Analytical Chemistry News

Pre-concentration and determination of cadmium and lead ions in real water, soil and food samples using a simple and sensitive green solvent-based ultrasonic assisted dispersive liquid-liquid microextraction and graphite furnace atomic absorption...

RSC - Anal. Methods latest articles - Mon, 04/23/2018 - 07:10

Anal. Methods, 2018, Advance Article
DOI: 10.1039/C8AY00398J, PaperMahdi Ghorbani, Samaneh Akbarzade, Mohsen Aghamohammadhasan, Orkideh Seyedin, Nahid Afshar Lahoori
A green solvent-based ultrasonic assisted dispersive liquid-liquid microextraction (GS-UADLLME) was developed for preconcentration of cadmium and lead ions from various real water, soil and food samples.
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Dual-functional imprinted magnetic nanoprobes for fluorescent detection of N-Nitrosodiphenylamine

RSC - Anal. Methods latest articles - Mon, 04/23/2018 - 03:09
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00584B, PaperYufeng Hu, Jie Liu, Junyu Li, Tao Chen, Minghuo Wu
Fluorescent magnetic molecularly imprinted polymers (FMMIPs) were prepared in a one-pot sol-gel polymerization process using Mn-doped ZnS quantum dots (QDs) as a fluorescent core, N-Nitrosodiphenylamine (NDPhA) as a template, (3-aminopropyl)...
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Novel competitive-displacement fluorescent assay for L-Penicillamine based on reaction between target and N-acetyl-L-cysteine-capped CdTe quantum dots for copper ion

RSC - Anal. Methods latest articles - Mon, 04/23/2018 - 02:09
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00515J, PaperYunmei Huang, Jidong Yang, Haiyan Yuan, Yuan Guo, Xiaoqing Zeng, JiaWei Cheng, YuHui Zhang
D-Penicillamine (below for short D-PA) as a dominant enantiomer is usually used in many clinic drugs but L-Penicillamine (L-PA) is another toxic enantiomer. So it is of great significance to...
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Novel porous silica monolithic functionalized with 5-amino-1,10-phenanthroline for SPE of metal ions in ground wate samples prior to their analysis by ICP-MS

RSC - Anal. Methods latest articles - Sat, 04/21/2018 - 06:00
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00442K, PaperImran - Ali, Awadh O. AlSuhaimi, Khaled M. AlMohaimadi, Bader N. AlAlawi
Porous silica monoliths are gaining favorable applications in separation science due to their inborn characteristics such as rigid skeleton, large surface area, affordable starting materials and straight forward sol gel...
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Determination of Chemical Composition in Multilayers Polymer Film using ToF-SIMS

RSC - Anal. Methods latest articles - Fri, 04/20/2018 - 10:40
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00344K, PaperChuanzhen Zhou, Dayong Sun, Roberto Garcia, Fred Stevie
Time-of-flight secondary ion mass spectrometry is a widely used surface analytical technique, which can provide chemical information from both the uppermost surface and underneath the surface for various materials. For...
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AIEE active SDS stabilized 2-naphthol nanoparticles as a novel fluorescent sensor for selective recognition of Crystal violet: Application to Environmental analysis

RSC - Anal. Methods latest articles - Fri, 04/20/2018 - 07:38
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00328A, PaperDattatray Krishna Dalavi, Sonali B Suryawanshi, Govind B. Kolekar, Shivajirao Raghunath Patil
Fluorescent nanoparticles of sodium dodecyl sulfate stabilized 2-naphthol (SDS-2-NNPs) were prepared using the way of reprecipitation method and exhibited aggregation-induced enhanced emission (AIEE) at 410 nm. A novel spectrofluorimetric method...
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Discrimination of positional isomers by ion mobility mass spectrometry: Application to organic semiconductors

RSC - Anal. Methods latest articles - Fri, 04/20/2018 - 04:35
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00568K, CommunicationQuentin Duez, Maxime Romain, Corentin Tonneaux, Julien De Winter, Vincent Lemaur, Jerome Cornil, Cyril Poriel, Pascal Gerbaux
Organic semiconductors are increasingly used in organic-based opto-electronic devices. Since regioselective synthetic approaches are not always controlled, promising compounds are sometimes prepared following non-regioselective routes. Ion Mobility Mass Spectrometry is...
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A comparison of structural-functional equation models to identify fatty acids on three common gas chromatography columns

RSC - Anal. Methods latest articles - Thu, 04/19/2018 - 10:12

Anal. Methods, 2018, 10,1747-1759
DOI: 10.1039/C7AY02456H, PaperA. T. L. Wotherspoon, K. L. Reeves, J. Crawford
Reported herein is a series of new structural-functional relationship equations which provide relevant structural information of unknown fatty acid methyl esters (double-bonds, chain-length, and omega-bond position) based upon temperature induced shifts in equivalent chain length's (ECLs).
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Non-chromatographic separation and determination of thimerosal and inorganic mercury in vaccine by Fe3+-induced degradation with cold vapor atomic fluorescence spectrometry

RSC - Anal. Methods latest articles - Thu, 04/19/2018 - 04:02
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00284C, PaperQi Xu, Zhenhua Wang, Linghe Jin, Peng Liu, Yuan Tian, Sheng-xiao Zhang, Changqiao Zhang
An effective, rapid and inexpensive method without chromatographic separation was proposed for determination of thimerosal (THM) and inorganic mercury (IHg) in the vaccine samples, based on Fe3+-induced degradation of THM...
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Comparison of computational approaches for identification and quantification of urinary metabolites in 1H NMR spectra

RSC - Anal. Methods latest articles - Wed, 04/18/2018 - 13:38
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00830B, PaperMarc Cassiede, Pascal Mercier, Paul R. Shipley, Meghan Dueck, Samineh Kamravaei, Sindhu Gopinathan Nair, James Mino, Lei Pei, David Broadhurst, Paige Lacy , Bernadette Quemerais
Nuclear magnetic resonance (NMR) spectroscopy is extensively used in analytical chemistry as a powerful, non-invasive, and non-destructive tool to elucidate detailed structures of small molecules in complex mixtures. A major...
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Regional feature extraction of various fishes based on chemical and microbial variable selection using machine learning

RSC - Anal. Methods latest articles - Mon, 04/16/2018 - 09:28
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00377G, Paper Open Access &nbsp This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Taiga Asakura, Kenji Sakata, Yasuhiro Date, Jun Kikuchi
We introduce a method for extracting regional and habitat features in various species fish based on chemical and microbial correlations that incorporate integrated analysis and a variable selection approach. We...
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Electrochemical sensing of NBOMes and other new psychoactive substances in blotting paper by square-wave voltammetry on boron-doped diamond electrode

RSC - Anal. Methods latest articles - Mon, 04/16/2018 - 08:26
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00385H, PaperGlayton Andrade, Dilton Martins Pimentel, Amanda Lima, Tiago J. Guedes, Luciano Arantes, Anderson Oliveira, Raquel M. F. Sousa, Wallans T. P. dos Santos, Rodrigo Alejandro Abarza Munoz
The electrochemical quantification of new psychoactive substances (NPS), 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamines, commonly described as NBOMes and their correlates, 2,5-dimethoxy phenethylamine structures (2C-X groups), in seized blotting paper is presented using square-wave...
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Identification of odorous constituents for Southern yellow pine and China fir woods: Effects of extractives removal

RSC - Anal. Methods latest articles - Mon, 04/16/2018 - 03:22
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02885G, PaperRu Liu, Chen Wang, Anmin Huang, Bin Lv
In this study, the odors of two types of softwood species, namely, Southern yellow pine (Pinus spp.) and China fir (Cunninghamia lanceolata (Lamb.) Hook.) were selected and extracted with ethanol-toluene...
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Split aptamer-based imaging solution for visualization of latent fingerprints

RSC - Anal. Methods latest articles - Sun, 04/15/2018 - 22:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00538A, PaperXiaojuan Liu, Xiuyuan Li, Yingying Lu, Jiabing Cao, Feng Li
An efficient method for detecting latent fingerprints (LFPs) is very important for personal identification in forensic science. Herein, a simple label-free strategy was designed for the visualization of LFPs by...
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Key factors in FTIR spectroscopic analysis of DNA: the sampling technique, pretreatment temperature and sample concentration

RSC - Anal. Methods latest articles - Sun, 04/15/2018 - 22:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00386F, PaperYahong Han, Lujia Han, Yumei Yao, Yanfei Li, Xian Liu
Fourier transform infrared (FTIR) spectroscopy has been considered as a powerful tool for analysing the characteristics of deoxyribonucleic acid (DNA) regardless of physical states, sample amounts and the molecular weight...
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Sensitive electrochemical sensor for ofloxacin based on graphene/ zinc oxide composite film

RSC - Anal. Methods latest articles - Thu, 04/12/2018 - 04:35
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00127H, PaperXiaojing Si, Youli Wei, Chaolin Wang, Li Li, Yaping Ding
A facile and novel preparation strategy based on electrochemical techniques for the fabrication of electrodeposited graphene (GR) and zinc oxide (ZnO) nanocomposite modified electrode (ZnO/GR/GCE) was developed to determine ofloxacin....
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Highly selective and sensitive optical probe for Fe3+ base on a well water-soluble squarylium dye

RSC - Anal. Methods latest articles - Thu, 04/12/2018 - 02:33
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02948A, PaperZongguang Xu, Mengying Jiang, Chen Zhang, Jinfeng Mei, Zhongyu Li, Song Xu, Liping Wang
A highly selective and sensitive water-soluble optical probe based on a squarylium dye, 2,3,3-Trimethyl-3H-indolenine-5-sulfonate squaraine (SQ) has been successfully synthesized. The as-prepared SQ can efficiently recognize Iron (III) ion with...
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A Novel Method for the Presumptive Identification of Heterocyclic Amines of Forensic Interest Using Photoluminescent Copper(I) Iodide Cluster Compounds

RSC - Anal. Methods latest articles - Tue, 04/10/2018 - 09:57
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00227D, PaperDavid J Nash, Deepti Siddhanti, Amanda F Wendt, Rachel A Penabade, Kevin Bertrand, Andilys Andino, Krisia Smith, Sandra M Hick, Kyle Kawamoto, Andrea C Ortiz, Francisco Sepulveda, Wayne K Moorehead, Jay R Vargas, Richard G Blair
The use of color tests for the presumptive identification of illicit substances has been an important tool used by law enforcement to establish probable cause for decades. However, recently color...
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Simple "turn-on" fluorescent biosensor for sensitive detection of exonuclease III activity through photoinduced electron transfer and self-hybridization of one DNA probe

RSC - Anal. Methods latest articles - Tue, 04/10/2018 - 03:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00631H, PaperQiang Liu, Jinyu Lian, Mei Liu, Yan Jin, Baoxin Li
Exonuclease III (Exo III) plays crucial roles in maintaining the genome stability. Herein, a turn-on fluorescent strategy for detection of Exo III activity is developed. In this strategy, one poly(CG)...
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Exploring MBTH as spectrophotometric probe for total phenolic compounds determination in beverage samples

RSC - Anal. Methods latest articles - Tue, 04/10/2018 - 01:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00464A, PaperBruna da Silva Granja, Jose Ricardo Honorio de Mendonca Filho, Woodland de Souza Oliveira, Josue Carinhanha
In this work, we propose an alternative method using MBTH (3-methyl-2-benzothiazolinone hydrazine) as spectrophotometric probe for the determination of total phenolic compounds. The method is based on oxidative coupling reaction...
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