Analytical Chemistry News

Detection of herbicide glyphosates based on anti-aggregation mechanism by using unmodified gold nanoparticles in presence of Pb2+

RSC - Anal. Methods latest articles - Mon, 04/17/2017 - 06:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00426E, PaperZhuangwei Zhou, Yujie Zhang, Jingyan Kang, Chen Dong, Ningyi Chen, Xing Li, Zhiyong Guo, Aiguo Wu
In this study, a new detection method for glyphosate (GPS) based on anti-aggregation mechanism by using gold nanoparticles (AuNPs) is proposed. A certain amount of Pb2+ can cause the aggregation...
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Two Orders of Magnitude Electrokinetic Stacking of Protein in One Minute on a Simple Paper Fluidic Channel

RSC - Anal. Methods latest articles - Mon, 04/17/2017 - 05:38
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00582B, PaperBiao Ma, Songfang Xie, Lei Liu, Fang Fang, Zhi-Yong Wu
A crucial challenge in development of robust paper-based analytical devices (PADs) is the lack of sensitivity. Electrokinetic stacking is a kind of unique sample preconcentration for low abundant charged species,...
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Sensitive and rapid assay of BNP in patient blood by micro-ELISA

RSC - Anal. Methods latest articles - Mon, 04/17/2017 - 05:38
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00479F, PaperEmi Mori, Toshinori Ohashi, Yasushi Imai, Kazuma Mawatari, Takehiko Kitamori
Microfluidic immunoassay is expected to be a next-generation diagnostic method due to the small size and high performance. Various tests will be performed in clinics or for home medical care....
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A Simplified Approach in Flow Controlled Multi-dimensional Gas Chromatography

RSC - Anal. Methods latest articles - Mon, 04/17/2017 - 04:38
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00433H, PaperJim Luong, Ronda Gras, Robert A. Shellie
We introduce a simple and reliable approach for practicing flow controlled multi-dimensional gas chromatography. The approach eliminates the need for flow resistance balancing. Flow resistance balancing between the flow restrictor...
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Recent progress in application of nanomaterials in analysis of emerging chemical contaminants

RSC - Anal. Methods latest articles - Thu, 04/13/2017 - 10:07
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00859G, Critical ReviewXiu Huang, Qian Liu, Shouzhuo Yao, Guibin Jiang
Emerging chemical contaminants (ECCs) represent newly identified chemical contaminants which have not been covered by routine monitoring and regulatory programs. Current research into ECCs is greatly hindered by the shortage...
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A red fluorescent turn-on chemosensor for Al3+ based on dimethoxy triphenylamine-benzothiadiazole derivative with aggregation-induced emission

RSC - Anal. Methods latest articles - Thu, 04/13/2017 - 06:07
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00145B, PaperJianli Hua, Niannian Lu, Tao Jiang, Haoqi Tan, Yandi Hang, Ji Yang, Jian Wang, Xue Qu
Aluminum is a known neurotoxin to organisms and believed to cause Alzheimer's disease, osteomalacia and breast cancer. Effective tools for Al3+ recognition are thus in great demand. In this paper,...
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A highly sensitive and label-free electrochemiluminescence immunosensor for beta 2-microglobulin

RSC - Anal. Methods latest articles - Thu, 04/13/2017 - 05:07
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00263G, PaperMohammad Rizwan, Noor Faizah Mohd-Naim, Natasha Ann Keasberry, Minhaz Uddin Ahmed
A highly sensitive and label-free electrochemiluminescence (ECL) immunosensor was fabricated for the detection of [small beta]-2-Microglobulin ([small beta]2M) based on gold nanoparticles-doped@carbon nano-onions chitosan nanocomposite modified cadmium selenide quantum dots screen-printed electrode...
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Comparison of different GC-MS configurations for the determination of prevalent drugs and related metabolites.

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 14:00
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00813A, PaperJorge Saiz, Carmen Garcia Ruiz, Belen Gomara
Cocaine, cannabis, heroin, and other opioids are among the prevalent drugs in Europe. The use of these drugs is demonstrated by the determination of either parent drugs or related metabolites...
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Optimization of a methodology for simultaneous determination of twelve chlorophenols in environmental water samples using in situ derivatization and continuous sample drop flow microextraction combined with gas chromatography-electron-capture detection

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 13:00
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00530J, PaperMostafa Karimaei, Kiomars Sharafi, Masoud Moradi, Hamid Reza Ghaffari, Hamed Biglari, Hossein Arfaeinia, Nazir Fattahi
The continuous sample drop flow microextraction (CSDFME) joined with the gas chromatography-electron-capture detection (GC-ECD) has been developed as a high preconcentration technique for the determination of chlorophenols (CPs) in environmental...
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Variable selection with support vector machine for discriminating Cryptococcus fungus species based on ATR-FTIR spectroscopy

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 13:00
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00428A, PaperCamilo Lelis, Fernanda SL Costa, K. M. G. de Lima
Variable selection with supervised classification is currently an important tool for discriminating biological samples. In this paper, fifteen supervised classification algorithms based on support vector machine (SVM) were applied to...
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A Label-Free Aptasensor for Highly Sensitive ATP Detection by Using Exonuclease I and Oligonucleotide-templated Fluorescent Copper Nanoparticles

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 13:00
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00424A, PaperQiyong Cai, Jia Ge, Huihui Xu, Lin Zhang, Ya-Lei Hu, Zhongming Huang, Zhaohui Li
In this work, we developed a simple and highly sensitive fluorescence method for the determination of ATP based on a designed multifunctional oligonucleotide, which holds the ability of synthesizing fluorescent...
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A simple and fast method based on functionalized magnetic nanoparticles for determination of Ag(I), Au(III) and Pd(II) in mine stone, road dust and water samples

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 11:59
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00596B, Paperhomeira ebrahimzadeh, Ali Akbar Asgharinezhad, sara karami
Herein, murexide functionalized magnetic nanoparticles as an efficient sorbent in combination with flame atomic absorption spectrometry was employed for rapid extractive preconcentration and determination of trace amounts of silver, gold...
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Methods for preparing DNA-functionalized gold nanoparticles, a key reagent of bioanalytical chemistry

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 08:58
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00368D, Tutorial ReviewBiwu Liu, Juewen Liu
Gold nanoparticles (AuNPs) have excellent optical properties such as high extinction coefficients, distance-dependent color, and strong fluorescence quenching and localized surface plasmon resonance. At the same time, DNA has both...
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X-ray fluorescence (XRF) analysis of porcelain: Background paper

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 06:57

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90044A, AMC Technical Brief Analytical Methods Committee AMCTB No. 77
X-ray fluorescence is used for a wide variety of purposes in the examination of heritage objects made from porcelain.
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Correction: Self-supported Co3O4 nanoneedle arrays decorated with PPy via chemical vapor phase polymerization for high-performance detection of trace Pb2+

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 06:57
Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90045G, Correction Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Wenjing Wang, Chao Wang, Peng Dou, Lifang Zhang, Jiao Zheng, Zhenzhen Cao, Xinhua Xu
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SPRI biosensors for quantitative determination of matrix metalloproteinase-2

RSC - Anal. Methods latest articles - Wed, 04/12/2017 - 05:57

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00786H, PaperAnna Tokarzewicz, Lech Romanowicz, Iosif Sveklo, Ewa Matuszczak, Adam Hermanowicz, Ewa Gorodkiewicz
The aim of this study was to develop a new, label-free, highly selective Surface Plasmon Resonance Imaging biosensor for the quantitative determination of matrix metalloproteinase-2.
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Relationship between perfusion index and precision of noninvasive blood component measurement based on dynamic spectroscopy

RSC - Anal. Methods latest articles - Tue, 04/11/2017 - 08:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00350A, PaperXimeng Feng, Haixia Yu, Xiaoqing Yi, Shaohui Wang, Gang Li, Ling Lin
Noninvasive blood component measurement is a relevant topic in biomedical engineering. Noninvasive blood component measurement based on dynamic spectroscopy can effectively avoid the influence of individual differences and improve its...
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Templated Electrodeposition of Vertically Aligned Copper Oxide Nanowire Arrays on 3D Ni Foam Substrates for Determination of Glucosamine in Pharmaceutical Caplet Samples

RSC - Anal. Methods latest articles - Tue, 04/11/2017 - 05:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00799J, PaperM. A. Kamyabi, N. Hajari
Copper oxide nanowires network electrode has been fabricated through electrodeposition procedure using mesoporous silica film as templates on Ni foam. The metal oxide nanostructures on Ni foam as a three...
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Simultaneous determination of sixteen industrial pollutants in infant formula milk powder by dispersive solid phase extraction coupled with ultra high performance liquid chromatography-tandem mass spectrometry

RSC - Anal. Methods latest articles - Tue, 04/11/2017 - 05:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00652G, PaperDong He
A sensitive and high-throughput method based on dispersive solid phase extraction (dSPE) coupled with ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was developed for the simultaneous determination of sixteen...
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A convenient approach for the determination multiple trace BPs by using in-syringe-assisted solid phase microextraction system packed with elastic spongy graphene rod coupled with HPLC

RSC - Anal. Methods latest articles - Mon, 04/10/2017 - 12:33
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00352H, PaperLingling Wang, Qi Li, Lei Zhang
The elastic cylindrical three-dimensional porous spongy graphene rod (3D-PSGR) was synthetized by a facile one-step hydrothermal method and applied in a syringe system as a solid phase adsorbent for extraction...
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