Analytical Chemistry News

Fast simultaneous detection of three diterpenoids in Herba Siegesbeckiae using solid phase extraction followed by HPLC-UV with core-shell particle column

RSC - Anal. Methods latest articles - Mon, 02/12/2018 - 10:45
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00046H, PaperYong Zhang, Zhizhong Zou, Guixin Chou
To determine the kirenol, darutoside and darutigenol in Herba Siegesbeckiae within HPLC quickly, the ability of sample cleanup with different solid phase extraction was systematically investigated. The results showed that...
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Guanidinium ionic liquid-based surfactant as adequate solvent to separate and preconcentrate cadmium and copper in waters using in-situ dispersive liquid-liquid microextraction

RSC - Anal. Methods latest articles - Sun, 02/11/2018 - 22:37
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00022K, PaperMeriem Khiat, Idaira Pacheco-Fernandez, Veronica Pino, Tayeb Benabdallah, Juan H. Ayala, Ana M. Afonso
An in-situ dispersive liquid-liquid microextraction (DLLME) method together with flame atomic absorption spectroscopy (FAAS) is developed for the extraction and determination of copper and cadmium from aqueous samples using as...
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Authenticity assessment of anabolic androgenic steroids in counterfeit drugs by 1H NMR

RSC - Anal. Methods latest articles - Sun, 02/11/2018 - 22:37
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00158H, PaperMarcos Vinicuis de Moura Ribeiro, Nivaldo Boralle, Helena Redigolo Pezza, LEONARDO PEZZA
Anabolic steroids are synthetic hormone derivatives of testosterone, a masculine sex hormone. Their main effects include greater muscle size, physical strength, and resistance. The need for safe and reliable quality...
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New and simple electroanalytical method useful for detecting thiomersal in vaccines on a screen-printed electrode modified with chitosan

RSC - Anal. Methods latest articles - Sun, 02/11/2018 - 22:37
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00161H, PaperEdgar Nagles, Camila Gonzales, Olimpo Garcia-Beltran
The use of a screen-printed electrode modified with chitosan (Cs) to determine thiomersal (TMS) through the oxidation of the thiosalicylic acid by linear sweep anodic stripping voltammetry is reported for...
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Simultaneous determination of rifampicin, isoniazid, pyrazinamide and ethambutol in fixed dose combination antituberculosis pharmaceutical formulations: a review

RSC - Anal. Methods latest articles - Sun, 02/11/2018 - 22:37
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02686B, Critical ReviewMarcone Augusto Leal de Oliveira, Paula Chellini, Tatiane Lima Amorim
According to the World Health Organization, rifampicin, isoniazid, pyrazinamide and ethambutol hydrochloride are the first line drugs used to treat tuberculosis, an infectious disease caused by Mycobacterium tuberculosis. Since 2010,...
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A Novel IMAC Platform-Adenosine Coupled Functional Magnetic Microspheres for Phosphoproteome Research

RSC - Anal. Methods latest articles - Sun, 02/11/2018 - 22:37
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02931D, PaperYinghua Yan, Yujie Lu, Mengying Chen, Hongze Liang Liang
Immobilized metal affinity chromatography is a powerful method in phosphopeptide enrichment. However, the achievement of highly specific enrichment and sensitive detection of phosphopeptide by this method remains a big challenge...
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Designed multifunctional ionic liquids-magnetic graphene nanocomposites as the adsorbentn of MSPE for the determination of preservatives

RSC - Anal. Methods latest articles - Sun, 02/11/2018 - 22:37
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02746J, PaperShurui Cao, Yaling Chen, Lei Zhang, Cunxian Xi, xianliang li, Bobin Tang, guomin wang, Zhiqiong Chen
A new structural design of four kinds of ionic liquids were successfully fabricated, which was based on changing the anion of 1-vinyl-3-octylimidazolium bromide (VOIm+Br-) with benzene sulfonic acid (BenSO3-), 2-naphthalene...
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The doping level of boron-doped diamond electrodes affects the voltammetric sensing of[space]uric acid

RSC - Anal. Methods latest articles - Fri, 02/09/2018 - 10:20

Anal. Methods, 2018, Advance Article
DOI: 10.1039/C7AY02720F, PaperK. Cinkova, K. Kianickova, D. M. Stankovic, M. Vojs, M. Marton, L. Svorc
In this work, the electrochemical oxidation and subsequent determination of uric acid was investigated using boron-doped diamond electrodes with various B/C ratios (0-2000 ppm).
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Quantitative analysis of sinters using laser-induced breakdown spectroscopy (LIBS) coupled with kernel-based extreme learning machine(K-ELM)

RSC - Anal. Methods latest articles - Thu, 02/08/2018 - 20:05
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02748F, PaperYu Ding, Fei Yan, Guang Yang, Haixiu Chen, Zhensheng Song
This work explores the combination of LIBS technology and K-ELM algorithm for the quantitative analysis of total iron(TFe) content and alkalinity of sinter. The main components of sinter ore samples...
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Simultaneous determination of fifteen toxic alkaloids in meat dishes and vegetable dishes using double layer pipette tip magnetic dispersive solid phase extraction followed by UFLC-MS/MS

RSC - Anal. Methods latest articles - Thu, 02/08/2018 - 20:05
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02608K, PaperHeli Cheng, Fenglian Wang, Yong-Gang Zhao, Yun Zhang, Mi-Cong Jin, Yan Zhu
A novel double layer pipette tip magnetic dispersive solid phase extraction (DPT-MSPE) based on polyamidoamine-functionalized magnetic carbon nanotubes (PAMAM@Mag-CNTs) was developed for the purification of fifteen toxic alkaloids in meat...
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Endonuclease Restriction-Mediated Real-Time PCR for Simultaneous Detection of Listeria monocytogenes and Listeria ivanovii

RSC - Anal. Methods latest articles - Tue, 02/06/2018 - 20:02
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02667F, PaperYan Wang, Yi Wang, Changyun Ye
Listeria monocytogenes and Listeria ivanovii have been identified as the only two pathogenic species in Listeria genus. Food contamination with L. monocytogenes was a severe public health issues accompanied with...
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Fast and sensitive low density solvent based dispersive liquid-liquid microextraction method combined with high-performance liquid chromatography for determining cholecalciferol (vitamin D3) in milk and yogurt drink samples

RSC - Anal. Methods latest articles - Tue, 02/06/2018 - 20:02
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02915B, PaperMarzieh Kamankesh, Mehrnoosh Shahdoostkhany, Abdorreza Mohammadi, Afsaneh Mollahosseini
In this research, low density solvent based dispersive liquid-liquid microextraction (LDS-DLLME) as a simple, fast and efficient microextracton method followed by high-performance liquid chromatography was employed to determine cholecalciferol (vitamin...
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Quantification of Carbon Nanotubes in Polymer Composites

RSC - Anal. Methods latest articles - Tue, 02/06/2018 - 06:44
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02654D, PaperTakayuki Nosaka, Ronald Lankone, Yuqiang Bi, Howard Fairbrother, Paul Westerhoff, Pierre Herckes
Quantifying carbonaceous nanomaterials (CNMs) has largely been limited to soil, water or biological matrices, but the largest application of CNMs is carbon nanotubes (CNTs) embedded in polymers or plastics. This...
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Rapid Discrimination of Natural Polyphenols (Vegetable Tannins) from Different Plants by Molecular Spectroscopy and PLS-DA

RSC - Anal. Methods latest articles - Mon, 02/05/2018 - 20:33
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00075A, PaperFabio dos Santos Grasel, Marco Flores Ferrao
In this work, samples of natural polyphenolic extracts, representing six commercially available types, were analysed by visible, ultraviolet and Fourier transform infrared (FTIR) spectroscopy with classification technique. Classification model was...
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Fatty acid profile of stinging nettle leaves: application of modern analytical procedures for sample preparation and analysis

RSC - Anal. Methods latest articles - Mon, 02/05/2018 - 20:33
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02559A, PaperSasa Durovic, Zoran Zekovic, Sasa Sorgic, Sasa Popov, Milena Vujanovic, Marija Radojkovic
Stinging nettle is perennial plant with significant biological activity and long history of application in folk medicine and as a food. Such activity is ascribed to its chemical composition. Among...
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Highly selective, rapid and sensitive fluorescent test paper based on graphene quantum dots for on-line detection of metal ion

RSC - Anal. Methods latest articles - Mon, 02/05/2018 - 20:33
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02995K, PaperChongxu Wang, youyi sun, Jinli Jin, zhiyuan xiong, dan li, Junru Yao, yaqing liu
In this work, the test paper based on N-doped graphene quantum dots and graphene quantum dots were designed and prepared. They exhibited a highly selective fluorescence quenching response to Hg(II)...
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Electrochemical aptasensor based on aptamer-complimentary strand conjugate and thionine for sensitive detection of tetracycline with multi-walled carbon nanotubes and gold nanoparticles amplification

RSC - Anal. Methods latest articles - Mon, 02/05/2018 - 04:08

Anal. Methods, 2018, Advance Article
DOI: 10.1039/C7AY02728A, PaperBao-Shan He, Sa-sa Yan
Herein, a novel aptasensor with thionine as the electroactive probe was fabricated for the sensitive detection of tetracycline (TET).
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Optical probes, theranostics and optogenetics shed light on zebrafish (Danio rerio)

RSC - Anal. Methods latest articles - Sun, 02/04/2018 - 22:56
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02799K, Critical ReviewXiang Li, Minyong Li
Conventional analytical methods concerning the synthetic fluorescent probes have been extensively applied in the detection and visualization of biologically relevant chemical spices. Recently, with the rapid evolvement of chemical synthesis...
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A novel non-targeted screening method for urinary exposure biomarker discovery of phthalates with liquid chromatography-mass spectrometry

RSC - Anal. Methods latest articles - Sun, 02/04/2018 - 22:56
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02941A, PaperChunhe Yao, Jianhua Wang, Peter Chan, Yong-lai Feng
Phthalates are a group of compounds widely used in consumer products and they are ubiquitous in the environment due to widespread commercial use. In this study, a new non-targeted screening...
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Simultaneous determination of hydroquinone and catechol using a glassy carbon electrode modified with Au@Pd loaded on reduced graphene oxide

RSC - Anal. Methods latest articles - Fri, 02/02/2018 - 11:23
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02718D, PaperHuijuan Wang, Siyu Zhang, Shufang Li, Jianying Qu
Au@Pd core-shell nanoplates were synthesized successfully through the heterogeneous, epitaxial growth of Au on Pd nanoplates. The Pd nanoplates were prepared by reducing H2PdCl4 with PVP, then served as seeds...
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