Analytical Chemistry News

Paper-based readout to improve the measuring accuracy of gold nanoparticle aggregation-based colorimetric biosensors

RSC - Anal. Methods latest articles - Sun, 08/20/2017 - 22:47
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01683B, PaperSheng Cheng, Jingjing Tian, Bin Zheng, Haibing Wei, Yunsheng Ding, Jiejing Zhao
The dynamic process of nanoparticles aggregation, especially salt induced one which has a high aggregation rate in 300 seconds, is an obstacle to accurate signal captures in a predetermined time...
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Quantitative analysis of different nitrogen isotope labelled nitrate in paddy soil using mid-infrared attenuated total reflectance spectroscopy

RSC - Anal. Methods latest articles - Sun, 08/20/2017 - 22:47
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01507K, PaperYanqiu Shao, Du Changwen, Jianmin Zhou, Zhu Ying, Kai Yang, Chao Tian
Nitrogen isotope labelled technology with mass spectroscopy is commonly used to trace the fate of agricultural N in the environment. However, due to mass spectroscopy's costly, time consumption and long...
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In-syringe Chitosan-assisted Dispersive Micro-solid Phase Extraction for the Determination of Anthraquinones in Rhubarb-based Oral Liquids by High Performance Liquid Chromatography

RSC - Anal. Methods latest articles - Sun, 08/20/2017 - 22:47
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01525A, PaperZhihong Shi, Dan Zhang, Xinghong Li, Huimin Shen, Xuan Zhao, Hongyi Zhang
A novel in-syringe chitosan-assisted dispersive micro-solid phase extraction method was established for the determination of anthraquinones in three kinds of traditional Chinese medicinal oral liquids containing rhubarb. Some parameters affecting...
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A fast detecting food Escherichia coli using Nanoprobe and ATP bioluminescence technology

RSC - Anal. Methods latest articles - Sun, 08/20/2017 - 22:47
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01607G, PaperZhijie Zhang, Liren Zhang, Chunxing Wang, Qingtian Meng, Yuemin Zhang, Fang Sun, Yuanda Xu
In recent years, high demand on food safety technology has made precision and accurate detection technology as an urgent research topic. This paper presents a novel biochemical system prototype for...
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Simple method for the quantitative analysis of thin copolymer films on substrates by infrared spectroscopy using direct calibration

RSC - Anal. Methods latest articles - Sun, 08/20/2017 - 22:47
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01748K, PaperMartin Tazreiter, Paul Christian, Robert Schennach, Thomas Griesser, Anna Maria Coclite
The chemical composition of a copolymer drives many important material properties and quantification in terms of comonomer volume fraction is thus of practical relevance for many studies. Infrared spectroscopy is...
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Screening of Histone Deacetylase 1 Inhibitors in Natural Products by Capillary Electrophoresis

RSC - Anal. Methods latest articles - Sun, 08/20/2017 - 22:47
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01428G, Paperyan mei zhang, feng li, jing wu kang
A method for screening of histone deacetylase (HDAC) inhibitors in natural products by using capillary electrophoresis (CE) equipped with laser induced fluorescence (LIF) detection was developed. The method was developed...
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Ambient mass spectrometry

RSC - Anal. Methods latest articles - Fri, 08/18/2017 - 08:03

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90107K, EditorialFacundo[space]M. Fernandez, Juan F. Garcia-Reyes
Welcome to this Analytical Methods themed collection on ambient mass spectrometry, guest edited by Facundo M. Fernandez and Juan F. Garcia-Reyes.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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Synthesis of mono-disperse well-defined core-shell magnetic molecularly-imprinted polymer prior to LC-MS/MS for fast and sensitive determination of mycotoxins residue in rice

RSC - Anal. Methods latest articles - Thu, 08/17/2017 - 04:48
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01444A, PaperShengdong Pan, Mei-Jun Ye, Guo-Sheng Gao, Qian He, Li Wang, Xiao-Hong Chen, Qiao-Li Qiu, Mi-Cong Jin
In this paper, mono-disperse well-defined core-shell magnetic molecularly-imprinted polymer (MD-CS-MMIP) was controllably synthesized via modified precipitation polymerization and used as magnetic solid-phase extraction adsorbent for simultaneous determination of six trace...
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Control of pH for separated quantitation of nitrite and cyanide ions using photoluminescent copper nanoclusters

RSC - Anal. Methods latest articles - Thu, 08/17/2017 - 02:47
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01300K, PaperJinshun Cang, Chia-Wei Wang, Po-Cheng Chen, Yi-Jyun Lin, Yu-Chi Li, Huan-Tsung Chang
A dual sensing probe has been developed for detection of nitrite (NO2-) and cyanide (CN-) ions based on analyte-induced photoluminescence (PL) quenching of thiosalicylic acid (TA) capped-copper (Cu) nanocluster (NC)...
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Fabrication and Gas Sensing Application of Fast-Responding m-CP-PVP Composite Film/Potassium Ion-Exchanged Glass Optical Waveguide

RSC - Anal. Methods latest articles - Wed, 08/16/2017 - 23:44
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01541K, PaperMin Zhu, Nuerguli Kari, Yin Yan, Abliz Yimit
M-cresol purple-polyvinylpyrrolidone (m-CP-PVP) composite-film was immobilized on the surface of a potassium ion-exchanged glass optical waveguide using spin-coating method. Optical properties of the film were probed by UV-visible Spectroscopy and...
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CoOOH-induced synthesis of fluorescent polydopamine nanoparticles for the detection of ascorbic acid

RSC - Anal. Methods latest articles - Wed, 08/16/2017 - 20:42
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01566F, PaperYan-Yan Zhao, Li Li, Ruqin Yu, Ting-Ting Chen, Xia Chu
As an important biological small molecular, ascorbic acid (AA) plays a key role in many bioprocess. Here, we developed a novel method to evaluate AA based on the redox reaction...
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Quantitative analysis of salvianolic acids, ginsenosides and borneols using 1H qNMR for quality control of Compound Danshen Dripping Pill

RSC - Anal. Methods latest articles - Wed, 08/16/2017 - 20:42
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00938K, CommunicationXia-Lin Chen, Jin Qi, Bo-Yang Yu
Compound Danshen Dripping Pill (CDDP) is a Chinese herbal medicinal preparation composed of Salviae miltiorrhizae Radix and two other Chinese medicines, Notoginseng Radix and Borneolum. The main components of CDDP...
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Liquid-Liquid Extraction as a Sample Preparation Procedure for Determination of Na, K, Ca, and Mg in Biodiesel

RSC - Anal. Methods latest articles - Wed, 08/16/2017 - 05:26
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01482A, PaperAriane Isis Barros, Adriana Paiva Oliveira, J.A. Gomes Neto, Ricardo Dalla Villa
Abstract Liquid-liquid extraction is proposed as a clean sample preparation procedure for determination of Na, K, Ca, and Mg in biodiesel by line source flame atomic absorption spectrometry (LS FAAS)...
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A NOVEL EXTRACTION-BASED PROCEDURE FOR THE DETERMINATION OF CADMIUM IN MARINE MACRO-ALGAE USING HR-CS GF AAS

RSC - Anal. Methods latest articles - Tue, 08/15/2017 - 22:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01283G, PaperMauana Schneider, Daiane P Quadros, Bernhard Welz, Eduardo Carasek, Eduardo de Oliveira Bastos, Leonardo Rubi Rorig
This work proposes a simple method for the determination of Cd in macro-algae by high-resolution continuum source graphite furnace atomic absorption spectrometry. An acid digestion procedure in a thermostatic bath...
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Carrier assisted electromembrane extraction based on nonionic lipophilic surfactant for determination of basic drugs in urine samples

RSC - Anal. Methods latest articles - Tue, 08/15/2017 - 22:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00673J, PaperAli Reza Fakhari Zavareh, Zolfaghar Aladaghlo, Kobra Sadat Hasheminasab
Herein, an efficient carrier assisted electromembrane extraction coupled to capillary electrophoresis has been proposed for quantitation of basic drugs (pseudoephedrine and tramadol) in urine samples. The presence of nonionic lipophilic...
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A signal-off aptasensor for the determination of Ochratoxin A by differential pulse voltammetry at modified Au electrode using methylene blue as electrochemical probe

RSC - Anal. Methods latest articles - Tue, 08/15/2017 - 21:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01735A, PaperMin Wei, Shuo Feng
In this work, a novel signal-off aptasensor was constructed for the determination of Ochratoxin A (OTA) using differential pulse voltammetry. Methylene blue (MB) was used as an electrochemical indicator by...
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Estimation of relative oxygen metabolic activity microdistribution in biofilms based on the catastrophe point phenomenon during oxygen-infuse processes

RSC - Anal. Methods latest articles - Tue, 08/15/2017 - 21:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01773A, PaperJian-Hui Wang, Hai-Yan Li, Jin-Song Guo, Peng Yan, Yu Shen, You-Peng Chen
Biofilm reactor offers an alternative technology to the conventional activated sludge process in treating wastewater. Understanding the microbial activity microdistribution in heterogeneous biofilms will do favor to explore the microbial...
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An efficient grafting technique for producing molecularly imprinted film via reversible addition-fragmentation chain transfer polymerization

RSC - Anal. Methods latest articles - Sun, 08/13/2017 - 23:41
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01623A, PaperYang Wang, Shaoqin Jiao, Xiaoli Chen, Tianxin Wei
An efficient approach to obtaining molecularly imprinted polymer (MIP) film for detection of 17[small beta]-Estradiol (E2) with water-compatible property, using a reversible addition-fragmentation chain transfer (RAFT) by photo-initiated is described. 2-methyl-2-[(dodecylsulfanylthiocarbonyl)sulfanyl]propanoic...
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Colorimetric sensor for highly sensitive and selective detection of copper ion

RSC - Anal. Methods latest articles - Sun, 08/13/2017 - 23:41
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01335C, PaperQi Gao, Ling Ji, Qiaoning Wang, Kun Yin, Jinhua Li, Lingxin Chen
Copper ion (Cu2+), as a type of essential element, plays important roles in various metabolic processes of organisms. However, excessive intake of Cu2+ can induce a series of diseases, such...
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The electrochemical sensor of dopamine based on polydopamine modified reduced graphene oxide anchored with tin dioxide and gold nanoparticles

RSC - Anal. Methods latest articles - Fri, 08/11/2017 - 00:25
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00991G, PaperHong Zhao, Xiaoqing Cui, Xian Fang, Zeng xi Li, Hongxuan Ren
In the present work, polydopamine (PDA) modified reduced graphene oxide (pRGO)/SnO2/Au nanoparticles (NPs) were synthesized. The process is that SnO2/AuNPs was prepared through the redox reaction between reductive stannous (II)...
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