Analytical Chemistry News

Hydrophilic interaction liquid chromatography tandem mass spectrometry method for the identification and determination of cationic starch derivates in air samples

RSC - Anal. Methods latest articles - Mon, 02/13/2017 - 05:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03409H, PaperFabio Gosetti, Eleonora Mazzucco, Andrea Secco, Elisa Robotti, Marcello Manfredi, Emilio Marengo
The industrial processes of starch cationization are widely used and the workers must protect their health from the potential presence of toxic species, such as 2,3-epoxypropyltrimethylammonium chloride (ETA or Quab...
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Improved solid-phase extraction protocol and sensitive quantification of six microcystins in water using an HPLC-orbitrap mass spectrometry system

RSC - Anal. Methods latest articles - Mon, 02/13/2017 - 05:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03459D, PaperDilrukshika S. W. Palagama, Raymond E West III, Dragan Isailovic
A solid-phase extraction (SPE) protocol was developed and combined with HPLC-ESI-MS for the quantification of common cyanobacterial toxins, microcystins (MCs), in water. An HPLC binary gradient was established for the...
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Detection of Cortisol in Serum Using Quantitative Resonance Raman Spectroscopy

RSC - Anal. Methods latest articles - Mon, 02/13/2017 - 05:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03296F, PaperKirsten Gracie, Susan Pang, Gerwyn M Jones, Karen Faulds, Julian Braybrook, Duncan Graham
Measurement of cortisol in serum is used commonly as an indicator of stress and disease. Conventional analytical techniques have limited utility given that they remain largely laboratory based, they do...
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Application of targeted 1H NMR profiling to assess the seed vitality of soybean [Glycine max (L.) Merr.]

RSC - Anal. Methods latest articles - Mon, 02/13/2017 - 04:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY02867E, PaperWen-Ting Qin, Cai-qiong Yang, Iqbal Nasir, Jun-cai Deng, Jing Zhang, Kai Shu, Junbo Du, Feng Yang, Wen-yu Yang, Jiang Liu
Assessment of seed vitality was commonly hampered for phytologist, especially to the small amount of precious germplasms involving breeding research. Researchers tried to avoid loss of precious samples as much...
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Synthesis and evaluation of ion imprinted sol-gel material of selenite

RSC - Anal. Methods latest articles - Mon, 02/13/2017 - 04:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03286A, PaperChang Shi, Guo-Sheng Ding, An-na Tang, Yuanyuan Qiao
Highly selective selenite (SeO32-) ion imprinted polymers (Se (IV)-IIPs) were prepared by the combination of surface ion imprinting and sol-gel techniques, and then successfully used for the selective removal and...
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A novel GC-MS method for the determination and quantification of metformin in surface water

RSC - Anal. Methods latest articles - Mon, 02/13/2017 - 03:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY02606K, CommunicationCaroline Goedecke, Ina Fettig, Christian Piechotta, Rosemarie Philipp, Sven Uwe Geissen
The drug therapy for diabetes mellitus has increased significantly in recent years. 1,1-dimethylbiguanide hydrochloride (metformin) is the most common drug used for the treatment of diabetes. Metfomin is not metabolized...
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Development of competitive indirect ELISAs with flexible working range for the simple quantification of melatonin in medicinal foods

RSC - Anal. Methods latest articles - Fri, 02/10/2017 - 12:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03380F, PaperZi-Jian Chen, Hui-Jun Fu, Lin Luo, Yuan-Ming Sun, Jin-Yi Yang, Daoping Zeng, Yu-Dong Shen, Zhen-Lin Xu
Melatonin (MT) is a hormone usually used in medicinal foods for all kinds of purpose. The monitor of its content is necessary to guarantee the quality of medicinal foods as...
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Bisulfite-free approaches for DNA methylation profiling

RSC - Anal. Methods latest articles - Thu, 02/09/2017 - 09:54
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00232G, Critical ReviewTakaaki Kurinomaru, Ryoji Kurita
The determination of epigenetic modification, especially that of 5-methylcytosine in the CpG sequence in mammals, has attracted attention because it should prove valuable in a wide range of research fields...
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A sheath-less electric impedance micro-flow cytometry device for rapid label-free cell classification and viability testing

RSC - Anal. Methods latest articles - Thu, 02/09/2017 - 08:53

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C6AY03326A, PaperXinwu Xie, Zhen Cheng, Youchun Xu, Ran Liu, Qi Li, Jing Cheng
A sheath-less PDMS microfluidic IFC device with a simple structure was constructed, with a good performance in single-cell detection. The electrical conductance and susceptance were used to differentiate the beads/cells.
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Performance of Surface Renewable pH Electrodes based on RuO2-Graphite-Epoxy Composites

RSC - Anal. Methods latest articles - Wed, 02/08/2017 - 05:44
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY02950G, PaperShanluo Huang, Yan Jin, Ziqi Su, Qing-Hui Jin, Jianlong Zhao
In this work, surface renewable pH electrodes comprising RuO2-Graphite-Epoxy composites were developed. Three electrode types with different composite ratios were fabricated and their performance was investigated in detail by the...
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High-throughput analysis of endogenous fruit glycosyl hydrolases using a novel chromogenic hydrogel substrate assay

RSC - Anal. Methods latest articles - Mon, 02/06/2017 - 06:24
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03431D, CommunicationJulia Schuckel, Stjepan K Kracun, Thomas Frederik Lausen, William George Tycho Willats, Bodil Jorgensen
A broad range of enzyme activities can be found in a wide range of different fruits, vegetables and fruiting bodies but there is a lack of methods where many samples...
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Review - trace determination of potentially toxic elements in (medicinal) plant materials

RSC - Anal. Methods latest articles - Mon, 02/06/2017 - 06:24
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00016B, Critical ReviewMichaela Zeiner, Iva Juranovic Cindric
Medicinal herbs are nowadays widely used as home-remedies for a huge variety of ailments. As non synthetic medicines, they are considered safe for human health. Due to metal uptake from...
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Optimization of the Extraction of Sixteen cephalosporines in Milk by the Filtered Solid Phase Extraction and Ultra High Pressure Liquid Chromatography Coupled to Tandem Mass Spectrometry

RSC - Anal. Methods latest articles - Mon, 02/06/2017 - 06:24
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03444F, PaperJianfeng Wang, Xiaojing Fan, Yan Liu, Zhenxia Du, Yuechao Feng, Jia Li, Jinghua Zhang
A method with a type of filtered solid phase extraction based on PRiME hydrophilic lipophilic balance(HLB) was developed for extracting cephalosporin compounds(cephalexin monohydrate, cefradine, cefazolin, cefotaxime, cefmenoxime, cefoperazone sodium, cefadroxil,...
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New strategies for stationary phase integration within centrifugal microfluidic platforms for applications in sample preparation and pre-concentration

RSC - Anal. Methods latest articles - Mon, 02/06/2017 - 06:24
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00127D, PaperEmer Duffy, Rima Padovani, Xiaoyun He, Robert Gorkin, Elizaveta Vereshchagina, Jens Ducree, Ekaterina P Nesterenko, Pavel N. Nesterenko, Dermot Brabazon, Brett Paull, Mercedes Vazquez
New approaches for fabrication of centrifugal microfluidic platforms ([small mu ]CDs) for sample micro-extraction and pre-oncentration in bioanalytical and environmental applications are presented. The integration of both octadecylsilica (C18) micro-particulate and porous...
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In vivo characterisation of a catalase-based biosensor for real-time electrochemical monitoring of brain hydrogen peroxide in freely-moving animals.

RSC - Anal. Methods latest articles - Thu, 02/02/2017 - 13:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03066A, PaperSaidhbhe Labhaoise O'Riordan, John P Lowry
A catalase-based microelectrochemical biosensor developed for real-time neurochemical monitoring of hydrogen peroxide (H2O2) was characterised in freely-moving rats. The in situ sensitivity of the sensor was assessed by the direct...
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Exploiting aerosol dilution for determination of ultra-trace elements in honey by collision/reaction cell inductively coupled plasma mass spectrometry (CRC-ICP-MS) without thermal digestion

RSC - Anal. Methods latest articles - Thu, 02/02/2017 - 11:29
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03140D, PaperSerhat Doker
A rapid dilute-and-shoot procedure was described for ultra-trace determination of Li, Al, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Tl, Pb and U in honey by collision/reaction cell inductively...
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Direct speciation of Cr in drinking water by in-situ thermal separation ETAAS

RSC - Anal. Methods latest articles - Thu, 02/02/2017 - 08:29
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03223K, Technical NoteHao Cui, Wei Guo, Lanlan Jin, Qinghai Guo, S. H. Hu
In situ speciation of Cr(VI) and Cr(III) based on thermal separation and electrothermal atomic absorption spectrometry (ETAAS) detection has been developed. The complexant 2-thenoyltrifluoracetone (TTA) was used to selectively react...
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High efficiency screening of nine lipid-lowering adulterants in herbal dietary supplements by using thin layer chromatography coupled with surface enhanced Raman spectroscopy

RSC - Anal. Methods latest articles - Thu, 02/02/2017 - 06:28
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03441A, PaperQingxia Zhu, Mengyun Chen, Han Lu, Yongfang Yuan, Feng Lu
Adulteration of herbal dietary supplements (HDS) with undeclared synthetic drugs is a world-wide problem that pose a serious threat to human health. Methods ensuring the quality and safety of these...
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