Analytical Chemistry News

Development of an analytical method for the determination of n-nitrosamines in tobacco by GC-NCD after solid phase extraction.

RSC - Anal. Methods latest articles - Tue, 03/14/2017 - 04:57
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00577F, PaperFabiana Araujo Soares, Simone Carvalho Chiapetta, Wagner Felippe Pacheco
In this paper an analytical method was developed for the determination of some tobacco specific n-nitrosamines (TSNA) in cigarettes, and applied to cigarettes purchased in the city of Rio de...
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Aptamer-based biosensors for detection of lead(II) ion: a review

RSC - Anal. Methods latest articles - Mon, 03/13/2017 - 13:49
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00477J, Critical ReviewDanxing Yang, Xiaocheng Liu, Yaoyu Zhou, Lin Luo, Jiachao Zhang, Anqi Huang, Qiming Mao, Xiao Chen, Lin Tang
Lead(II) ion (Pb2+) contamination can be accumulated along the food chain and cause serious threat to the public health. Plenty of research effort thus has been devoted to the development...
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A Simple Method for Simultaneous Determination of Acetaldehyde, Acetone, Methanol, and Ethanol in the Atmosphere and Natural Waters

RSC - Anal. Methods latest articles - Mon, 03/13/2017 - 08:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00306D, Technical NoteFernanda Furlan Giubbina, Caroline Scaramboni, Bruno Spinosa De Martinis, Daniely Godoy-Silva, Raquel F Pupo Nogueira, Maria Lucia Arruda Moura Campos
Although there has been a dramatic increase on the use of ethanol fuel in several countries, there is a great lack of data related to the abundance of this alcohol...
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Sensitive magnetic dispersive solid-phase extraction using hydrophobic magnetic nanoparticles and GC-MS analysis for determination of sterol composition in milk samples for detection of palm oil

RSC - Anal. Methods latest articles - Mon, 03/13/2017 - 08:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00459A, PaperDavood Bigdelifam, Mahdi Hashemi, Parvin Zohrabi, Mahdiyeh Sadeghpour , Ehsan Radaee
In this study, a simple and reliable method based on the dispersive magnetic solid phase extraction (DMSPE) with modified magnetic nanoparticle followed by gas chromatography-mass spectrometry (GC-MS) has been developed...
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A simple modified electrode based on MIL-53(Fe) for the highly sensitive detection of hydrogen peroxide and nitrite

RSC - Anal. Methods latest articles - Mon, 03/13/2017 - 08:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03164A, PaperDan Cheng, Xi Li, Yan Qiu, Qi Chen, Jian Zhou, qin Yu Yang, Zhizhong Xie, Peng Liu, Weiquan Cai, Chaocan Zhang
A modification matrix of iron terephthalate metal-organic framework (MIL-53(Fe)) as a simple and efficient electroactive material for the electrochemical biosensor was investigated. The morphology and structure of MIL-53(Fe) were characterized...
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Strategizing method optimization of microwave assisted extraction of plant phenolics by developing standard working principles for universal robust optimization

RSC - Anal. Methods latest articles - Mon, 03/13/2017 - 06:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00098G, PaperVivekananda Mandal, Harneet Kala, Kamal Kumar Sen, Rajendra Mehta, Roshni Tandey
The articles focuses to ease the optimization of microwave assisted extraction of phenolics from leaves by proposing some basic check point or riders which shall provide relief for beginners and...
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Feasible photometric measurements in liquid-liquid extraction by exploiting smartphone-based digital images

RSC - Anal. Methods latest articles - Mon, 03/13/2017 - 06:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00388A, Technical NoteManoel L Aquino Lima, Carina F Nascimento, Fabio R.P. Rocha
A new approach for photometric measurements in procedures involving liquid-liquid extraction is proposed. It is based on the direct acquisition of the digital image of the sample extract in a...
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Green-fluorescent nitrogen-doped carbon nanodots for biological imaging and paper-based sensing

RSC - Anal. Methods latest articles - Mon, 03/13/2017 - 06:45
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00163K, PaperLihong Shi, Bo Zhao, Xiaofeng Li, Guomei Zhang, Yan Zhang, Chuan Dong, Shaomin Shuang
Green-fluorescent nitrogen-doped carbon nanodots (N-CDs) have been fabricated by hydrothermal treatment of oolong tea. As-prepared N-CDs exhibit bright green fluorescence, excellent biocompatibility, low toxicity, and considerable optical stability. By virtue...
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Analysis of Stable Isotope Assisted Metabolomics Data Acquired by High Resolution Mass Spectrometry

RSC - Anal. Methods latest articles - Fri, 03/10/2017 - 06:12
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00291B, PaperXiaoli Wei, Pawel Lorkiewicz, Biyun Shi, Joshua K Salabei, Bradford G Hill, Seongho Kim, Craig J McClain, Xiang Zhang
Stable isotope assisted metabolomics (SIAM) uses stable isotope tracers to support studies of biochemical mechanisms. We report a suite of data analysis algorithms for automatic analysis of SIAM data acquired...
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On-flow Assay for Screening of [small beta]-Secretase Ligands by Immobilized Capillary Reactor-Mass Spectrometry

RSC - Anal. Methods latest articles - Fri, 03/10/2017 - 05:11
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00284J, PaperAdriana Ferreira Lopes Vilela, Carmen Lucia Cardoso
The enzyme [small beta]-secretase1 (BACE1) is an aspartyl protease that initiates the cleavage of the A[small beta] amyloid precursor protein (APP), to generate and aggregate [small beta]-amyloid (A[small beta]) peptides. Aggregates of A[small beta] peptide...
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Assessment of quantitative accuracy of Rietveld/XRD analysis of the crystalline and amorphous phases in fly ash

RSC - Anal. Methods latest articles - Thu, 03/09/2017 - 10:03
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00337D, PaperPiqi Zhao, Xianping Liu, Angeles G De la Torre, Lingchao Lu, Konstantin Sobolev
The internal standard method based on Rietveld/XRD whole-patten fitting analysis of fly ash is used to assess the quantitative accuracy to determine the crystalline and amorphous phases under various conditions...
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Effect of sample temperature, pH, and matrix on the percentage protein binding of protein-bound uraemic toxins

RSC - Anal. Methods latest articles - Thu, 03/09/2017 - 06:01
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00054E, PaperOlivier Deltombe, Annemieke Dhondt, Wim Van Biesen, Griet Glorieux, Sunny Eloot
While studying and trying to optimise dialysis clearances of protein-bound uraemic toxins (PBUTs), the percentage protein binding (%PB) may be an important parameter and can be calculated from measured free...
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Dynamic Solid-Phase RNA Extraction from a Biological Sample in a Polyester-Toner Based Microchip

RSC - Anal. Methods latest articles - Thu, 03/09/2017 - 06:01
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03481K, Technical NoteThiago Dadalto Gimenez, Alexandre Melo Bailao, Celia Maria de Almeida Soares, Fabiola Souza Fiaccadori, Menira Borges de Lima Dias Souza, Gabriela Rodrigues Mendes Duarte
The standard molecular diagnostic techniques for dengue virus infection involve sample preparation (RNA extraction) followed by reverse transcription-nucleic acid amplification and separation/detection of DNA fragments. Efficient and reliable RNA extraction...
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Preparation and application of magnetic molecularly imprinted polymers for selective extraction of coumarins from food and plant samples

RSC - Anal. Methods latest articles - Thu, 03/09/2017 - 04:59
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00502D, PaperAndrea Machynakova, Katarina Hrobonova
In this study, magnetic molecularly imprinted polymers (MMIPs) were synthesized and evaluated. Coumarin and 7-hydroxycoumarin were tested as templates for the preparation of MMIPs by using surface molecular imprinting technique...
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Novel method for the extraction and identification of microplastics in ocean trawl and fish gut matrices

RSC - Anal. Methods latest articles - Tue, 03/07/2017 - 12:31

Anal. Methods, 2017, 9,1479-1490
DOI: 10.1039/C6AY02396G, PaperJeff Wagner, Zhong-Min Wang, Sutapa Ghosal, Chelsea Rochman, Margy Gassel, Stephen Wall
This alternative microplastic extraction method employs ultrapure water, ultrasonication, and identification using complementary optical microscopy, SEM/EDS, FTIR, and RMS techniques.
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Use of a direct mercury analyzer[registered sign] for mercury speciation in different matrices without sample preparation

RSC - Anal. Methods latest articles - Tue, 03/07/2017 - 08:25
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03041F, PaperClaudia Carvalhinho Windmoller, Nayara Carolinne Silva, Pedro Henrique Moraes Andrade, Louise Aparecida Mendes, Claudia Magalhaes do Valle
Use of thermal release to obtain mercury speciation information has long been used. In this work, operational conditions of a commercial thermal direct mercury analyzer (DMA-80 Milestone), which is normally...
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Simultaneous quantitative analysis of three components in mixture samples based on NIR spectra with temperature effect

RSC - Anal. Methods latest articles - Tue, 03/07/2017 - 07:24
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00448F, PaperJin Jin Liu, Baoqiong Li, Minli Xu, Xue Wang, Hong Lin Zhai, Jules Muhire
The temperature effect is usually regarded as one of the interferences in the routine analysis of near infrared (NIR) spectra. In this paper, the Tchebichef image moment (TM) method was...
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