Analytical Chemistry News

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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Fabrication of A Quinone Containing Layer on Gold Nanoparticles Directed To A Label-Free and Reagentless Electrochemical miRNAs Sensor

RSC - Anal. Methods latest articles - Mon, 04/10/2017 - 05:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00665A, PaperHoang Vinh TRAN, Nghia Duc Nguyen, Benoit Piro, Luyen Thi Tran
In this work, we report a simple electrochemical method to fabricate of label-free and reagentless electrochemical sensor for microRNAs detection based on self-assembly of a multifunctional layer on gold nanoparticles-modified...
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In-situ derivatization for double confirmation of 2C-C in oral fluids by ion mobility spectrometry

RSC - Anal. Methods latest articles - Mon, 04/10/2017 - 05:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00637C, PaperJuan Torres, Sergio Armenta, Francesc A. Esteve-Turrillas, Miguel de la Guardia
Ion mobility spectrometry (IMS) is a powerful tool to carry out quick and sensitive detection of illicit activities and has been employed for the determination of the psychedelic drug 2,5-dimethoxy-4...
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Rapid screening of pancreatic lipase inhibitors from Monascus-fermented rice by ultrafiltration liquid chromatography-mass spectrometry

RSC - Anal. Methods latest articles - Mon, 04/10/2017 - 05:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00777A, PaperYu-Xiang Fang, Song Huipeng, Jin-Xiu Liang, Ping Li, Hua Yang
Ultrafiltration liquid chromatography-mass spectrometry (UF-LC-MS), affinity-guided isolation, and molecular docking were integrated into one strategy for screening of enzyme inhibitors from functional foods. UF-LC-MS facilitated the rapid characterization of ligands...
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A user-friendly guide to the optimum ultraviolet photolithographic exposure and greyscale dose of SU-8 photoresist on common MEMS, microsystems, and microelectronics coatings and materials

RSC - Anal. Methods latest articles - Fri, 04/07/2017 - 09:56

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00564D, PaperMatthieu Gaudet, Steve Arscott
We provide here a user-friendly guide to find the optimum i-line (365 nm) photolithographic exposure dose of an arbitrary thickness of SU-8 on various substrate materials and thin film coatings used in MEMS, microsystems and microelectronics technologies: semiconductors, 2D materials (graphene and MoS2) plastics, glass, metals and ceramics.
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Analysis of changes in glycan composition of serum, cytosol and membrane glycoprotein biomarkers of colorectal cancer by lectin-based protein microarray

RSC - Anal. Methods latest articles - Fri, 04/07/2017 - 09:56
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00159B, PaperMartina Zamorova, Alena Holazova, Goran Miljus, Dragana Robajac, Milos Sunderic, Vesna Malenkovic, Blagoje Dukanovic, Peter Gemeiner, Jaroslav Katrlik, Olgica Nedic
The altered glycosylation of proteins is one of the cancer-related markers and monitoring of glycosylation status can significantly increase the informative value of protein biomarkers. Herein is presented the analytical...
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Simultaneous detection of three gynecological tumor biomarkers in clinic serum samples by ICP-MS based magnetic immunoassay

RSC - Anal. Methods latest articles - Thu, 04/06/2017 - 10:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00370F, PaperWeizhe Hong, Gongwei Sun, Yi Zhang, Zhi Xing, Biao Huang, Sichun Zhang, Xinrong Zhang
ICP-MS based multiplex immunoassay has the advantages of low sample consumption and minimized repetitions of tedious procedures. However, it is seldom used in clinical test because of the complicated matrix...
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Chiral separation of methadone in exhaled breath condensate using capillary electrophoresis

RSC - Anal. Methods latest articles - Thu, 04/06/2017 - 05:32

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00110J, PaperSamin Hamidi, Maryam Khoubnasabjafari, Khalil Ansarin, Vahid Jouyban-Gharamaleki, Abolghasem Jouyban
Breath analysis is a potential and non-invasive tool for monitoring drugs levels and the status of respiratory or systemic disorders and attracted more attentions in recent years.
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Analytical method for estimation of transfer and detection efficiencies of solid state explosive using ion mobility spectrometry and smear matrix

RSC - Anal. Methods latest articles - Wed, 04/05/2017 - 13:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00529F, PaperSung-Seen Choi, Chae Eun Son
Smearing method can be used as a simple and convenient sampling method for detection of trace explosive using portable ion mobility spectrometer (IMS) in the field such as security checks....
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A Visual Test Paper based on Pb(II) Metal-Organic Nanotube Utilized as H2S Sensor with High Selectivity and Sensitivity

RSC - Anal. Methods latest articles - Wed, 04/05/2017 - 10:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00627F, PaperXuelian Xin, Fangna Dai, Fugang Li, Xin Jin, Rongming Wang, Daofeng Sun
The fluorescent Pb(II)-metal-organic nanotube, CD-MONT-2, which possesses a large {Pb14} metallamacrocycle, is synthesized by a modified biphasic liquid-solid-liquid (BLSL) strategy. The strategy takes the advantage of solid cyclohexanol to avoid...
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