Archive for the ‘Hot Article’ Category

A Global Vision on Nanoparticles

Lopez-Serrano et al., Anal. Methods, 2013

Nanoparticles are broadly defined as particles with at least one external dimension between 1-100 nm. Due to their small scale, the physico-chemical properties of nanoparticles often differ from those of their corresponding bulk material. These extraordinary properties have sparked a great deal of interest in nanoparticles for a wide range of applications, massively increasing their use in consumer products and ultimately their release into the environment. The chemical composition, structure, size, and shape of nanoparticles can significantly impact on environment and health. Analysis and characterisation of nanoparticles is therefore extremely important to understand their potential toxicity.
In their review, Carmen Cámara and colleagues at the University Complutense of Madrid, Spain, highlight the challenges faced by scientists and policy makers in assessing the safety and impact of nanoparticles due to the lack of standardised procedures. According to the authors, the properties that make these novel materials so appealing to industry may also be responsible for enhanced human and environmental toxicity.

The review covers a wide range of topics within nanotoxicology and it is of great interest to anyone looking for a detailed overview of the field. The section on nanoparticle analysis thoroughly describes the uses and pitfalls for the various analytical techniques available and discusses important topics such as nanoparticle extraction/enrichment and size fractionation.

To read the full article, please access the link below. This paper will be free to read until October 29th.

Nanoparticles: a global vision. Characterization, separation, and quantification methods. Potential environmental and health impact
Ana López-Serrano, Riansares Muñoz Olivas, Jon Sanz Landaluze and Carmen Cámara 
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40517F

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HOT Articles in Analytical Methods

Take a look at the new HOT articles just published in Analytical Methods! These papers will be free to read for the next three weeks. Enjoy!

Biosensor for determination of hydrogen peroxide based on Yucca filamentosa membrane
Huan Yue,  Jie He, Dan Xiao and Martin M. F. Choi  
Anal. Methods, 2013,5, 5437-5443
DOI: 10.1039/C3AY40678D

A bacterial salt sensor created by multiplying phenotypes of GroE-depleted Escherichia coli
Kei Fujiwara, Keita B. Aoib and Shin-ichiro M. Nomura  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY41092G

Development of poly((3-acrylamidophenyl)boronic acid-co-N,N-methylenebisacrylamide) monolithic capillary for the selective capture of cis-diol biomolecules
Xin Wang, Yunchun Liu, Lianbing Ren, Hengye Li and Zhen Liu  
Anal. Methods, 2013,5, 5444-5449
DOI: 10.1039/C3AY41045E

Development of a simplified enhanced chemiluminescence enzyme linked immunosorbent assay (ECL-ELISA) for the detection of phosmet, azinphos-methyl and azinphos-ethyl residues in vegetable samples
Bing Liu, Yu Ge, Yan Zhang, Yang Song, Yurun Chen and Shuo Wang  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40825F

Development and validation of a rapid turbidimetric assay to determine the potency of ampicillin sodium in powder for injectable solution
Eliane Gandolpho Tótoli and Hérida Regina Nunes Salgado  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40847G

Highly luminescent glutathione-capped ZnS:Mn/ZnS core/shell doped quantum dots for targeted mannosyl groups expression on the cell surface
Rui Ban, Jingjing Li, Juntao Cao, Penghui Zhang, Jianrong Zhang and Jun-jie Zhu  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY41189C

Advanced statistical analysis and discrimination of gunshot residue implementing combined Raman and FT-IR data
Justin Bueno and Igor K. Lednev  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40721G

Detection of methamphetamine in indoor air using dynamic solid phase microextraction: a supplementary method to surface wipe sampling
Elizabeth J. McKenzie,  Gordon M. Miskelly and Paul A. G. Butler  
Anal. Methods, 2013,5, 5418-5424
DOI: 10.1039/C3AY40537K

Coffee origin discrimination by paper spray mass spectrometry and direct coffee spray analysis
Rafael Garrett, Claudia M. Rezende and Demian R. Ifa  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY41247D

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The Top Performer in Pesticide Residue Analysis

GC-MS/MS in residual pesticide analysis

GC-MS/MS in residual pesticide analysis

The laws surrounding trace amounts of pesticide found in food and the environment are designed to protect consumers and ensure that agricultural practises do not have a detrimental effect on the natural world. Even after being washed and prepared, crops can carry residual pesticides into processed products. These compounds must be both identified and quantified at very low concentration, presenting a particular challenge to analytical chemists.

In this critical review, Felíx Hernández and researchers at the University Jaume I, Spain, examine the use of gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) with a triple quadrupole (QqQ) analyzer for the identification and quantification of pesticide compounds. This technique has emerged as a reliable, highly sensitive and selective tool for pesticide analysis in a complex matrix.

The authors have identified and explored a range of instances where GC-MS/MS has been successfully employed in this way. They make comparisons in a number of areas, including sample preparation, type of analyte, and mode of analysis. The food matrices being tested range from fruit and vegetables to milk, meat, ginseng and olive oil.

To read the full article, please access the link below. This paper will be free to read until October 18th.

The role of GC-MS/MS with triple quadrupole in pesticide residue analysis in food and the environment
F. Hernández, M. I. Cervera, T. Portolés, J. Beltrán and E. Pitarch
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY41104D

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Free HOT articles in Analytical Methods

Take a look at the new HOT articles just published in Analytical Methods! These papers will be free for you to read for the next three weeks. Click on the links below:

Bell et al., Anal. Methods, 2013, 5, 4591-4601

Quantitation of IgG protein adsorption to gold nanoparticles using particle size measurement
Nia C. Bell, Caterina Minelli and   Alexander G. Shard
Anal. Methods, 2013,5, 4591-4601
DOI: 10.1039/C3AY40771C

Label-free fluorometric assay for acetylcholinesterase and inhibitor screening based on supramolecular assemblies
Lan Jia, Jun Pan and   Jingxin Zhu
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY41007B

Evaluation of the multimetal deposition process for fingermark enhancement in simulated operational environments
Deborah T. Charlton, Stephen M. Bleay and   Vaughn G. Sears
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40533H

Imidazolium-modified sulfonated polyetheretherketone for selective isolation of hemoglobin
Gang Zhao, Shuai Chen, Jie Yue and   Rong-huan He
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40845K

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HOT Articles in Analytical Methods

Take a look below at the new HOT Articles just published in Analytical Methods. All these papers are free for you to read for the next three weeks.

A novel gold nanorod-based spectrographic method for evaluating the curcumin inhibitory action on HepG2 cells
Yanjuan Tang, Guimin Sun, Jiye Cai and Peihui Yang  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40249E

Rapid determination of preliminary thalassaemia screening indicators based on near-infrared spectroscopy with wavelength selection stability
Tao Pan, Jinming Liu, Jiemei Chen, Guopeng Zhang and Yan Zhao 
Anal. Methods, 2013,5, 4355-4362
DOI: 10.1039/C3AY40732B

A novel test strip for toxicity assessment using luminescent bacteria in hydrogel
Xiaodong Nie, Jinling Zhang, Xiran Jiang, Sixiu Liu, Haisong Cui, Pengyuan Yang and Guodong Sui  
Anal. Methods, 2013,5, 4386-4390
DOI: 10.1039/C3AY40766G

 Classification of Raman spectra of single cells with autofluorescence suppression by wavelength modulated excitation
Sebastian Dochow, Norbert Bergner, Christoph Krafft, Joachim Clement, Michael Mazilu, Bavishna B. Praveen, Praveen C. Ashok, Rob Marchington, Kishan Dholakia and Jürgen Popp  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40193F

Development and optimization of an ELISA based method to detect Listeria monocytogenes and Escherichia coli O157 in fresh vegetables
Marina Cavaiuolo, Spiros Paramithiotis, Eleftherios H. Drosinos and Antonio Ferrante  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40893K

Preliminary studies into the effect of environmental degradation on the characterisation of automotive clear coats by attenuated total reflectance infrared spectroscopy
Georgina Sauzier, Mark Maric, Wilhelm van Bronswijk and Simon W. Lewis 
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40458G

An emergent optimal precision in chemical measurement at low concentrations
Michael Thompson  
Anal. Methods, 2013,5, 4518-4519
DOI: 10.1039/C3AY40557E

Effect of hydrogen peroxide oxidation systems on human urinary steroid profiles
Unnikrishnan Kuzhiumparambila and   Shanlin Fu*a  
Anal. Methods, 2013,5, 4402-4408
DOI: 10.1039/C3AY40181B

Dynamic solid phase microextraction analysis for airborne methamphetamine: quantitation using isotopically substituted methamphetamine
Elizabeth J. McKenzie, Gordon M. Miskelly and Paul A. G. Butler 
Anal. Methods, 2013,5, 4391-4396
DOI: 10.1039/C3AY40536B

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HOT Articles in Analytical Methods

Take a look below at the new HOT Articles just published in Analytical Methods. They will be free to read until August 16th. Enjoy!

Detection of drugs in latent fingermarks by mass spectrometric methods
Angelina Yimei Lim, Frederick Rowell, Cheryl Grace Elumbaring-Salazar, Jason Lokee and Jan Maa  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40538A

Mobile Raman spectroscopy analysis of ancient enamelled glass masterpieces
Maria Cristina Caggiani, Philippe Colomban, Claire Valotteau, Annarosa Mangone and Pierre Cambon 
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40648B

Platinum nanoflower-based catalysts for an enzyme-free electrochemical immunoassay of neuron-specific enolase
Xiaohong Fu, Rong Huang, Jiexue Wang and Xueru Feng  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40844B

Recent developments in electromembrane extraction
Astrid Gjelstad and Stig Pedersen-Bjergaard  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40547H

Rapid determination of trace sulfonamides in fish by graphene-based SPE coupled with UPLC/MS/MS
Linyao Chen, Tao Zhou, Yanping Zhang and Yanbin Lu  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40523K

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HOT Articles in Analytical Methods

Take a look at our latest HOT articles just published in Analytical Methods! They will be free to read until August 3rd. Click on the links below:

Application of free radical diphenylpicrylhydrazyl (DPPH) to estimate the antioxidant capacity of food samples
Krystyna Pyrzynska and   Anna Pękal
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40367J

Applications of voltammetric ion selective electrodes to complex matrices
Alexander R. Harris, Jie Zhang, Robert W. Cattrall and   Alan M. Bond 
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40769A

Internal standardization in axially viewed inductively coupled plasma optical emission spectrometry (ICP OES) combined with pneumatic nebulization and aerosol desolvation
Guilherme Luiz Scheffler and   Dirce Pozebon
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40723C

Nanomaterial-based electrochemical detection of explosives: a review of recent developments
Aoife M. O’Mahony and   Joseph Wang
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40636A

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Improving Drug Detection in Blood

Mass spectral analysis of blood samples

Mass spectral analysis of blood samples

Analysing blood samples for the presence of legal and illegal drugs can present a challenge to forensic scientists; blood is a complex matrix which requires cleaning up before analysis, and the standard tests tend to be specific to a single drug or drug class.

Lambert Sørensen and Jørgen Hasselstrøm from the Department of Forensic Medicine at Aarhus University, Denmark, have developed a rapid method for quantification of around 50 drugs and metabolites in whole blood samples. The process uses ultra-high-performance liquid chromatography tandem mass spectrometry (UPLC-ESI-MS/MS) and shows low limits of detection even with post-mortem blood samples, which are more difficult to analyse due to varying degrees of putrefaction.

The simple sample preparation procedure involves deproteinisation by methanol/acetonitrile and ultrafiltration of the extract, and the researchers used a 96-well format to obtain high sample throughput.

To know more, access the link below. This paper will be free to read for the next 10 days.

A high-throughput multi-class liquid chromatography tandem mass spectrometry method for quantitative determination of licit and illicit drugs in whole blood
Lambert K. Sørensen* and   Jørgen B. Hasselstrøm
Anal. Methods, 2013,5, 3185-3193
DOI: 10.1039/C3AY40443A

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HOT Articles in Analytical Methods!

Take a look at our selected HOT Articles just published in Analytical Methods! They are all free for you to read until July 15th. Have a read now!

Time domain nuclear magnetic resonance: a key complementary technique for the forensic differentiation of foam traces
Michele Mauri, Murali Krishna Dibbanti, Matteo Calzavara, Lucio Mauri, Roberto Simonutti and Valerio Causin  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40330K 

Discrimination of oral submucous fibrosis (OSF) affected oral tissues from healthy oral tissues using multivariate analysis of in vivo fluorescence spectroscopic data: A simple and fast procedure for OSF diagnosis
Keshav Kumar, S. Sivabalan, S. Ganesan and Ashok Kumar Mishra  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40352A 
 
Rapid electrochemical detection of ferulic acid based on a graphene modified glass carbon electrode
Yanli Zhang, Yanpei Liu, Zhongming Yang, Yingcai Yang, Pengfei Pang, Yuntao Gao and Qiufen Hu  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40084K 

Evaluation of a new passive sampler using hydrophobic zeolites as adsorbents for exposure measurement of indoor BTX
Zhengjian Du, Jinhan Mo, Yinping Zhang, Xinxiao Li and Qiujian Xu 
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40600H 

Electrochemical biosensing platform based on a hemocyanin–Au@QC NP–carbon black hybrid nano-composite film
Peng Yang, Jun You, Fangping Li, Junjie Fei, Bo Feng, Xiulan He and Jinping Zhou  
Anal. Methods, 2013,5, 3168-3171
DOI: 10.1039/C3AY40654G

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Hot Articles in Analytical Methods

Take a look at our new selected HOT articles just published in Analytical Methods. They are all free for you to read until June 28th. Have a read now!

Supramolecular dispersive liquid–liquid microextraction based solidification of floating organic drops for speciation and spectrophotometric determination of chromium in real samples
Malihe Dehghani Mohammad Abadi, Mahmoud Chamsaz, Mohammad Hossein Arbab-Zavar and Farzaneh Shemirani  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY00036B 
 
A ratiometric fluorescent sensor for Ag+ based on 8-hydroxyquinoline platform in aqueous media
Huajie Xu, Zhaodi Liu, Liangquan Sheng, Deqian Huang, Hong Zhang, Chongfu Song, Mingming Chena and  Wuyang Hua  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40277K 
 
Application of portable spectrometer for ultra trace metal analysis after ionic liquid based microextraction
Xiaodong Wen, Qingwen Deng, Jiwei Wang and Xia Zhao  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40229K 
 
Highly sensitive determination of Orange II based on the dual amplified electrochemical signal of graphene and mesoporous TiO2
Tian Gan, Junyong Sun, Zuomin Lin and Yuling Li  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40250A 
 
Elimination of interferences caused by simultaneous use of deuterated and carbon-13 standards in GC-MS analysis of polycyclic aromatic hydrocarbons (PAHs) in extracts from passive sampling devices
Matyas Ripszam, Roman Grabic and Peter Haglund  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40419F

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