RSC - Analyst latest articles

Improving the sensitivity of confocal laser induced fluorescence detection to sub-picomolar scale for round capillaries by laterally shifting laser focus point

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00345K, Paper

Yng Zhu, Nian-Nian Chen, Qi Li, Qun Fang
This paper describes a simple and efficient approach to reduce the background level of confocal laser induced fluorescence (LIF) detection for round capillaries by laterally shifting laser focus point. A...
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Diffuser-Incorporated Transmission NIR Measurement for Reliable Analysis of Packed Granular Samples

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00514C, Paper

Jihye Yoon, Jaejin Kim, Pham Khac Duy, Mooeung Kim, Sukwon Kang, Hoeil Chung
A diffuser-incorporated transmission near-infrared (NIR) scheme that enables direct spectral collection of packed granular samples with reliable sample representation and reproducibility has been demonstrated. The analytical utility of this method...
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Transport and accumulation of ferrocene tagged poly(vinyl chloride) at the buried interfaces of plasticized membrane electrodes

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00464C, Communication

Manzar Sohail, Roland De Marco, Muhammad Tanzirul Alam, Marcin Pawlak, Eric Bakker
Cyclic voltammetry (CV), synchrotron radiation-X-ray photoelectron spectroscopy (SR-XPS) and near edge X-ray absorption fine structure (NEXAFS) show that oxidation of ferrocene tagged PVC induces an accumulation of high molecular weight...
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Photoelectrochemical Lab-on-Paper Device Based on Molecularly Imprinted Polymer and Porous Au-paper Electrode

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00694H, Paper

Panpan Wang, Guoqiang Sun, Lei Ge, Shenguang Ge, Jinghua Yu, Mei Yan
In this work, microfluidic paper-based analytical device ([small mu ]-PAD) was applied in photoelectrochemical (PEC) method and thus a truly low-cost, simple, portable, and disposable microfluidic PEC origami device ([small mu ]-PECOD) was demonstrated....
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Label-free, high-throughput, electrical detection of cells in droplets

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00569K, Paper

Evelien Kemna, Loes Segerink, Floor Wolbers, Istvan Vermes, Albert van den Berg
Today, droplet based microfluidics has become a standard platform for high-throughput single cell experimentation and analysis. However, till now no label-free, integrated single cell detection and discrimination method in droplets...
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Electrochemiluminescent polymer film with suitable redox "turn-off" absorbance window for remote selective sensing of Hg2+

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00545C, Paper

Shu Qinghai, Catherine Adam, Neso Sojic, Michael Schmittel
A novel electrochemiluminescent sensing scheme is presented for remote detection of Hg2+ through ITO-coated nano-structured optical fibre bundle. It is based on the electropolymerisation of CPDT-linked ruthenium phenanthrolines complexes carrying...
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Single molecule kinetics of horseradish peroxidase exposed in large arrays of femtoliter-sized fused silica chambers

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00809F, Communication

Benno N. Ehrl, Raphaela B. Liebherr, Hans H. Gorris
Large arrays of femtoliter-sized chambers were etched into the surface of fused silica slides to enclose and observe hundreds of single horseradish peroxidase (HRP) molecules in parallel. Individual molecules of...
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A study of the conditions of measurement required to evaluate bias in analytical results illustrated by the use of data from a multi-round, blind-duplicated, proficiency test

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00130J, Paper

Gregory E O'Donnell, David Brynn Hibbert
Measurement uncertainty estimated under repeatability conditions in batch chemical analysis using calibrated instruments may be considered to be composed of contributions from two major effects: i) precision of the analysis...
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Ultra-high density protein spots achieved by on chip digitalized protein synthesis

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00976A, Paper

Soo Hyeon Kim, Satoko Yoshizawa, Shoji Takeuchi, Teruo Fujii, Dominique Fourmy
Current methodologies for arraying proteins using cell-free protein synthesis on a chip have spatial limitations that prevent reaching ultra-high density necessary for high throughput analysis. To circumvent this, we developed...
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A novel dark-field microscopy technique coupled with capillary electrophoresis for visual analysis of single nanoparticles

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00408B, Paper

Libo Li, Huan Yu, Dong Liu, Tianyan You
A system for interfacing dark field microscopy (DFM) with capillary electrophoresis (CE) was demonstrated and applied to investigate the movement of single gold nanoparticles (AuNPs) visually and in real time for the first time.
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Correlated Raman micro-spectroscopy and scanning electron microscopy analyses of flame retardants in environmental samples: a micro-analytical tool for probing chemical composition, origin and spatial distribution

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00501A, Paper

Sutapa Ghosal, Jeff Wagner
We present correlated application of two micro-analytical techniques: Raman micro-spectroscopy and SEM/EDS for the non-invasive characterization and molecular identification of flame retardants (FRs) in environmental samples.
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Radiation-induced grafting of carbon nanotubes on HPLC silica microspheres: theoretical and practical aspects

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00163F, Paper

Andrea Speltini, Daniele Merli, Daniele Dondi, Chiara Milanese, Pietro Galinetto, Carlo Bozzetti, Antonella Profumo
Carbon nanotubes immobilized on silica microspheres by [gamma]-radiation preserve their pristine characteristics; this material is suitable for selective chromatographic separations.
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Fluorescence quenching in luminescent porous silicon nanoparticles for the detection of intracellular Cu2+

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00503H, Communication

Bing Xia, Wenyi Zhang, Jisen Shi, Shoujun Xiao
A PSiNPs-based fluorescent assay with high specificity and sensitivity was designed for cellular imaging and biosensing of intracellular Cu²⁺.
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Ultra-rapid colorimetric assay for protease detection using magnetic nanoparticle-based biosensors

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36881E, Paper

Ghadeer A. R. Y. Suaifan, Chiheb Esseghaier, Andy Ng, Mohammed Zourob
A simple, instrument-free biosensor that can lead to low-cost point-of-care device for sensitive protease detection.
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A Rapid Electrochemical Biosensor Based on an AC Electrokinetics Enhanced Immuno-reaction

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00190C, Paper

I-Fang Cheng, Hsiao-Lan Yang, Cheng-Che Chung, Hsien-Chang Chang
Fluorescent labelling and chromogenic reactions commonly used in conventional immunoassays typically utilize diffusion dominated transports of analytes, which are limited by their slow reaction rates and long detection times. By...
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Selection of Representative Matrix for the Multiresidue Analysis of nine [small beta]-Agonists in Animal Tissues and Urine with LC-MS/MS

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN36806H, Paper

LiQi Wang, LiMin He, Zhong Wang, XuFeng Wang, JianHua Shu, JianWen Yang, GaoKui Zhang, ZhenLing Zeng
In the determination of nine [small beta]-agonists including salbutamol, terbutaline, cimaterol, fenoterol, clorprenaline, ractopamine, tulobuterol, clenbuterol and penbuterol in porcine, bovine, lamb and chicken muscle, liver and urine samples using LC-MS/MS,...
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Raman spectroscopy of serum: an exploratory study for detection of oral cancers

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00308F, Paper

Aditi Sahu, Sharada Sawant, Hitesh Mamgain, Murali Krishna Chilakapati
Early diagnosis of oral cancers, one of the major cancers, is of utmost importance as 5-year disease-free-survival rates are some of the lowest, despite advances in treatment and surgical modalities....
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In situ analysis of corrosion inhibitors using a portable mass spectrometer with paper spray ionization

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00249G, Paper

Fred. P. M. Jjunju, Anyin Li, Abraham Badu-Tawiah, Pu Wei, Linfan Li, Zheng Ouyang, Iman S. Roqan, R. Graham Cooks
Paper spray (PS) ambient ionization is implemented using a portable mass spectrometer and applied to the detection of alkyl quaternary ammonium salts in a complex oil matrix.
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Use of a large Stokes-shift fluorophore to increase the multiplexing capacity of a point-of-care DNA diagnostic device

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00593C, Communication

James A. Richardson, Trevor Morgan, Michael Andreou, Tom Brown
A simple and effective method for increased multiplexing has been developed for use in point of care DNA diagnostic applications.
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A new dimension for cell identification by FTIR spectroscopy: depth profiling in attenuated total reflection

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00193H, Paper

A. Gaigneaux, E. Goormaghtigh
Modulation of penetration depth in ATR improves cell type discrimination.
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A compact high resolution ion mobility spectrometer for fast trace gas analysis

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00231D, Paper

Ansgar T. Kirk, Maria Allers, Philipp Cochems, Jens Langejuergen, Stefan Zimmermann
Based on a refined theory of IMS operation, a 10 cm short drift tube ion mobility spectrometer with a resolution of 183 and detection limits in the low ppt_v-range has been designed.
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Introduction to analyzing the solidification of multifunctional acrylic esters by ESR

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36869F, Paper

Michael Schmitt
A kinetic in situ ESR-study of multifunctional resins is presented in combination with the computation of the trapped midchain radical.
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Reagent-free monitoring of multiple clinically relevant parameters in human blood plasma using a mid-infrared quantum cascade laser based sensor system

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00300K, Paper

Markus Brandstetter, Tamara Sumalowitsch, Andreas Genner, Andreas E. Posch, Christoph Herwig, Andreas Drolz, Valentin Fuhrmann, Thomas Perkmann, Bernhard Lendl
QCL based mid-infrared point-of-care sensor for reagent-free multianalyte detection in human blood plasma.
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Non-contact halogen lamp heating assisted LTP ionization miniature rectilinear ion trap: a platform for rapid on-site explosives analysis

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00555K, Paper

Wendong Chen, Keyong Hou, Xingchuang Xiong, You Jiang, Wuduo Zhao, Lei Hua, Ping Chen, Yuanyuan Xie, Zhenxin Wang, Haiyang Li
A platform consisting of a halogen lamp, a low temperature plasma (LTP) probe, and a miniature rectilinear ion trap mass spectrometer (RIT-MS) has been constructed and evaluated to detect the...
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A NOVEL LTCC ELECTROCHEMICAL CELL CONSTRUCTION AND CHARACTERIZATION: A DETECTION COMPARTMENT TO PORTABLE DEVICES

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00648D, Paper

Naira Canevarolo Pesquero, Mario Ricardo Gongora-Rubio, Hideko Yamanaka
In this work we described for the first time the construction of a 25 [small micro]L electrochemical cell from low temperature co-fired ceramic (LTCC) material and carbon screen-printed electrode applicable in...
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In-Situ Chemical Detection of Sub-micron Organic Aerosols using Direct Analysis in Real Time Mass Spectrometry (DART-MS): The Effect of Aerosol Size and Volatility

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00168G, Paper

Man Nin Chan, Theodora Nah, Kevin Roger Wilson
Direct Analysis in Real Time (DART) mass spectra are obtained from nanometer-sized organic particles introduced in between the ion source and inlet of an atmospheric pressure mass spectrometer. Model single...
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Quantification of Tumor Necrosis Factor-[small alpha] and Matrix Metalloproteinases-3 in Synovial Fluid by Fiber-Optic Particle Plasmon Resonance Sensor

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00276D, Paper

Yi Ching Huang, Chang-Yue Chiang, Cheng-Hen Li, Ting-Chou Chang, Chung-Sheng Chiang, Lai-Kwan Chau, Kuo-Wei Huang, Chin-Wei Wu, Shau-Chun Wang, Shaw-Ruey Lyu
The availability of techniques for sensitive detection of early stage osteoarthritis is critical for improving patient health. This study illustrates the feasibility of fiber-optic particle plasmon resonance (FOPPR) sensor with...
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Profiling intact steroid sulfates and unconjugated steroids in biological fluids by liquid chromatography-tandem mass spectrometry (LC-MS-MS)

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36817C, Paper

Christina E. Galuska, Michaela F. Hartmann, Alberto Sanchez-Guijo, Katharina Bakhaus, Joachim Geyer, Gerhard Schuler, Klaus-Peter Zimmer, Stefan A. Wudy
To elucidate the metabolism of steroid sulfates, a LC-MS-MS method for profiling 6 sulfated and 11 unconjugated steroids was developed.
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Chromatographic separation and detection of target analytes from complex samples using inkjet printed SERS substrates

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00673E, Paper

Wei W. Yu, Ian M. White
We demonstrate separation and detection of analytes from complex samples using the chromatographic properties of inkjet-printed surface enhance Raman spectroscopy (SERS) devices.
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A label-free amplified fluorescence DNA detection based on isothermal circular strand-displacement polymerization reaction and graphene oxide

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00421J, Communication

Zhen Li, Wenping Zhu, Jinwen Zhang, Jianhui Jiang, Guoli Shen, Ruqin Yu
A label-free fluorescent DNA biosensor was first developed based on isothermal circular strand-displacement polymerization reaction combined with graphene oxide binding.
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Solid phase extraction-capillary electrophoresis determination of sulphonamide residues in milk samples by use of C18-carbon nanotubes as hybrid sorbent materials

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00319A, Paper

M. L. Polo-Luque, B. M. Simonet, M. Valcarcel
The sorption capabilities of two CNT/C18 hybrid sorbent materials for preconcentrating sulphonamides from milk samples are evaluated.
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Magnetic particle-based time-resolved fluoroimmunoassay for the simultaneous determination of [small alpha]-fetoprotein and the free [small beta]-subunit of human chorionic gonadotropin

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00412K, Paper

Jing-Yuan Hou, Tian-Cai Liu, Zhi-Qi Ren, Mei-Jun Chen, Guan-Feng Lin, Ying-Song Wu
A novel fluoroimmunoassay for the simultaneous determination of [small alpha]-fetoprotein and the free [small beta]-subunit of human chorionic gonadotropin.
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Solution-free, in situ preparation of nano/micro CuO/ZnO in dielectric barrier discharge for sensitive cataluminescence sensing of acetic acid

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00407D, Paper

Hui Xia, Ronghui Zhou, Chengbin Zheng, Peng Wu, Yunfei Tian, Xiandeng Hou
A new solution-free strategy is used for preparation of cluster-like nano/micro CuO/ZnO particles in dielectric barrier discharge in which the brass acts as the inner electrode for sensing of acetic acid.
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Compositional sorting dynamics in coexisting lipid bilayer phases with variations in underlying e-beam formed curvature pattern

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00020F, Paper

Marjorie L. Longo, Maria O. Ogunyankin
Nanometer-scale curvature patterns of an underlying substrate are imposed on lipid multibilayers with each pattern imparting distinctly different sorting dynamics to a metastable pixilation pattern of coexisting liquid ordered (Lo)...
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Employing aqueous CdTe quantum dots with diversified surface functionalities to discriminate between heme (Fe(II)) and hemin (Fe(III))

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00310H, Paper

Jishu Han, Ziwei Zhou, Xinyuan Bu, Shoujun Zhu, Hao Zhang, Haizhu Sun, Bai Yang
Heme and hemin are discriminated between on the basis of the fluorescence quenching of aqueous CdTe QDs with diversified surface functionalities that greatly influence their electrostatic interaction in aqueous media.
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Potentiometric sensors using cotton yarns, carbon nanotubes and polymeric membranes

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00710C, Paper

Tomas Guinovart, Marc Parrilla, Gaston Adrian Crespo, F. Xavier Rius, Francisco Andrade
A simple and generalized approach to build electrochemical sensors for wearable devices is presented. Commercial cotton yarns are first turned into electrical conductors through a simple dyeing process using a...
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Cerium oxide-triggered 'one-to-many' catalytic cycling strategy for in situ amplified electronic signal of low-abundance protein

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00706E, Paper

Juan Tang, Xian Chen, Jun Zhou, Qunfang Li, Guonan Chen, Dianping Tang
Multifunctionalized thionine modified cerium oxide (Thi-CeO2) nanostructures with redox ability and catalytic activity were designed as the bionanolabels for in situ amplified electronic signal of low-abundance protein (carcinoembryonic antigen, CEA,...
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Alternative SERRS probes for the immunochemical localization of ovalbumin in paintings: an advanced mapping detection approach

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00057E, Paper

Giorgia Sciutto, Lucio Litti, Cristiana Lofrumento, Silvia Prati, Marilena Ricci, Marina Gobbo, Aldo Roda, Emilio Castellucci, Moreno Meneghetti, Rocco Mazzeo
In the field of analytical chemistry, many scientific efforts have been devoted to develop experimental procedures for the characterization of organic substances present in heterogeneous artworks samples, due to their...
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Nanoparticle Embedded Enzymes for Improved Lateral Flow Sensors

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00733B, Communication

Veli Cengiz Ozalp, Ugur Siyami Zeydanli, Anita Lunding, Murat Kavruk, Tufan M. Oz, Fusun Eyidogan, Lars Folke Olsen, Huseyin Avni Oktem
In this study, combining the nanoparticle embedding sensors with lateral flow assay, a novel strategy for ensuring the quality of signalling in lateral flow assays (LFA) was developed. LFA for...
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Ag-decorated TiO2 nanograss for 3D SERS-active substrate with visible light self-cleaning and reactivation

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00750B, Paper

S. C. Xu, Guanghai Li, Yunxia Zhang, Yuanyuan Luo, J. M. Xu, Shuan Wang, Hualin Ding
The production of SERS-active substrate with uniform, sensitivity, reproducibility and durability still remains an important issue. Here, we report a fabricating strategy for large-area Ag-decorated TiO2 nanograss SERS-active substrate by...
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Fluorescent sensing of mercury(II) based on formation of catalytic gold nanoparticles

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00725A, Communication

Lixia Yan, Zhaopeng Chen, Zhiyang Zhang, Chengli Qu, Lingxin Chen, Dazhong Shen
A fluorescence assay for the highly sensitive and selective detection of Hg2+ using a gold nanoparticle (AuNP)-based probe was proposed. The assay was based on the formation of Hg-Au alloys...
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Theoretical and experimental studies on isotachophoresis in multi-moving chelation boundary system formed with metal ions and EDTA

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00643C, Paper

Wei Zhang, Chen-Gang Guo, Liuyin Fan, Chengxi Cao
In this paper, a general mode and theory of moving chelation boundary based isotachophoresis (MCB-based ITP), together with the concept of decisive metal ion (DMI) having the maximum complexation constant...
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A microfluidic anti-Factor Xa assay device for point of care monitoring of anticoagulation therapy

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00401E, Paper

Leanne F. Harris, Paul Rainey, Vanessa Castro-Lopez, James S. O'Donnell, Anthony J. Killard
Here we present a novel fluorescence-based anti-Factor Xa microfluidic assay device for point of care monitoring of the effect of anticoagulant therapy.
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A novel platform for sensing an amino acid by integrating hydrogel photonic crystals with ternary complexes

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00253E, Communication

Mei Liu, Li-Ping Yu
A novel sensing platform based on the integration of hydrogel photonic crystals and ternary tetracycline-copper(II)-amino acid complexes.
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A novel differential mobility analyzer as a VOC detector and multivariate techniques for identification and quantification

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00078H, Paper

V. Pomareda, S. Lopez-Vidal, D. Calvo, A. Pardo, S. Marco
A Differential Mobility Analyser (DMA) is a specific configuration of an Ion Mobility Spectrometer (IMS) where ions with different electrical mobilities are separated in space, instead of in time of drift, as in classical drift-time IMS.
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An automated method for baseline correction, peak finding and peak grouping in chromatographic data

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36276K, Paper

Lea G. Johnsen, Thomas Skov, Ulf Houlberg, Rasmus Bro
An automated method (FastChrom) for baseline correction, peak detection and assignment (grouping) of similar peaks across samples has been developed. The method includes a new method for baseline estimation.
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Mepanipyrim haptens and antibodies with nanomolar affinity

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00228D, Communication

Francesc A. Esteve-Turrillas, Josep V. Mercader, Consuelo Agullo, Antonio Abad-Somovilla, Antonio Abad-Fuentes
Hapten synthesis and antibody production for immunodetection of the anilinopyrimidine fungicide mepanipyrim are reported for the first time.
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An improved lectin-based method for the detection of mucin-type O-glycans in biological samples

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36258B, Paper

Cheng-Siang Lee, Arivalagan Muthusamy, Puteri Shafinaz Abdul-Rahman, Veer P. Bhavanandan, Onn Haji Hashim
Mucin type O-glycans were specifically captured by champedak galactose binding lectin, which was then probed using biotinylated jacalin. Our newly developed method improves the detection sensitivity for the O-glycans in biological samples such as serum.
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Development of a label-free aptasensor for monitoring the self-association of lysozyme

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00229B, Paper

Alina Vasilescu, Szilveszter Gaspar, Iuliana Mihai, Andreia Tache, Simona Carmen Litescu
A novel aptamer and SPR-based sensor was applied for monitoring the early stages of lysozyme aggregation.
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Electrochemical signature of mismatch in overhang DNA films: a scanning electrochemical microscopic study

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36810F, Paper

Mohtashim Hassan Shamsi, Heinz-Bernhard Kraatz
High throughput DNA basepair mismatch detection is an ultimate goal for earlier and point-of-care diagnostics.
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A miniaturised electron ionisation time-of-flight mass spectrometer that uses a unique helium ion removal pulsing technique specifically for gas analysis

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00217A, Paper

Jiang Qing, Zhengxu Huang, Yan Zhang, Hui Zhu, Guobin Tan, Wei Gao, Peng-yuan Yang
A pulsing device for the removal of helium ions is designed and coupled to a miniaturised electron ionisation time-of-flight mass spectrometer for gas analysis.
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Selective sensing of vapors of similar dielectric constants using peptide-capped gold nanoparticles on individual multivariable transducers

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00088E, Paper

Nandini Nagraj, Joseph M. Slocik, David M. Phillips, Nancy Kelley-Loughnane, Rajesh R. Naik, Radislav A. Potyrailo
Peptide-capped gold nanoparticles were applied onto a multivariable inductor-resistor-capacitor resonator and resolved model toxic vapors with similar dielectric constants.
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Determination of free acidic and alkaline residues of protein via moving reaction boundary titration in microdevice electrophoresis

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36494A, Paper

Hou-yu Wang, Si Li, Yun-yun Tang, Jing-yu Dong, Liu-yin Fan, Cheng-xi Cao
Rapid and direct determination of acidic and alkaline residues of protein via moving reaction boundary electrophoretic titration is reported.
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An in situ electrochemical detection method of cell viability

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00379E, Communication

Hongwei Qin, Qingdong Gao, Huiming Niu, Zhefeng Wang, Xiaolin Zhu, Jinlian Li, Xing Yuan, Dongmei Wu
A novel and simple in situ electrochemical detection method of cell viability was developed.
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A tyrosinase biosensor based on ordered mesoporous carbon-Au/L-lysine/Au nanoparticles for simultaneous determination of hydroquinone and catechol

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36928E, Paper

Lin Tang, Yaoyu Zhou, Guangming Zeng, Zhen Li, Yuanyuan Liu, Yi Zhang, Guiqiu Chen, Guide Yang, Xiaoxia Lei, Mengshi Wu
A tyrosinase biosensor based on nano-porous-structured carbon-Au was applied in the simultaneous determination of dihydroxybenzene isomers.
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Metal-organic frameworks-based biosensor for sequence-specific recognition of double-stranded DNA

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00426K, Paper

Lifen Chen, Hanye Zheng, Xi Zhu, Zhenyu Lin, Longhua Guo, Bin Qiu, Guonan Chen, Zhong-Ning Chen
A fluorescence sensor is developed for sequence-specific recognition of duplex DNA in vitro using a metal-organic framework as the sensing platform.
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Advanced oxidation using Fe3O4 magnetic nanoparticles and its application in mercury speciation analysis by high performance liquid chromatography-cold vapor generation atomic fluorescence spectrometry

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00010A, Paper

Xi Ai, Yu Wang, Xiandeng Hou, Lu Yang, Chengbin Zheng, Li Wu
A novel post-column oxidation method using Fe₃O₄ magnetic nanoparticles was developed for the speciation analysis of mercury.
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Noninvasive analysis of hormonal variations and effect of postmenopausal vagifem treatment on women using in vivo high wavenumber confocal Raman spectroscopy

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00526G, Paper

Zhiwei Huang
This study aims to evaluate the feasibility of applying high wavenumber (HW) confocal Raman spectroscopy for noninvasive assessment of menopause-related hormonal changes in the cervix as well as for determining...
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Fluorescent optical fiber sensors for cell viability monitoring

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00248A, Paper

Ilia Sergachev, Alexander Rusanov, Evgeny Trushkin, Dmitry Sakharov, Uwe Marx, Alexander Tonevitsky
A new simple method for non-invasive cell culture viability monitoring based on vital fluorescent stains is introduced, and its efficiency for long-term experiments on cells is demonstrated.
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A disposable electrochemical immunosensor for the determination of leptin in serum and breast milk

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00183K, Paper

Irene Ojeda, Maria Moreno-Guzman, Araceli Gonzalez-Cortes, Paloma Yanez-Sedeno, Jose M. Pingarron
The preparation of a disposable electrochemical immunosensor for the quantification of the hormone leptin is described in this work.
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A new fluorescence "switch on" assay for heparin detection by using a functional ruthenium polypyridyl complex

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00242J, Paper

Ting-Ting Cheng, Jun-Liang Yao, Xing Gao, Wenliang Sun, Shuo Shi, Tian-Ming Yao
A new fluorescence "switch on" sensor for heparin detection is presented based on a functional ruthenium polypyridyl complex ([Ru(phen)₂dppz-idzo]²⁺).
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Determination of cell cycle phases in live B16 melanoma cells using IRMS

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00318C, Paper

Diana E. Bedolla, Sasa Kenig, Elisa Mitri, Paolo Ferraris, Alessandro Marcello, Gianluca Grenci, Lisa Vaccari
New silicon modified BaF₂ microfluidic devices were used for the assessment of cell cycle stages of live B16 melanoma cells by using label-free IRMS. Spectroscopic results were cross-checked with flow cytometry data showing a good agreement between these techniques.
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Solid-state voltammetry-based electrochemical immunosensor for Escherichia coli using graphene oxide-Ag nanoparticle composites as labels

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00056G, Paper

Xiaochun Jiang, Kun Chen, Jing Wang, Kang Shao, Tao Fu, Feng Shao, Donglian Lu, Jiangong Liang, M. Frahat Foda, Heyou Han
A new electrochemical immunosensor for Escherichia coli was fabricated based on solid-state voltammetry by using graphene oxide-Ag nanoparticle nanocomposites (P-GO-Ag) as labels.
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Advances in nano-scaled biosensors for biomedical applications

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00438D, Minireview

Jianling Wang, Guihua Chen, Hui Jiang, Zhiyong Li, Xuemei Wang
Recently, a growing number of attentions have been attracted to the utility of biosensors for biomedical application. Combined with nanomaterials and nanostructures, nano-scaled biosensors are installed for biomedical applications, such...
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On-Chip Laser-Induced DNA Dehybridization

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00288H, Paper

Elizabeth Wheeler, Brian Robert Baker, William Thomas Piggott, Shalini L Mabery, Christine Hara, Joshua DeOtte, William Benett, Erik V Mukerjee, John M Dzenitis, Neil Reginald Beer
Detection of pathogens and relevant genetic markers using their nucleic acid signatures is extremely common due to the inherent specificity genomic sequences provide. One approach for assaying a sample simultaneously...
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Nicked-sleeve interface for two-dimensional capillary electrophoresis

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00284E, Communication

Norman Dovichi, Ryan J Flaherty, Bonnie Jaskowski - Huge, Spencer M Bruce, Oluwatosin Dada
We report an improved interface for two-dimensional capillary electrophoresis. This interface is based on capillary tubing and a Plexiglas chip, both of which were milled using a micro-dicing saw. The...
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Design and validation of a multi-electrode bioimpedance system for enhancing spatial resolution of cellular impedance studies

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00176H, Paper

Frank Anthony Alexander, Michael Celestin, Dorielle Tucker Price, Meera Nanjundan, Shekhar Bhansali
This paper reports the design and evaluation of a multi-electrode design that improves upon the statistical significance and spatial resolution of cellular impedance data measured using commercial electric cell-substrate impedance...
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Potential of capillary electrophoresis with wavelength-resolved fluorescence detection for protein unfolding studies using [small beta]-lactoglobulin B as test compound

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00357D, Paper

Bregje Johanna De Kort, Gerhardus J de Jong, Govert W Somsen
Capillary electrophoresis (CE) with wavelength-resolved fluorescence detection (wrFlu) was evaluated for the study of protein unfolding using non-reduced and reduced [small beta]-lactoglobulin B ([small beta]-LGB) as model compounds. Protein unfolding was achieved...
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A rhodamine based "turn-on" chemodosimeter for monitoring gold ions in synthetic samples and living cells

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00024A, Communication

Mustafa Emrullahoglu, Erman Karakus, Muhammed Ucuncu
A rhodamine based fluorescent probe, functionalized with an alkyne moiety, shows highly selective recognition towards Au(I) and Au(III) ions over other metal ions. Probe 1 is successfully employed for the...
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Spectral Histopathology of colon cancer tissue sections by Raman imaging with 532 nm excitation provides label free annotation of lymphocytes, erythrocytes and proliferating nuclei of cancer cells

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00370A, Paper

Laven Mavarani, Dennis Petersen, Samir F El-Mashtoly, Axel Mosig, Andrea Tannapfel, Carsten Kotting, Klaus Gerwert
Spectral Histopathology (SHP) is an emerging tool for label free annotation of tissue. While FTIR based SHP provides fast annotation of larger tissue sections, Raman based SHP is slower but...
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Porous Silicon as an ideal optofluidics material for biosensing: Emphasis on microfabrication and monitoring cells in vivo and in vitro

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00081H, Critical Review

Bakul Gupta, Ying Zhu, Bin Guan, Peter Reece, John Justin Gooding
Porous silicon photonics is the ideal platform for high sensitivity, high selectivity monitoring of biological molecules in a complex fluidic environment. The potential of this technology was identified almost 15...
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FTIR spectroscopy of biofluids revisited: An automated approach to spectral biomarker identification

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00337J, Paper

Julian Ollesch, Steffen Lorenz Drees, Herbert Michael Heise, Thomas Behrens, Thomas Bruning, Klaus Gerwert
The extraction of disease specific information from Fourier transform infrared (FTIR) spectra of human body fluids demands highest standards of accuracy and reproducibility of measurements, because the expected spectral differences...
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Optical fibre probe NIR Raman measurements in ambient light and in combination with a tactile resonance sensor for possible cancer detection

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00243H, Paper

Morgan Nyberg, Kerstin Ramser, Olof A Lindahl
First measurements on a combined instrument with a thin fibre optic Raman probe mounted inside a hollow tactile resonance sensor have been performed in ambient light on porcine tissue. The...
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Total viable bacteria count using a real time all-fibre spectroscopic system.

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00254C, Paper

Evgeny Bogomolny, Simon Swift, Frederique Vanholsbeeck
Rapid, accurate and sensitive enumeration of bacterial populations in natural environment is an essential task for many research fields. Widely used standard methods for counting bacteria such as a heterotrophic...
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Effects of atmospheric relative humidity on Stratum Corneum structure at the molecular level: ex vivo Raman spectroscopy analysis

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00716B, Paper

Raoul Vyumvuhore, Ali Tfayli, Helene Duplan, Alexandre Delalleau, M Manfait, Arlette Baillet-Guffroy
Skin hydration plays an important role in the optimal physical properties and physiological function of the skin. Despite the advancements in the last decade, dry skin remains the most common...
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Beyond the ridge pattern: multi-informative analysis of latent fingermarks by MALDI mass spectrometry

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36896C, Minireview

S. Francese, R. Bradshaw, L. S. Ferguson, R. Wolstenholme, M. R. Clench, S. Bleay
MALDI MSI is being developed for integration into the current fingermark examination workflow.
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Change in the microenvironment of breast cancer studied by FTIR imaging

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00241A, Paper

S. Kumar, C. Desmedt, D. Larsimont, C. Sotiriou, E. Goormaghtigh
Depletion of a collagen component near the tumor (in red). Intensity of the second derivative of the scaled spectra at 1632 cm^-1.
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The road to medical vibrational spectroscopy - a history

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN90035E, Editorial

Henry H. Mantsch
The present Editorial chronicles the journey from classical infrared and Raman spectroscopy to medical vibrational spectroscopy, as experienced by a contemporary witness of the times.
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Aptamer based electrochemical biosensor for tumor necrosis factor-alpha detection in whole blood

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00818E, Paper

Ying Liu, Qing Zhou, Alexander Revzin
Electrochemical aptasensors can detect disease markers such as cytokines to provide point-of-care diagnosis that is low-cost, rapid, specific and sensitive. Herein, we describe the development of an aptamer-based electrochemical sensor...
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Fast detection of atrazine in corn using thermometric biosensors

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00490B, Paper

Zhiwei Qie, Baoan Ning, Ming Liu, Jialei Bai, Yuan Peng, Nan Song, Zhiqiang Lv, Ying Wang, Siming Sun, Xuan Su, Yihong Zhang, Zhixian Gao
Fast detection is important in screening large-scale samples. This study establishes a direct competitive ELISA method (dcTELISA) based on an enzyme thermistor1 for fast atrazine (ATZ) detection. ATZ competes with...
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High performance optical sensing nanocomposites for low and ultra-low oxygen concentrations using phase-shift measurements

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00239J, Paper

Santiago Medina-Rodriguez, Marta Marin-Suarez, Jorge F Fernandez-Sanchez, Angel de la Torre-Vega, Etienne David Baranoff, Alberto Fernandez-Gutierrez
The accurate and real-time measurement of low and ultra-low concentration of oxygen using non-invasive methods is a necessity for a multitude of applications, from brewing beer to developing encapsulating barriers...
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Peroxynitrite activity of hemin-functionalized reduced graphene oxide

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00678F, Paper

Raluca Oprea, Seban Peteu, Palaniappan Subramanian, Qi Wang, Emmanuelle Pichonat, Henri Happy, Mekki Bayachou, Rabah Boukherroub, Sabine Szunerits
Conducting interfaces modified with reduced graphene oxide (rGO) have shown improved electrochemical response for several different analytes. The efficient formation of functionalized rGO based materials are thus of current interest...
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A Novel Tantalum-based Sol-gel Packed Microextraction Syringe for Highly Specific Enrichment of Phosphopeptides in MALDI-MS Applications

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00021D, Paper

Omur Celikb[i without dot]cak, Mehmet Atakay, Ulku Guler, Bekir Salih
A new tantalum-based sol-gel material was synthesized using a unique sol-gel synthesis pathway by PEG incorporation into the sol-gel structure without performing a calcination step. This improved its chemical and...
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Sensitivity of activatable reactive oxygen species probes by fluorescence spectroelectrochemistry

Analyst, 2013, Accepted Manuscript
DOI: 10.1039/C3AN00459G, Paper

Steven Wang, Natalia G Zhegalova, Tiffany Gustafson, Andrew Zhou, Joel Sher, Samuel Achilefu, Oleg Y Berezin, Mikhail Berezin
We have developed a new method of evaluating activatable fluorescent probes for ROS detection using integrated fluorescence spectroelectrochemistry. Tafel formalism was applied to describe the process of the probes' oxidation...
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Nanocapsule-based probe for evaluating the orientation of antibodies immobilized on a solid phase

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00481C, Paper

Masumi Iijima, Nobuo Yoshimoto, Tomoaki Niimi, Andres Daniel Maturana, Shun'ichi Kuroda
Bio-nanocapsules displaying IgG Fc-binding Z domains (ZZ-BNC) can discriminate the IgGs fixed in an oriented- and randomized-immobilization manner.
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Gold-nanopatterned single interleukin-6 sandwich immunoassay chips with zeptomolar detection capability based on evanescent field-enhanced fluorescence imaging

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN36914E, Paper

Seungah Lee, Seong Ho Kang
A novel single IL-6 sandwich immunoassay chip with 100 nm Au spots based on an ultra-sensitive TIRFM system.
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A near-infrared and ratiometric fluorescent chemosensor for palladium

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00616F, Paper

Junyu Wang, Fengling Song, Jingyun Wang, Xiaojun Peng
A NIR chemosensor for palladium based on the Tsuji-Trost reaction was developed and its bioimaging potential demonstrated by in vitro and in vivo experiments.
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Ultrasensitive electrochemiluminescence detection of lengthy DNA molecules based on dual signal amplification

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00452J, Paper

Fang Liu, Heng Liu, Meng Zhang, Jinghua Yu, Shaowei Wang, Juanjuan Lu
Ultrasensitive detection of overlong DNA molecules based on Au@CNT-GS platform and CdTe-Zno signal amplification.
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A colorimetric method for H1N1 DNA detection using rolling circle amplification

Analyst, 2013, Advance Article
DOI: 10.1039/C3AN00100H, Paper

Yasi Xing, Ping Wang, Yucui Zang, Yuqing Ge, Qinghui Jin, Jianlong Zhao, Xia Xu, Guoqiang Zhao, Hongju Mao
This study established a highly sensitive colorimetry-based rolling circle amplification assay for H1N1 DNA detection.
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Isotachophoresis with ionic spacer and two-stage separation for high sensitivity DNA hybridization assay

Analyst, 2013, 138,3117-3120
DOI: 10.1039/C3AN00374D, Communication

Charbel Eid, Giancarlo Garcia-Schwarz, Juan G. Santiago
We present a rapid and high sensitivity assay that uses on-chip isotachophoresis to enhance DNA hybridization and an ionic spacer to separate reaction products.
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Integration of microsphere resonators with bioassay fluidics for whispering gallery mode imaging

Analyst, 2013, 138,3189-3195
DOI: 10.1039/C3AN00328K, Paper

Daniel C. Kim, Kevin P. Armendariz, Robert C. Dunn
The immobilization of microsphere whispering gallery mode resonators without degradation in optical performance is demonstrated and shown to be compatible with assay fluidics through the sensitive, label-free detection of cholera toxin.
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Fabrication of CdTe@SiO2 nanoprobes for sensitive electrogenerated chemiluminescence detection of DNA damage

Analyst, 2013, 138,3253-3258
DOI: 10.1039/C3AN00264K, Paper

Wei Wei, Jie Zhou, Henan Li, Lihong Yin, Yuepu Pu, Songqin Liu
An electrogenerated chemiluminescence biosensor was fabricated to detect specific sequences of DNA by using CdTe@SiO₂ as nanoprobes.
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Capillary zone electrophoresis-multiple reaction monitoring from 100 pg of RAW 264.7 cell lysate digest

Analyst, 2013, 138,3181-3188
DOI: 10.1039/C3AN00287J, Paper

Liangliang Sun, Yihan Li, Matthew M. Champion, Guijie Zhu, Roza Wojcik, Norman J. Dovichi
Capillary zone electrophoresis-multiple/single reaction monitoring (CZE-MRM/SRM), which employed an electrokinetically driven sheath-flow electrospray interface, was used for the rapid and highly sensitive detection of protein analytes in complex tryptic digests.
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Development of a chemiluminescence enzyme-linked immunosorbent assay for the simultaneous detection of imidaclothiz and thiacloprid in agricultural samples

Analyst, 2013, 138,3280-3286
DOI: 10.1039/C3AN00205E, Paper

Zhen-jiang Liu, Xu Yan, Xiu-ying Xu, Ming-hua Wang
A novel and sensitive enhanced chemiluminescence enzyme-linked immunosorbent assay (ECL-ELISA) for the simultaneous analysis of imidaclothiz and thiacloprid is described.
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Sonophoric nanoprobe aided pH measurement in vivo using photoacoustic spectroscopy

Analyst, 2013, 138,3126-3130
DOI: 10.1039/C3AN00093A, Communication

Aniruddha Ray, Hyung Ki Yoon, Yong Eun Koo Lee, Raoul Kopelman, Xueding Wang
Presented here is a novel nanoprobe based photoacoustic spectroscopy method enabling in vivo pH sensing.
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A polymeric waveguide resonant mirror (RM) device for detection in microfluidic flow cells

Analyst, 2013, 138,3209-3215
DOI: 10.1039/C3AN00263B, Paper

Ruchi Gupta, Nick J. Goddard
A novel resonant mirror (RM) device, which consisted of silica sol-gel spacer and polystyrene waveguide layers on a standard microscope slide glass substrate, was developed in this work.
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Highly sensitive detection of superoxide dismutase based on an immunoassay with surface-enhanced fluorescence

Analyst, 2013, 138,3246-3252
DOI: 10.1039/C3AN00471F, Paper

Xiaoming Yang, Yao Dou, Shanshan Zhu
A succesful effort towards the development of highly sensitive quantification of SOD depending on surface-enhanced fluorescence (SEF) on silver nanoparticles and immuno-magnetic separation.
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Nanotips for single-step preparation of DNA for qPCR analysis

Analyst, 2013, 138,3135-3138
DOI: 10.1039/C3AN00170A, Communication

Dinesh Kalyanasundaram, Jong-Hoon Kim, Gareth Fotouhi, Hyun-Boo Lee, Morgan Hiraiwa, Kieseok Oh, Kyong-Hoon Lee, Jae-Hyun Chung
A single-step preparation method of genomic DNA from human samples is demonstrated using a nanotip.
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Novel fluorescent probe for highly sensitive bioassay using sequential enzyme-linked immunosorbent assay-capillary isoelectric focusing (ELISA-cIEF)

Analyst, 2013, 138,3139-3141
DOI: 10.1039/C3AN00098B, Communication

Terence G. Henares, Yuta Uenoyama, Yuto Nogawa, Ken Ikegami, Daniel Citterio, Koji Suzuki, Shun-ichi Funano, Kenji Sueyoshi, Tatsuro Endo, Hideaki Hisamoto
Sensitivity improvement was achieved by developing a novel substrate producing a fluorescent ampholyte.
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Simple and rapid detection of L-Dopa decarboxylase activity using gold nanoparticles

Analyst, 2013, 138,3146-3149
DOI: 10.1039/C3AN00009E, Communication

So Young Park, Dohyoung Kwon, Hyejung Mok, Bong Hyun Chung
We developed a new detection method for L-Dopa decarboxylase (DDC) activity using gold nanoparticles (AuNPs).
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