Analytical Chemistry News

Fabrication of A Quinone Containing Layer on Gold Nanoparticles Directed To A Label-Free and Reagentless Electrochemical miRNAs Sensor

RSC - Anal. Methods latest articles - Mon, 04/10/2017 - 05:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00665A, PaperHoang Vinh TRAN, Nghia Duc Nguyen, Benoit Piro, Luyen Thi Tran
In this work, we report a simple electrochemical method to fabricate of label-free and reagentless electrochemical sensor for microRNAs detection based on self-assembly of a multifunctional layer on gold nanoparticles-modified...
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In-situ derivatization for double confirmation of 2C-C in oral fluids by ion mobility spectrometry

RSC - Anal. Methods latest articles - Mon, 04/10/2017 - 05:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00637C, PaperJuan Torres, Sergio Armenta, Francesc A. Esteve-Turrillas, Miguel de la Guardia
Ion mobility spectrometry (IMS) is a powerful tool to carry out quick and sensitive detection of illicit activities and has been employed for the determination of the psychedelic drug 2,5-dimethoxy-4...
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Rapid screening of pancreatic lipase inhibitors from Monascus-fermented rice by ultrafiltration liquid chromatography-mass spectrometry

RSC - Anal. Methods latest articles - Mon, 04/10/2017 - 05:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00777A, PaperYu-Xiang Fang, Song Huipeng, Jin-Xiu Liang, Ping Li, Hua Yang
Ultrafiltration liquid chromatography-mass spectrometry (UF-LC-MS), affinity-guided isolation, and molecular docking were integrated into one strategy for screening of enzyme inhibitors from functional foods. UF-LC-MS facilitated the rapid characterization of ligands...
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A user-friendly guide to the optimum ultraviolet photolithographic exposure and greyscale dose of SU-8 photoresist on common MEMS, microsystems, and microelectronics coatings and materials

RSC - Anal. Methods latest articles - Fri, 04/07/2017 - 09:56

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00564D, PaperMatthieu Gaudet, Steve Arscott
We provide here a user-friendly guide to find the optimum i-line (365 nm) photolithographic exposure dose of an arbitrary thickness of SU-8 on various substrate materials and thin film coatings used in MEMS, microsystems and microelectronics technologies: semiconductors, 2D materials (graphene and MoS2) plastics, glass, metals and ceramics.
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Analysis of changes in glycan composition of serum, cytosol and membrane glycoprotein biomarkers of colorectal cancer by lectin-based protein microarray

RSC - Anal. Methods latest articles - Fri, 04/07/2017 - 09:56
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00159B, PaperMartina Zamorova, Alena Holazova, Goran Miljus, Dragana Robajac, Milos Sunderic, Vesna Malenkovic, Blagoje Dukanovic, Peter Gemeiner, Jaroslav Katrlik, Olgica Nedic
The altered glycosylation of proteins is one of the cancer-related markers and monitoring of glycosylation status can significantly increase the informative value of protein biomarkers. Herein is presented the analytical...
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Simultaneous detection of three gynecological tumor biomarkers in clinic serum samples by ICP-MS based magnetic immunoassay

RSC - Anal. Methods latest articles - Thu, 04/06/2017 - 10:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00370F, PaperWeizhe Hong, Gongwei Sun, Yi Zhang, Zhi Xing, Biao Huang, Sichun Zhang, Xinrong Zhang
ICP-MS based multiplex immunoassay has the advantages of low sample consumption and minimized repetitions of tedious procedures. However, it is seldom used in clinical test because of the complicated matrix...
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Chiral separation of methadone in exhaled breath condensate using capillary electrophoresis

RSC - Anal. Methods latest articles - Thu, 04/06/2017 - 05:32

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00110J, PaperSamin Hamidi, Maryam Khoubnasabjafari, Khalil Ansarin, Vahid Jouyban-Gharamaleki, Abolghasem Jouyban
Breath analysis is a potential and non-invasive tool for monitoring drugs levels and the status of respiratory or systemic disorders and attracted more attentions in recent years.
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Analytical method for estimation of transfer and detection efficiencies of solid state explosive using ion mobility spectrometry and smear matrix

RSC - Anal. Methods latest articles - Wed, 04/05/2017 - 13:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00529F, PaperSung-Seen Choi, Chae Eun Son
Smearing method can be used as a simple and convenient sampling method for detection of trace explosive using portable ion mobility spectrometer (IMS) in the field such as security checks....
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A Visual Test Paper based on Pb(II) Metal-Organic Nanotube Utilized as H2S Sensor with High Selectivity and Sensitivity

RSC - Anal. Methods latest articles - Wed, 04/05/2017 - 10:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00627F, PaperXuelian Xin, Fangna Dai, Fugang Li, Xin Jin, Rongming Wang, Daofeng Sun
The fluorescent Pb(II)-metal-organic nanotube, CD-MONT-2, which possesses a large {Pb14} metallamacrocycle, is synthesized by a modified biphasic liquid-solid-liquid (BLSL) strategy. The strategy takes the advantage of solid cyclohexanol to avoid...
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An easier analysis of complex mixtures with highly resolved and sensitivity enhanced 2D quantitative NMR: application to tracking sugar phosphates in plants

RSC - Anal. Methods latest articles - Wed, 04/05/2017 - 10:16

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00316A, PaperSoumaya Khlifi, Caroline Mauve, Nathalie Glab, Francoise Gilard, Michael Hodges, Gregory Mouille, Jonathan Farjon
The combination of standard techniques with high resolution and sensitivity enhanced advanced techniques allowed for characterizing and quantifying sugar phosphates in plants biomarkers of photorespiration and photosynthesis in plants.
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Development and validation of a green chromatography for the determination of anthocyanins in haskap berry, mulberry and blackberry

RSC - Anal. Methods latest articles - Wed, 04/05/2017 - 09:15
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00229G, PaperJun Sang, Qun Ma, Cui-qin Li
This study aimed to develop and validate a green HPLC-DAD method to determine anthocyanins using ethanol and alpha-hydroxy acid aqueous solution as mobile phase. The effects of alpha-hydroxy acids on...
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One-step rapid synthesis of single thymine-templated fluorescent copper nanoclusters for "turn on" detection of Mn2+

RSC - Anal. Methods latest articles - Wed, 04/05/2017 - 08:15
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00625J, PaperBingyan Han, Rongchao Xiang, Xufen Hou, Mingbo Yu, Tingting Peng, Ying Li, Gaohong He
Rich-thymine (T) single- or double-strand DNAs have been identified as efficient templates favoring the formation of fluorescent copper nanoparticles (Cu NPs). In this work, we confirmed single base T could...
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Determination of anionic surfactants in real samples using a low-cost and high sensitive solid contact surfactant sensor with MWCNTs as the ion-to-electron transducer

RSC - Anal. Methods latest articles - Tue, 04/04/2017 - 07:07

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00099E, PaperNikola Sakac, Maja Karnas, Marija Jozanovic, Martina Medvidovic-Kosanovic, Sanja Martinez, Jelena Macan, Milan Sak-Bosnar
Long-life, low-cost and fast-response graphite pencil lead surfactant sensors based on MWCNTs.
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A simple microfluidic method for one-step encapsulation of reagents with varying concentrations in double emulsion drops for nanoliter-scale reactions and analyses

RSC - Anal. Methods latest articles - Tue, 04/04/2017 - 06:07
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00544J, PaperLikai Hou, Yukun Ren, Yankai Jia, Xiaokang Deng, Zheng Tang, Ye Tao, Hongyuan Jiang
This work reports a simple microfluidic method for one-step encapsulation of two reagents with varying concentrations in water-in-oil-in-water (W/O/W) double-emulsion drops. This method not only enables nanoliter-scale reactions and analyses...
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An "on-off-on" fluorescence assay based on silicon nanoparticles for selective detection of manganese (II)

RSC - Anal. Methods latest articles - Mon, 04/03/2017 - 12:55
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00514H, PaperLei Meng, Yaqing Yuan, Guang Pu, Na Xu
Highly blue luminescent and water-soluble silicon nanoparticles (Si NPs) are prepared by an efficient one-pot hydrothermal route from (3-aminopropyl) trimethoxysilane and ascorbic acid at 160 oC. The label-free Si NPs...
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Molecularly imprinted core-shell hybrid microspheres for the selective extraction of vanillin

RSC - Anal. Methods latest articles - Mon, 04/03/2017 - 12:55
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00461C, PaperRafael Fernandes, Mehmet Dinc, Ivo Raimundo Jr. , Boris Mizaikoff
Molecularly imprinted polymers (MIPs) with a core-shell structure for efficient, reliable, and selective extraction of vanillin via solid-phase extraction (SPE) and incubation methods were developed using a sol-gel process based...
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Factorial design effects of plant density, pattern and light availability on the caffeine, chlorogenic acids, lipids, reducing sugars and ash contents of Coffea arabica L. beans and leaves

RSC - Anal. Methods latest articles - Fri, 03/31/2017 - 07:09
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00721C, PaperFernanda Delaroza, Miroslava Rakocevic, Galileu Bernardes Malta, Patricia Morena Sanchez, Roy E Bruns, Ieda Spacino Scarminio
Factorial design experiments were executed to determine the effects of plant pattern and density as well as the degree of light availability on the caffeine, chlorogenic acids, lipids, reducing sugars...
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An ultrasensitive "turn-off" SERS sensor for quantitatively detecting heparin based on 4-mercaptobenzoic acid functionalized gold nanoparticles

RSC - Anal. Methods latest articles - Thu, 03/30/2017 - 08:02
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00494J, PaperChen-Meng Zhang, Xiu Liang, Ting-Ting You, Nan Yang, Yu-Kun Gao, Peng-gang Yin
An ultrasensitive "turn off" Surface Enhanced Raman Spectroscopy (SERS) sensor was developed for detection of heparin based on the anti-aggregation of 4-mercaptobenzoic stabilized gold nanoparticles. In this paper, protamine, a...
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Rapid simultaneous extraction and magnetic particles-based enzyme inmunoassay parallel determination of ochratoxin A, fumonisin B1 and deoxynivalenol mycotoxins in cereal samples

RSC - Anal. Methods latest articles - Thu, 03/30/2017 - 06:01
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00386B, PaperJuan C. Vidal, Juan R. Bertolin, Alba Ezquerra, Susana Hernandez, Juan R Castillo
This work describes the development of a rapid method for the extraction and the immunochemical determination of the three mycotoxins deoxinivalenol, fumonisin B1, and ochratoxin A, which are frequently found...
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A pyrene-based fast responsive fluorescent probe for G-quadruplexes

RSC - Anal. Methods latest articles - Tue, 03/28/2017 - 13:38
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00556C, CommunicationXiao-Qi Yu, Chuang Jiang, Ling-Ling Li
A novel and efficient pyrene-based fluorescent probe (PBT) was found to be fast responsive and selective towards G-quadruplexes (G4). PBT exhibited opposite fluorescent variation tendency when binding to G4 and...
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