Analytical Chemistry News

Chiral determination and assay of optical isomers in clandestine drug laboratory samples using LC-MSMS

RSC - Anal. Methods latest articles - Thu, 05/04/2017 - 10:10
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03125K, Technical NoteAna Popovic, Todd McBriar, Peter He, Alison Beavis
Many illicit drugs produced in clandestine laboratories exist as optical isomers, and due to their differing pharmacological properties, it is necessary to determine their respective amounts in a sample. Furthermore,...
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Sensitive Variables Extraction, Non-destructive Detection and Visualization of Total Viable Count (TVC) and pH in Vacuum Packaged Lamb Using Hyperspectral Imaging

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 11:02
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03321K, PaperHongwei Duan, Rongguang Zhu, Xuedong Yao, Elfed Lewis
The feasibility of hyperspectral imaging (HSI) for sensitive variables extraction, non-destructive detection and visualization of lamb total viable count (TVC) and pH was investigated. Regions of interest (ROIs) of pure...
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Encapsulation of enzyme into mesoporous cages of metal-organic frameworks for the development of highly stable electrochemical biosensors

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 08:01
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00710H, PaperWanwan Chen, Wensheng Yang, Yanluo Lu, Wanjun Zhu, Xu Chen
A water-stable metal-organic framework (MOF) [(PCN-333(Fe)] with ultra-large cavities and ultra-high porosity was synthesized, and employed to encapsulate horseradish peroxidases (HRP) for the fabrication of electrochemical biosensors. Due to the...
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Hydroxyl radical induced chemiluminescence of hyperbranched polyethyleneimine protected silver nanoclusters and its application in tea plolypehenols detection

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 08:01
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00903H, PaperShuang Zhao, Chen Chen, Zenghe Li, Zhiqin Yuan, Chao Lu
In this report, a simple approach for generating chemiluminescence (CL) of hyperbranched polyethyleneimine protected silver nanoclusters (hPEI-AgNCs) in solution by hydroxyl radical ([black circle]OH) was proposed. Emission of this CL system...
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Comparison of six derivatizing agents for the determination of nine synthetic cathinones using gas chromatography-mass spectrometry

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 07:00

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00597K, PaperKhalid A. Alsenedi, Calum Morrison
Insight into mass spectrometry ions and derivatization conditions for synthetic cathinone type new psychoactive substances.
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AuPd bimetallic nanoparticles-supported carbon nanotubes for selective detection of dopamine in the presence of ascorbic acid

RSC - Anal. Methods latest articles - Wed, 05/03/2017 - 06:00
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00875A, PaperHaitang Yang, Dandan Liu, Xiaoyu Zhao, Jinghe Yang, Hai-Bo Chang, Ruimin Xing, Shanhu Liu
The carbon nanotubes-supported AuPd bimetallic nanoparticles (AuPd/CNTs) nanocomposite modified glassy carbon (GC) electrode was fabricated and their catalytic properties towards dopamine (DA) in the presence of ascorbic acid (AA) were...
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Porous stamp-based reagent patterning for lateral flow immunoassays

RSC - Anal. Methods latest articles - Tue, 05/02/2017 - 06:54

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00744B, Technical NoteJessalyn Imdieke, Elain Fu
We present a novel method of stamping antibody patterns onto nitrocellulose for lateral flow assays.
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Rapid determination of impurity of boron nitride in amorphous boron powder using inductively coupled plasma-atomic emission spectrometry (ICP-AES) and ion chromatography(IC)

RSC - Anal. Methods latest articles - Tue, 05/02/2017 - 05:54
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00140A, PaperAbhay Yadav, Nitin Bulakh, Amit Gupta, Nirmala Sikder, Arun Kanti Sikder
Ever increasing use of amorphous boron powder (ABP) in high energy materials (HEMs) and allied composition has drawn attention for the frequent analysis of boron(B). Presence of nitrogen in inert...
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A sensitive and selective electrochemical nitrite sensor based on glassy carbon electrode modified with cobalt phthalocyanine-supported Pd nanoparticles

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 07:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01004D, PaperXueying Song, Li Gao, Yamin Li, Liqun Mao, Jing-He Yang
The cobalt phthalocyanine (Pd/CoPc) supported palladium nanoparticles composite materials are synthesized by using a facile methanol-mediated Weakly-Capping Growth Approach with anhydrous methanol as the mild reductant. Pd/CoPc nanorods have been...
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High Sensitivity Cysteine Detection Using a Novel Fluorescent Ag Nanocluster

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 05:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00310B, PaperHaomin Liu, Gang Mei, Shu Chen, Yun Fei Long
A fluorescent Ag nanocluster (AgNCs) stabilized by carboxymethyl dextran (CMD) was prepared by the photochemical reduction the mixture of CMD and [Ag(NH3)2]+ under ultraviolet C (UVC) light irradiation. Further study...
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Closed vessel microwave digestion of air filters for measurements of elemental iodine

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 05:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01017F, PaperDiane Ling Ying Tiong, Boon Kin Pong, Richard D Webster
An acid assisted closed vessel microwave digestion procedure was developed for the treatment of fine airborne particulate matter that allows elemental iodine to be solubilised simultaneously to other metallic elements....
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A magnetic restricted access material for rapid solid phase extraction of multiple macrolide antibiotics in honey

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 05:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00478H, PaperLijun Liu, Bingcheng Yang, Feifang Zhang, Xinmiao Liang
A magnetic restricted access material (MRAM) sorbent has been synthesized and for the first time used for extraction macrolide antibiotics (MACs). It was prepared using Fe3O4@SiO2 nanoparticles as support substrate,...
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Facile colorimetric assay for trinitrotoluene based on the intrinsic peroxidase-like activity of MoS2 nanosheets

RSC - Anal. Methods latest articles - Mon, 05/01/2017 - 05:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00484B, PaperYan Wang, Yi He, Rufang Peng, Shi-Jin Chu
In this study, a facile colorimetric assay for 2, 4, 6-trinitrotoluene (TNT) in aqueous solution based on the intrinsic peroxidase-like activity of cysteine protected molybdenum disulfide nanosheets (Cys-MoS2 NSs) is...
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Automated chemical fingerprinting of Mexican spirits derived from Agave (tequila and mezcal) using direct-injection electrospray ionisation (DIESI) and low-temperature plasma (LTP) mass spectrometry

RSC - Anal. Methods latest articles - Fri, 04/28/2017 - 12:22
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00793K, PaperSandra Martinez-Jarquin, Abigail Moreno-Pedraza, Daniel Cazarez-Garcia, Robert Winkler
Tequila and mezcal are Mexican spirits prepared from agave plants. The regulations for the designation 'tequila' are very strict with respect to used agave species, the geographical origin, and the...
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Potentiometric Determination of Urine Iodide by Nanoparticles Modified Carbon Paste Electrode

RSC - Anal. Methods latest articles - Fri, 04/28/2017 - 09:18
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00358G, PaperNing Wang, Fenfen Wang, Yeting Liao, Huanhuan Liu, Yijun Li, Xi-Wen He
A simple and sensitive solid carbon paste electrode (CPE) based on nanoparticles of silver iodide and silver sulfide was prepared for potentiometric determination of iodide in urine samples. The results...
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Direct and interference-free determination of thirteen phenolic compounds in red wines using chemometrics-assisted HPLC-DAD strategy for the authentication of vintage year

RSC - Anal. Methods latest articles - Thu, 04/27/2017 - 07:09
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00415J, PaperZhi Liu, Hai-Long Wu, Li-Xia Xie, Yong Hu, Huan Fang, Xiao-Dong Sun, Tong Wang, Rong Xiao, Ruqin Yu
In the present work, a novel chemometrics-assisted analytical strategy that combines three-way high performance liquid chromatography-diode array detection (HPLC-DAD) data with second-ord- er calibration method based on alternating trilinear decomposition...
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Simultaneous determination of [gamma]-hydroxybutyric acid, ibotenic acid and psilocybin in saliva samples by capillary electrophoresis coupled with a contactless conductivity detector

RSC - Anal. Methods latest articles - Thu, 04/27/2017 - 07:09
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00742F, PaperPiret Saar-Reismaa, Merike Vaher, Mihkel Kaljurand, Maria Kulp, Jekaterina Mazina-Sinkar
The aim of the study was to develop a methodology for the determination of [gamma]-hydroxybutyric acid (GHB), ibotenic acid (IBO) and psilocybin (PY) abuse in human saliva. Capillary electrophoresis with...
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BSA Directed-Synthesis of Biocompatible Fe3O4 Nanoparticles for Dual-Modal T1 and T2 MR Imaging in Vivo

RSC - Anal. Methods latest articles - Thu, 04/27/2017 - 06:09
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00270J, PaperDong Li, Minghui Hua, Kun Fang, Rong Liang
High-performance magnetic resonance (MR) imaging contrast agents are the key to reliable and accurate diagnosis of diseases using MR imaging technique. Especially, dual-modal MR imaging nanoprobes that integrated the advantages...
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Analysis of Hydrogen Isotopes with Quadrupole Mass Spectrometer

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 11:05
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00457E, PaperDawei Cao, Shuming Peng, Xiaojun Chen, Jingwei Hou, Ping Chen, Chengjian Xiao, yu gong, Heyi Wang
Hydrogen isotope separation is one of the most critical technological problems in nuclear fusion researches, whereas, in order to assess accurately the performance of hydrogen isotope separation, quantitative analysis of...
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Surface-enhanced Raman scattering using monolayer graphene-encapsulated Ag nanoparticles as a substrate for sensitive detection of 2,4,6-trinitrotoluene

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 10:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00724H, PaperZhuo Chen, Lu Qiu, Yunfei Tian, Y.-I. Lee, Xiandeng Hou, Li Wu
We developed a surface-enhanced Raman scattering (SERS)-active substrate based on chemical vapor deposition (CVD)-growth monolayer graphene-encapsulated silver nanoparticles (Ag NPs) and used it for the detection of 2,4,6-trinitrotoluene (TNT). Monolayer...
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