Analytical Chemistry News

Correction: Target-induced duplex-triplex transition for ratiometric detection of adenosine triphosphate

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90139A, Correction Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Shujuan Yao, Yanhua Gao, Wen Wang, Donghua Ni, Kaixian Zhang, Ling Li, Jianqiang Du, Xiujuan Cui
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Rapid derivatization and extraction of paraben preservatives by fast syringe-assisted liquid-liquid microextraction and their determination in cosmetic and aqueous sample solutions by gas chromatography

RSC - Anal. Methods latest articles - Mon, 10/16/2017 - 06:17

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY01375B, PaperMaryam Rajabi, Alireza Sarhadi, Mohammad Bazregar, Alireza Asghari, Ehsan Mirparizi
In this work, a very rapid method is developed for the simultaneous derivatization and extraction of some parabens in aqueous sample solutions.
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A novel polydentate Schiff-base derivative developed for multi-wavelength colorimetric differentiation of trace Fe2+ from Fe3+

RSC - Anal. Methods latest articles - Sun, 10/15/2017 - 23:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY02167D, PaperZhengquan Yan, Yanjie Zhu, Jie Xu, Chong Wang, Pengyue Li, Yuyu Zheng, Lei Hu, Jinmao You
A novel Schiff-base derivative containing polydentate ligands, N-2'-hydroxyl-1'- naphthyl methylene-3-hydroxyl-2-amino pyridine (NNAP), was identified and developed. After its structure was characterized by FTIR, 1H NMR, mass spectra and element analyses,...
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The combination of NIR spectroscopy and HPLC chromatography for differentiating Lotus seed cultivars and quantitative predicting of four main constituents in Lotus with the aid of chemometrics

RSC - Anal. Methods latest articles - Sun, 10/15/2017 - 23:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY02021J, PaperYing Guo, Xiaoxiao Ding, Yongnian Ni
Lotus has being widely cultivated and consumed in Asia, Oceania and America, and it is not only used as an ornamental plant but also as a dietary staple. In this...
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A Highly Selective and Sensitive Fluorescence Sensor for the Detection of Apigenin based on Nitrogen Doped Carbon Dots and its application in cell imaging

RSC - Anal. Methods latest articles - Sun, 10/15/2017 - 23:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY02202F, PaperJing Li, Jinping Song, Xiaomin Liang, Qi Ma, La Shen, Yong Guo, Feng Feng
A highly selective and sensitive fluorescence detection platform based on nitrogen doped carbon dots (N-CDs) is firstly developed for the determination of apigenin (Api) in celery. N-CDs was obtained by...
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A dual-mode nanosensor based on the inner filter effect of gold nanoparticles on the fluorescence of CdS quantum dots for sensitive detection of arginine

RSC - Anal. Methods latest articles - Sun, 10/15/2017 - 23:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01785E, PaperSomayyeh Khezri, Morteza Bahram, Naser Samadi
In this work, we developed a low-cost, rapid, simple and sensitive analytical method for the visual and fluorescent detection of arginine based on the inner filter effect (IFE) of gold...
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A Simple Technique to Design Microfluidic Devices for System Integration

RSC - Anal. Methods latest articles - Sun, 10/15/2017 - 23:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY02177A, PaperMimi Xuan Yang, Benjamin Wang, Xiaolin Hu, Philip H. S. Wong
We present a robust method to fabricate a polydimethyliloxane (PDMS) microfluidic device with critical channel features located near the periphery. The fabricated device has a window cutout, allowing close placement...
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Chromatographic unsupervised classification of olive and non-olive oil samples with the aid of Graph Theory

RSC - Anal. Methods latest articles - Thu, 10/12/2017 - 21:11
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01828B, PaperKeshav Kumar
Graph theory is a tool originated from the discrete mathematics. A graph essentially consists of two fundamental units, nodes and edges. The nodes represent the samples and edges describe their...
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Highly sensitive surface-enhanced Raman scattering detection of adenosine triphosphate based on core-satellite assemblies

RSC - Anal. Methods latest articles - Thu, 10/12/2017 - 21:11
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY02096A, PaperYa-Fei Tian, Wen Zhou, Bin-Cheng Yin, Bang-Ce Ye
As an important small molecule, adenosine triphosphate (ATP) plays an important role in the regulation of cell metabolism and supplies energy for various biochemical reactions in organisms. We herein developed...
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Ligand identification of the adenosine A2A receptor in self-assembled nanodiscs by affinity mass spectrometry

RSC - Anal. Methods latest articles - Thu, 10/12/2017 - 09:10

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY01891F, PaperJun Ma, Yan Lu, Dong Wu, Yao Peng, Wendy Loa-Kum-Cheung, Chao Peng, Ronald J. Quinn, Wenqing Shui, Zhi-Jie Liu
The combination of nanodisc and affinity LC/MS techniques potentiates the high-throughput screening against GPCRs.
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A selective nanosensor for ultrafast detection of Cu2+ ions based on C5 DNA-templated gold nanoclusters and Fenton-like reaction

RSC - Anal. Methods latest articles - Wed, 10/11/2017 - 20:10
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY02247F, PaperTaiping Qing, Hongchang Bu, Xiaoxiao He, Dinggeng He, Bing Zhou, Huanhuan Sun, Ruichen Jia, Wenjie Ma, Kemin Wang
Copper pollution has become a very serious problem in modern society as the increasing industrial emission and the acid mine drainage. Copper deficiency or excess copper accumulate in human and...
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Microprofiling real time nitric oxide flux for field studies using a stratified nanohybrid carbon-metal electrode

RSC - Anal. Methods latest articles - Wed, 10/11/2017 - 20:10
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01964E, PaperPrachee Chaturvedi, Diana C Vanegas, Bernie A Hauser, Jamie S. Foster, Maria Soledad Sepulveda, Eric S McLamore
Nitric oxide (NO) is an important signaling molecule that is involved in stress response, homeostasis, host defense, and cell development. In most cells, NO levels are in the femtomolar to...
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Are my data normal?

RSC - Anal. Methods latest articles - Wed, 10/11/2017 - 10:29

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90126G, AMC Technical Brief Analytical Methods Committee AMCTB No. 82
The normal distribution is the expected outcome when a result stems from numerous stages of the measurement process, each of which introduces a small independent error. Sometimes we need to test whether a dataset complies with that expectation.
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Should analytical chemists (and their customers) trust the normal distribution?

RSC - Anal. Methods latest articles - Wed, 10/11/2017 - 09:19

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90138K, EditorialMichael Thompson
Mike Thompson considers the normal distribution.
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An Ultrasensitive Sandwich Immunoassay with Glucometer Readout for Portable and Quantitative Detection of Cronobacter Sakazakii

RSC - Anal. Methods latest articles - Wed, 10/11/2017 - 00:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY02222K, PaperLingxian Ye, Guangying Zhao, Wenchao Dou
Developing portable and low-cost methods for quantitative detection of Cronobacter sakazakii (C. sakazakii) from powdered infant formula plays a significant role in controlling and preventing a range of serious neonatal...
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Highly sensitive and label-free determination of thiram residue using surface-enhanced Raman spectroscopy (SERS) coupled with paper-based microfluidics

RSC - Anal. Methods latest articles - Wed, 10/11/2017 - 00:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01637A, PaperJiaji Zhu, Quansheng Chen, Felix Kutsanedzie, Mingxiu Yang, Qin Ouyang, Hui Jiang
In this study, a paper-based microfluidic surface-enhanced Raman spectroscopy (SERS) device was employed for the determination of trace level thiram. The paper-based microfluidic device was fabricated by cutting hydrophilic region...
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Chemical state and isotope ratio analysis of individual uranium particles by a combination of micro-Raman spectroscopy and secondary ion mass spectrometry

RSC - Anal. Methods latest articles - Tue, 10/10/2017 - 20:28
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01815K, PaperTakumi Yomogida, Fumitaka Esaka, Masaaki Magara
An analytical procedure using micro-Raman spectroscopy (MRS) and secondary ion mass spectrometry (SIMS) was developed to elucidate both chemical states and isotope ratios of individual micron-sized uranium particles. Each uranium...
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High Performance Liquid Chromatography coupled to Electrospray Ionisation Mass Spectrometry method for the detection of salivary human neutrophil alpha defensins HNP1, HNP2, HNP3 and HNP4

RSC - Anal. Methods latest articles - Mon, 10/09/2017 - 21:15
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01676J, PaperNadia Ashrafi, C Lapthorn, Frank Pullen, F Naclerio, Birthe Vejby Vejby Nielsen
Human neutrophil alpha defensins are antimicrobial peptides involved in the first line of defence against invading pathogens. To develop a deeper understanding of the immune responses in relation to airway...
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A Highly Selective Schiff Base Fluorescent Chemosensor for Lu3+

RSC - Anal. Methods latest articles - Mon, 10/09/2017 - 20:12
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01808H, PaperLina Wang, Juanjuan Tang, Ning Sui, Xing Yang, Luyao Zhang, Xiaojun Yao, Qinfei Zhou, Hailian Xiao, ShaoPing Kuang, William Yu
A Schiff base derivative, N-(3-methoxy-4-hydroxybenzylidene)salicyloylhydrazone (L) shows high selectivity to Lu3+ not only in abiotic systems but also in living cells with fluorescence. The presence of PVP can increase the...
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Determination of agrochemical multi-residues in grapes. Identification and confirmation by gas chromatography-mass spectrometry

RSC - Anal. Methods latest articles - Mon, 10/09/2017 - 05:43

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY01448A, PaperViviane G. Lima, Vania P. Campos, Thiago C. Santana, Franciele O. Santana, Tadeu A. C. Costa
The valley of the Sao Francisco river, northeastern Brazil, is home to the major mango and grape producers of Brazil, many of which already export to foreign markets.
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