Analytical Chemistry News

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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Selective extraction of n-butylidenephthalide from Angelica sinensis (Danggui) by using functionalized iron oxide magnetic nanoparticles as trapping probes

RSC - Anal. Methods latest articles - Tue, 02/20/2018 - 22:58
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00065D, PaperChing-Yi Wu, Min-Li Wu, Yu-Chie Chen
n-Butylidenephthalide (BP) is an active compound in Angelica sinensis and a potential anti-cancer drug. Thus, purification of BP from a complex herb extract is important. In this study, we develop...
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Raman spectroscopic library of medieval pigments collected with five different wavelengths for investigation of illuminated manuscripts.

RSC - Anal. Methods latest articles - Tue, 02/20/2018 - 10:44
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00016F, Paper Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Giorgia Marucci, Andy Beeby, Anthony William Parker, Catherine Emma Nicholson
Raman spectroscopy is widely applied in the cultural heritage field to perform non-destructive measurements in situ, in order to identify materials, specifically pigments. The spectra collected can be challenging to...
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Development of a novel voltammetric sensor for the determination of quercetin onto electrochemically pretreated carbon-paste electrode

RSC - Anal. Methods latest articles - Mon, 02/19/2018 - 01:04
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02953E, PaperKonstantin Pliuta, Alexander Chebotarev, Anastasiya Koicheva, Kateryna Bevziuk, Denys Snigur
In this work, a simple, cheap and sensitive sensor for quercetin voltammetric determination was developed. Quercetin is a flavonoid that is widely distributed in the plants. Antioxidant, anti-cancer, antibacterial and...
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Adsorption and HPLC of carbohydrates and related hydroxy compounds on zeolites

RSC - Anal. Methods latest articles - Mon, 02/19/2018 - 01:04
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02634J, PaperWolfgang Wach, Iris Fornefett, Christoph Buttersack, Klaus Buchholz
Carbohydrates, sugar alcohols, polyols, and other hydroxy compounds were separated on a HPLC-column filled with dealuminated hydrophobic Y zeolite with water as eluent. Disaccharides show a greater retention and selectivity...
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Deep eutectic solvent-based extraction coupled with green two-dimensional HPLC-DAD-ESI-MS/MS for the determination of anthocyanins from Lycium ruthenicum Murr. fruit

RSC - Anal. Methods latest articles - Sun, 02/18/2018 - 23:03
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00101D, PaperJun Sang, Bing Li, Yaya Huang, Qun Ma, Kang Liu, Cui-qin Li
This study aimed to extract and separate total anthocyanins from Lycium ruthenicum Murr. by combining deep eutectic solvents (DES) with macroporous resin chromatography and to develop green analytical methods for...
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Electrocatalytic Performance of a Zinc sulphide Nanoparticles modified carbon paste electrode for the simultaneous determination of acetaminophen, guanine and adenine

RSC - Anal. Methods latest articles - Sun, 02/18/2018 - 23:03
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00007G, PaperShivaraj Yellappa, Mallappa Mahanthappa, Nagaraju Kottam
The simultaneous electroanalysis of acetaminophen (AC), guanine (G) and adenine (A) successfully achieved on the zinc sulphide nanoparticles modified carbon paste electrode (ZnS NPs/CPE) in phosphate buffer solution (PBS). Zinc...
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Dendrimer grafted nanoporous silica fiber for headspace solid-phase micro-extraction coupled to gas chromatography determination of solvents residues in edible oil

RSC - Anal. Methods latest articles - Thu, 02/15/2018 - 18:38
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02842C, PaperZahra Ramezani, Iman Saeedi, Payman Hashemi
A recently prepared nanoporous G (1)-Dendrimer supported Santa Barbara Amorphous-15 (SBA-15) solid phase micro-extraction (SPME) fiber was successfully applied to the headspace solid-phase micro extraction of solvent residues such as...
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Mid-Infrared Sensor for Hydrocarbon Monitoring: The Influence of Salinity, Matrix and Aging on Hydrocarbon-Polymer Partitioning

RSC - Anal. Methods latest articles - Wed, 02/14/2018 - 18:53
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02874A, PaperRobert Stach, Bobby Pejcic, Charles Heath, Matthew B Myers, Boris Mizaikoff
Mid-infrared sensors (MIR) based on attenuated total reflection (ATR) spectroscopy provide a robust and sensitive platform for the detection of low levels of organic molecules dissolved in water. The chemical...
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In-situ Methanation with Flame Ionization Detection for the Determination of Carbon Dioxide in Various Matrices

RSC - Anal. Methods latest articles - Wed, 02/14/2018 - 18:53
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00079D, PaperJim Luong, Yujuan Hua, Ronda Gras, Myron Hawryluk
An analytical technique that employs in-situ methanation with flame ionization detection for the measurement of carbon dioxide in various matrices has been developed and implemented. The methanation of carbon dioxide...
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Investigation of Ethosuximide Stability under Certain ICH-Recommended Stress Conditions Using Validated Stability-Indicating HPLC Method

RSC - Anal. Methods latest articles - Tue, 02/13/2018 - 18:33
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02740K, PaperYasser El-Shabrawy, Mohamed Walash, Nahed El-Enany, Rania Nabih El-Shaheny
A study of the chemical stability of the antiepileptic drug ethosuximide (ESX) under certain ICH-recommended stress conditions was conducted for the first time. A stability-indicating HPLC method was applied using...
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Instant enumeration of total viable bacterial counts for food quality assurance using 'DEP-On-Go' sensor

RSC - Anal. Methods latest articles - Tue, 02/13/2018 - 05:16
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02927F, CommunicationMadhu Biyani, Radhika Biyani, Hiromi Ushijima, Eiichi Tamiya, Manish Biyani
Food quality has to be constantly monitored from farm-to-table to control foodborne illness. Total viable count (TVC), which estimates the population of live microbial load, can be an extremely useful...
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Direct Analysis in Real Time Mass Spectrometry (DART-MS) of Discrete Sample Areas without Heat Damage

RSC - Anal. Methods latest articles - Tue, 02/13/2018 - 05:16
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02987J, PaperG. Asher Newsome, Ikumi Kayama, Shannon A. Brogdon-Grantham
Direct analysis in real time mass spectrometry (DART-MS) analyzes intact object surfaces by exposing them to a stream of heated gas. The continuous gas flow prevents discrete sampling of a...
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