Analytical Chemistry News

The stability of 57 consensus values in a proficiency test material re-issued blind after an interval of 18 years

RSC - Anal. Methods latest articles - Wed, 03/07/2018 - 09:25
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00093J, PaperMichael Thompson, Peter C Webb, Philip J Potts, Stephen A Wilson
In 2017 a silicate rock test material was re-issued in the geoanalytical proficiency test GeoPT after an interval of 18 years. The second distribution was participant-blind. Consensus values (for each...
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A rapid colorimetric method for the detection of deltamethrin based on gold nanoparticles modified with 2-mercapto-6-nitrobenzothiazole

RSC - Anal. Methods latest articles - Wed, 03/07/2018 - 01:19
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00137E, PaperZhuQing Wang, Yunlong Huang, Dejin Wang, Li Sun, Chen Dong, Lanyun Fang, Yujie Zhang, Aiguo Wu
In this study, we developed a rapid colorimetric method for the detection of deltamethrin using gold nanoparticles modified with 2-mercapto-6-nitrobenzothiazole (Au NPs-MNBT): Deltamethrin adhered onto the surface of Au NPs-MNBT...
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Determination of amphetamine-type stimulants (ATSs) and synthetic cathinones in urine using solid phase micro-extraction fibre tips and gas chromatography-mass spectrometry

RSC - Anal. Methods latest articles - Tue, 03/06/2018 - 10:13

Anal. Methods, 2018, Advance Article
DOI: 10.1039/C8AY00041G, Paper Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Khalid A. Alsenedi, Calum Morrison
An optimum condition procedure applied to a SPME PDMS/DVB fiber tip in a mixture of drugs in a urine sample.
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Aptamer-Based Rolling Circle Amplification coupling with Graphene Oxide-Based Fluorescence Resonance Energy Transfer for Sensitive Detection of Cardiac Troponin I

RSC - Anal. Methods latest articles - Tue, 03/06/2018 - 01:02
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00309B, PaperYu Li, Weiqiang Dai, Xuefei Lv, Yulin Deng
Combing with the high affinity and specificity of aptamer with protein, a highly sensitive strategy for protein detection was developed based on rolling circle amplification (RCA) and graphene oxide based...
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Fluorescence sensing of mercury (II) and melamine in aqueous solutions through microwave-assisted synthesis of egg-white-protected gold nanoclusters

RSC - Anal. Methods latest articles - Mon, 03/05/2018 - 07:45
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00308D, PaperYing-Chiao Lin, Joseph Wu, Yang-Wei Lin
In this study, a microwave-assisted synthesis of fluorescent egg-white-protected gold nanoclusters (ew-AuNCs) for sensing Hg2+ ions and melamine was developed, optimized, and evaluated. By conducting infrared spectrometry, and matrix-assisted laser...
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A novel high hydrothermal stability amino-functionalized stationary phase prepared by vapour deposition method

RSC - Anal. Methods latest articles - Mon, 03/05/2018 - 04:42
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00133B, PaperMeng Chen, Lei Chen
A novel bistrimethoxysilylethane hydrolysis aminopropyltrimethoxysilane (BTME-H-APS) silica stationary phase was prepared through a three-step vapour deposition method. Compared to the toluene bonding method, vapour deposition route has the benefits of...
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Preparation of artificial antibodies and development of an antibody-based indirect ELISA for the detection of ancient wool

RSC - Anal. Methods latest articles - Fri, 03/02/2018 - 23:25
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00015H, PaperBing Wang, Jincui Gu, Qiushi You, Boyi Chen, Hailing Zheng, Yang Zhou, Zhiwen Hu
The use of wool from sheep is widespread in ancient and historic textiles. The detection of ancient wool can provide meaningful information for both archaeologists and academics. However, the efficacy...
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A high-throughput method for the element determination in green coffee bean using diluted nitric acid and ultrasound energy

RSC - Anal. Methods latest articles - Thu, 03/01/2018 - 19:29
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00331A, Technical NoteJefferson Santos de Gois, Izylla Oliveira Lucena, Paulo Sergio de Oliveira Cezario, Arnaldo P. da Silva, Igor C. A. Lima, Aderval S. Luna
Different coffee varieties have been developed due to climatic particularities in Brazil; these varieties may have to overcome rigorous quality control that includes, among other, the element determination, for which,...
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Paper spray ionization mass spectrometry allied to chemometric tools for quantification of whisky adulteration with additions of sugar cane spirit.

RSC - Anal. Methods latest articles - Thu, 03/01/2018 - 07:19
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00071A, PaperFlavia Tosato, Radigya M Correia, Bruno G Oliveira, Andre Mazega, Hildegardo Franca, Wendell Karlos Tomazelli Coltro, Paulo R Filgueiras, Wanderson Romao
Whisky is one of the most commercialized distilled beverages in the world. Due to its large commercialization, the number of cases involving the adulteration of this beverage has increased. This...
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A Versatile Matrix of Ionic Liquid Functionalized with Aldehyde and Ferrocene for Label-Free Electrochemical Immunosensors

RSC - Anal. Methods latest articles - Thu, 03/01/2018 - 06:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00108A, PaperYouming Shen, Guangyu Shen, Youyu Zhang
A novel ionic liquid functionalized with aldehyde and ferrocene was successfully synthesized. It was used to develop a label-free electrochemical immunosensor for the detection of human immunoglobulin G by casting...
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Microfluidic-based measurement of RBC aggregation and ESR using a driving syringe system

RSC - Anal. Methods latest articles - Wed, 02/28/2018 - 23:11
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02719B, PaperYang Jun Kang
Erythrocyte sedimentation rate (ESR) and red blood cell (RBC) aggregation have been widely used to detect inflammatory diseases. In this study, a simple measurement method is proposed to simultaneously quantify...
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Beam sampling: taking samples at the micro-scale

RSC - Anal. Methods latest articles - Tue, 02/27/2018 - 11:22

Anal. Methods, 2018, Advance Article
DOI: 10.1039/C8AY90021C, AMC Technical Brief Analytical Methods Committee, AMCTB No. 84
Beam sampling occurs in most micro-analytical measurements, such as those by Secondary Ion Mass Spectrometry. The uncertainty of such measurements must therefore include the uncertainty arising from this sampling process.
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Aqueous, non-aqueous electrophoresis and micellar electrokinetic capillary chromatography of a mixture of quinoline-2-thione and 8-mercaptoquinoline hydrochloride.

RSC - Anal. Methods latest articles - Mon, 02/26/2018 - 07:22
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02875J, CommunicationЗарубина Анастасия, Chernov'yants Sergeevna Chernov'yants
In this paper three variants of the electrophoretic method for the determination of thioamides, quinoline derivatives are given: aqueous capillary electrophoresis, micellar electrokinetic capillary chromatography and non-aqueous electrophoresis. CE has...
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Ultrasensitive fluorescence aptasensor for carcino-embryonic antigen detection based on fluorescence resonance energy transfer from upconversion phosphors to Au nanoparticles

RSC - Anal. Methods latest articles - Mon, 02/26/2018 - 04:07
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02803B, PaperXiang-Hui Li, Wei-Ming Sun, Juan Wu, Yao Gao, Jinghua Chen, Min Chen, Qishui Ou
A novel fluorescence resonance energy transfer (FRET)-based aptasensor was proposed for carcino-embryonic antigen (CEA) detection utilizing NaYF4: Yb3+, Er3+ upconversion nanoparticles (UCNPs) and gold nanoparticles (Au-NPs) as energy donor and...
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Encapsulating Ruthenium(II) complex into metal organic frameworks to engender high sensitivity for dopamine electrochemiluminescence detection

RSC - Anal. Methods latest articles - Mon, 02/26/2018 - 04:07
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02903A, PaperYang Li, Liu Yang, Zhe Wei Peng, Cheng Zhi Huang, Yuan Fang Li
In this contribution, an ultra-sensitive electrochemiluminescence (ECL) sensor was proposed for dopamine (DA) detection based on a ruthenium(II) complex (Tris(2,2-bipyridyl) dichlororuthenium(II) hexahydrate, Ru(bpy)32+) functionalized Zn(II) metal-organic frameworks (Ru-MOFs). The Ru-MOFs,...
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"A Simple Device for Rapid quantification of Cell Number from Equine Buccal Swab Samples"

RSC - Anal. Methods latest articles - Mon, 02/26/2018 - 02:01
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00338F, PaperKim Quayle, Egan H Doeven, Richard Alexander, Giorgio M De Guzman, Andrew F Clarke, Stephen Haswell, Paul S Francis, Xavier Conlan
Biological samples are notoriously difficult to use within portable miniaturised devices, often due to complex sample matrices or variation between cellular samples. Herein we describe a device that utilises a...
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Spectrochemical determination of unique bacterial responses following long-term low-level exposure to antimicrobials

RSC - Anal. Methods latest articles - Sun, 02/25/2018 - 22:57
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00011E, PaperNaifu Jin, Kirk T Semple, Longfei Jiang, Chunling Luo, Francis L Martin, Dayi Zhang
Agents arising from engineering or pharmaceutical industries may induce significant environmental impacts. Particularly, antimicrobials not only act as efficient eliminators of certain microbes but also facilitate the propagation of organisms...
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Chemometrics-assisted liquid chromatography-full scan-mass spectrometry for simultaneous determination of multi-class estrogens in infant milk powder

RSC - Anal. Methods latest articles - Fri, 02/23/2018 - 10:30
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02733H, PaperXiao-Dong Sun, Hai-Long Wu, Zhi Liu, Li-Xia Xie, Yong Hu, Huan Fang, Tong Wang, Rong Xiao, Yu-Jie Ding, Ruqin Yu
In the present work, a smart analytical strategy that combined liquid chromatography-full scan-mass spectrometry with second-order calibration method based on alternating trilinear decom-position (ATLD) algorithm was developed for simultaneous determination...
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Recyclable silver nanoplate-decorated copper membrane for solid-phase extraction coupled with surface-enhanced Raman scattering detection

RSC - Anal. Methods latest articles - Wed, 02/21/2018 - 22:22
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00043C, PaperXiaofei Yu, Yuhong Chang, Vinothkumar Natarajan, Xiao Li Zhang, Jinhua Zhan
The development of solid phase extraction (SPE) combined with the sensitive detection of surface enhanced Raman spectroscopy (SERS) has been successfully applied for the analyses of complex environmental samples. In...
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Powder Microelectrode Embedded with Carboxyl Multi-Walled Carbon Nanotubes for Sensitive and Quantitative Detection of Nitrofuran Residues

RSC - Anal. Methods latest articles - Tue, 02/20/2018 - 22:58
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00289D, PaperBaoshan He, Xiaoze Dong
In this study, a sensitive electrochemical detection method of nitrofuranzone (NF) and semicarbazide (SC) based on powder microelectrode embedded with carboxyl multi-walled carbon nanotubes was developed. The carboxyl groups was...
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