Analytical Chemistry News

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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Calibration transfer of flour NIR spectra between benchtop and portable instruments

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 08:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00391A, PaperAnna Luiza Bizerra Brito, Ada Vivianny Pereira Santos, Karla Tavares Melo Milanez, M. J. C . Pontes , Liliana Pontes
This work reports on the use of different strategies of calibration transfer to determine crude protein and fiber properties in samples of functional flours analyzed with benchtop (primary) and portable...
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Tellurium Speciation in Bioleaching Solution by Hydride Generation Atomic Fluorescence Spectrometry

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 08:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00866J, PaperMao Chen, Lichuan Wu, Xin Yi, Kaizhi Yang, Hongguan Xie
The speciation analysis of tellurium in bioleaching solution is of great value for the study of bacteria leaching mechanism of tellurium ores and further separation and extraction of tellurium from...
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Characterising and reducing the blank response from mercury vapour sorbent tubes

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 08:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00451F, PaperRichard J C Brown, Emma Braysher, Elizabeth McGhee, Sharon L Goddard, Hugo Ent, Ki-Hyun Kim, Jasslie Nielsen
An investigation into the factors contributing to the blank response of sorbent tubes used for sampling and measuring mercury vapour is presented. These contributing factors are quantified and strategies to...
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Electrochemical impedance spectroscopy of blood for sensitive detection of blood hematocrit, sedimentation and dielectric properties

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 08:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00714K, PaperAlexander Zhbanov, Sung Yang
The electrochemical impedance spectroscopy (EIS) is a highly promising tool for the analysis of blood. The electrical properties of plasma and blood cells provide fundamental insights into the health status...
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Ultrasound assisted supramolecular solvent microextraction coupled with graphite furnace atomic absorption spectrometry for speciation analysis of inorganic arsenic

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 08:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00738H, Paperhomeira ebrahimzadeh, Rouhollah Kashanaki, Morteza Moradi
A novel ultrasonic-assisted supramolecular solvent microextraction (USASS-ME) method was proposed for the selective microextraction of As (III, V) prior to their determination by graphite furnace atomic absorption spectrometry. Supramolecular solvent...
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A pseudo-ELISA based on molecularly imprinted nanoparticles for detection of gentamicin in real samples

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 07:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00398F, PaperSiping Tang, Francesco Canfarotta, Katarzyna Smolinska-Kempisty, Elena Piletska, Antonio Guerreiro, Sergey A Piletsky
The enzyme-linked immunosorbent assay (ELISA) is one of the most widely employed tests in diagnostics, and it relies on the use of antibodies to quantify the molecule of interest. Molecularly...
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A glucometer-based strategy for sensitive DNA methyltransferase activity detection via polymerization nicking reaction and enzyme amplification

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 07:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00712D, CommunicationYing Chen, HongChao Yi
DNA methyltransferase (MTase) is closely related to the DNA methylation level in many biological processes and has been recognized as a predictive cancer biomarker which occurs before other signs of...
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Dynamic background noise removal from overlapping GC-MS peaks via an entropy minimization algorithm

RSC - Anal. Methods latest articles - Wed, 04/26/2017 - 06:04

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00632B, PaperChun Kiang Chua, Yunbo Lv, Hua Jun Zhang, Xiao Yu Gu
An entropy minimization approach is applied as a dynamic background noise removal system. Clean and pure mass spectra were extracted from overlapping GC-MS peaks and led to the accurate identification of chemical compounds.
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Application of hollow porous molecularly imprinted polymer using K2Ti4O9 coupled with SPE-HPLC for the determination of celecoxib in human urine samples: Optimization by Central Composite Design (CCD)

RSC - Anal. Methods latest articles - Tue, 04/25/2017 - 09:57
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00547D, PaperSaeedeh Ansari
A novel method is described for trace determination of celecoxib, a nonsteroidal anti-inflammatory drug (NSAID), by hollow porous molecularly imprinted polymer and solid-phase extraction (HPMIP-SPE) coupled with high-performance liquid chromatography...
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Determination of active ingredients in Chinese medicine Danning Tablets using dispersion solid-phase extraction by molecular imprinting nanomaterials coupled with HPLC-DAD

RSC - Anal. Methods latest articles - Tue, 04/25/2017 - 05:56

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00376E, PaperJieping Luo, Ning Chen, Zaiyue Yang, Jiyong Han, Wanying Zhu, Junli Hong, Xuemin Zhou
A reliable pretreatment method of magnetic molecularly imprinted polymers/dispersive solid-phase extraction was developed for selectivity and enrichment of targets.
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Highly efficient fluorescent and colorimetric sensing of organic amine vapors based on Organometal halide perovskite nanostructures

RSC - Anal. Methods latest articles - Mon, 04/24/2017 - 10:51
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00961E, PaperPengcheng Wu, Qingguo He, Defeng Zhu, Haibo Jiang, Zinuo Jiao, Yu Zhang, Wei Xu, Yanyan Fu, Huimin Cao, Jiangong Cheng
Volatile organic amine vapors existed in various areas of human life which can cause a series of harmful effect on environment and human life. Thus, the detection of organic amine...
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