Analytical Chemistry News

Glutathione-S-Transferase catalyzed reaction of glutathione for electrochemical biosensing of Temephos, Fenobucarb and Dimethoate

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 08:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01258F, PaperHIMADRI BORAH, Rekha Rani Dutta, Sudarshan Gogoi, Tapas Medhi, Panchanan Puzari
This manuscript describes a sensitive bio-electrochemical detection method for extensively used toxic organophosphate pesticides temephos and dimethoate, and organocarbamate fenbucarb, by employing simple mediatorless cyclic voltammetric technique. The sensing scheme...
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Application of cysteamine-capped gold nanoparticles for early detection of lung cancer-specific miRNA (miR-25) in human blood plasma

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 07:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01098B, PaperAmineh Asadzadeh-Firouzabadi, Hamid Reza Zare
In this study, we designed a nanogenosensor based on cysteamine-capped gold nanoparticles (Cys-AuNPs) that makes it possible to detect the miRNA (miR-25) related to lung cancer. A single stranded probe...
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Drug Screening Method Development for Paper Spray Coupled to a Triple Quadrupole Mass Spectrometer

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 07:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01009E, PaperRachel Jett, Christine Skaggs, Nicholas Manicke
Paper spray mass spectrometry is a direct analysis method in which compounds are extracted and ionized from biofluids dried on paper. It is an attractive option for performing rapid drug...
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Optimisation of in vitro sample preparation for LC-MS metabolomics applications on HepaRG cell cultures

RSC - Anal. Methods latest articles - Mon, 06/12/2017 - 05:34

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00573C, PaperMatthias Cuykx, Olivier Mortele, Robim M. Rodrigues, Tamara Vanhaecke, Adrian Covaci
The addition of stabilizers during liquid-liquid extraction improves the precision of untargeted LC-MS metabolomics workflows.
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Determination of chlorine in plastic by isotope dilution inductively coupled plasma mass spectrometry

RSC - Anal. Methods latest articles - Fri, 06/09/2017 - 06:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01065F, Technical NoteMasaki Ohata, Ayaka Wada
The determination of chlorine (Cl) in plastic by isotope dilution inductively coupled plasma mass spectrometry (ID-ICPMS) coupled with different sample pretreatment procedures was examined in the present study. In order...
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Using porcine bone marrow to analyze fenproporex and its metabolite amphetamine for forensic toxicological purposes: method development and validation

RSC - Anal. Methods latest articles - Fri, 06/09/2017 - 05:03
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00807D, PaperElisangela Santos, ELIANI SPINELLI, Francisco Aquino Neto, SILVANA VIANNA RODRIGUES
The possibility of detecting drugs of abuse in bone marrow represents an important issue in forensic toxicology. Bone marrow is an alternative matrix for cases in which the matrices commonly...
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Pulsed probe electrospray and nano-electrospray: the temporal profiles of ion formation from the Taylor cone

RSC - Anal. Methods latest articles - Thu, 06/08/2017 - 07:51
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01275F, PaperDilshadbek Tursunbayevich Usmanov, Kenzo Hiraoka, Satoshi Ninomiya, Lee Chuin Chen, Hiroshi Wada, Masaya Matsumura, Sachiyo Sanada-Morimura, Keisuke Nakata, Hiroshi Nonami
The temporal profiles of the ion signals were measured for probe electrospray ionization (PESI) and nano-electrospray ionization (nESI) by changing the pulse width of high voltage applied to the emitters...
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Fluorescence detection of vitamin B12 in human plasma and urine samples using silver nanoparticles embedded into chitosan in micellar media

RSC - Anal. Methods latest articles - Thu, 06/08/2017 - 07:51
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01297G, PaperNahid Pourreza, Roya Mirzajani, jafar burromandpiroze
Herein, a novel fluorescence method has been developed for the determination of vitamin B12 .The method is based on the interaction of vitamin B12 with silver nanoparticles embedded in chitosan...
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Determination of heavy metals in cigarettes using high-resolution continuum source graphite furnace atomic absorption spectrometry

RSC - Anal. Methods latest articles - Wed, 06/07/2017 - 11:44
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00930E, PaperTing Ren, Xi Chen, Yao Ge, Lijiao Zhao, ru-gang zhong
Heavy metal contamination induced by cigarette smoking is a critical issue in environmental pollution and human health risk. Although a number of investigations have been performed on the detection of...
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Fluorescence Zn-Based Metal-Organic Frameworks for the Detection Hydrogen Sulfide in Natural Gas

RSC - Anal. Methods latest articles - Wed, 06/07/2017 - 09:43
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01193H, PaperRongcai Song, Lin Hou, Yuanyuan Wang, Yanyan Li, Xuesong Wang, Yuxi Zang, Yunong Zang, Xiangcheng Wang, Shuguang Yan
Fluorescence zinc-based metal-organic frameworks (Zn-MOF) were synthesized via the solvothermal method. The materials were characterized by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy,...
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Balancing the utility and legality of implementing portable mass spectrometers coupled with ambient ionization in routine law enforcement activities

RSC - Anal. Methods latest articles - Wed, 06/07/2017 - 08:43

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00972K, PaperAlessandra M. Bruno, Scott R. Cleary, Adam E. O'Leary, Michael C. Gizzi, Christopher C. Mulligan
Ambient sampling, portable MS systems have the potential to allow field processing of forensic evidence, as well as serve as a flexible investigative tool during law enforcement activities. However, the underlying legal implications require the discretion of practitioners to ensure both lawful and ethical usage.
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Gold Nanoparticle/Hexaammineruthenium/Nafion[registered sign] Modified Glassy Carbon Electrodes for Trace Heavy Metal Detection in Commercial Hair Dyes

RSC - Anal. Methods latest articles - Tue, 06/06/2017 - 11:37
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01114H, PaperShirley Palisoc, Alnira Mei Causing, Michelle Natividad
Gold nanoparticle (AuNP) / hexaammineruthenium(III) ([Ru(NH3)6]3+) / Nafion[registered sign] modified glassy carbon electrodes (GCEs) were fabricated and used as working electrodes in the determination of lead and cadmium in commercial hair...
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Development of inexpensive, practical and non-destructive methodology based on digital images of scanner to classification of the commercial tanning from Acacia mearnsii

RSC - Anal. Methods latest articles - Tue, 06/06/2017 - 08:37
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00945C, PaperFabio dos Santos Grasel, Marcelo Caetano Alexandre Marcelo, Marco Flores Ferrao
Among the oldest applications of tannins is leather tanning. Skin, as it is when removed from slaughtered animals, is not suitable for use by humans due to susceptibility to attack...
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Comparison of multivariate classification algorithms using EEM fluorescence data to distinguish Cryptococcus neoformans and Cryptococcus gattii pathogenic fungi

RSC - Anal. Methods latest articles - Tue, 06/06/2017 - 08:37
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00781G, PaperFernanda SL Costa, Priscila Silva, Camilo Lelis, Raquel Theodoro, Thales Arantes, K. M. G. de Lima
Cryptococcus neoformans and Cryptococcus gattii are the etiologic agents of cryptococcosis, whose suitable treatment depends of rapid and correct detection and differentiation of the Cryptococcus specie. Currently, this identification is...
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A novel electrochemiluminescence sensor for bisphenol A determination based on graphene-palladium nanoparticles /polyvinyl alcohol hybrids

RSC - Anal. Methods latest articles - Tue, 06/06/2017 - 08:37
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01244F, PaperYijie Hu, Zhimin Liu, Haijun Zhan, Leqian Hu, Lin Cui, Kang Wang
Graphene-palladium nanoparticles (PdNPs-GR) were synthesized and dispersed in polyvinyl alcohol (PVA) to obtain PdNPs-GR/PVA composite. The composite was used to establish novel Ru(bpy)32+-based electrochemiluminescence (ECL) sensing platform for the sensitive...
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A novel "turn-on" fluorescence sensor for high selectively detecting Al(III) in aqueous solution based on simple electrochemical synthesized carbon dots

RSC - Anal. Methods latest articles - Tue, 06/06/2017 - 08:37
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01137G, PaperXu-Cheng Fu, Jiangzhou jin, Ju Wu, Juncheng Jin, chenggen xie
In this paper, a simple and sensitive "turn on" fluorescent sensor for detecting Al3+ ion in aqueous solution is developed based on carbon dots (C-dots) obtained by one-step electrolysis of...
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News from the Analytical Methods editors

RSC - Anal. Methods latest articles - Tue, 06/06/2017 - 04:36

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90061A, Editorial
An update from the new Analytical Methods Editor-in-Chief, Scott Martin.
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Chemical Profiling and Classification of Cannabis through Electrospray ionization coupled to Fourier Transform Ion Cyclotron Resonance Mass Spectrometry and Chemometrics

RSC - Anal. Methods latest articles - Mon, 06/05/2017 - 09:27
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01294B, PaperWanderson Romao, Bruna Tassi Borille, Rafael S Ortiz, Kristiane de Cassia Mariotti, Gabriela Vanini, Lilian V. Tose, Paulo R Filgueiras, Marcelo Caetano Alexandre Marcelo, Marco Flores Ferrao, Michel Anzanello, Renata Limberger
Cannabis sativa is chemically characterized as terpenophenolic structures, named cannabinoids, which are exclusively found in this plant. In Brazil, the international trafficking of small amounts of cannabis seeds in transport...
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Probing the Binding Mechanism of Polybrominated Diphenyl Ethers with Transthretin by Multi-Spectroscopic and Molecular Dynamics Simulations

RSC - Anal. Methods latest articles - Mon, 06/05/2017 - 07:26
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00838D, PaperJie Xu, Zhongsheng Yi, Yu Chen Wei, Wu Yang, Lu Lu Yang, Jinfang Nie
Physical and chemical properties of polybrominated diphenyl ethers (PBDEs) are important for modeling their transport. The primary objective of this study is to evaluate the interaction of transthyretin (TTR) with...
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A New "On-Off" Fluorescent Probe for Selective Detection of Copper Ion in Living Cells

RSC - Anal. Methods latest articles - Mon, 06/05/2017 - 07:26
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01097D, PaperMingjie Wei, Youyu Zhang, Haitao Li, Shouzhuo Yao
A new "on-off" fluorescent probe 4',5'-bis((bis(thiophen-2-ylmethyl)amino)methyl)-2',7'-dichloro-3',6'-dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (probe F) for selective detection of copper ion was synthesized and characterized. The favorable features of the proposed probe included good selectivity, high sensitivity,...
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