Author Archive

Hot Articles in Analytical Methods

Take a look at our selected HOT articles free to read until June 3rd.

A new DNA detection methodology based on Rayleigh scattering, the optimised analysis of cellulose depolymerisation and the evaluation of a standard method to measure diesel particulate matter (DPM) exposures in underground mines are among the studies presented in these papers.

To access the full articles, just click on the links below:

Analysis of cellulose using high performance liquid chromatography with polar IL as an eluent.

A resonance Rayleigh scattering detection of DNA hybridization based on interaction between DNA and surfactants
Ying Ma, Changqun Cai, Lin Luo, Jiaqi Xie and   Xiaoming Chen  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40291F

Dissolution determination of five components in Huoxiang Zhengqi tablets using partitioned dispersive liquid-liquid microextraction combined with HPLC-UV
Huaizhong Guo, Xiaomin Pang, Weiquan Zhang, Wenyue Jiang and   Xiaocong Pang  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40153G

A person-wearable instrument to determine DPM exposures in underground metal/nonmetal mines

Direct HPILC analysis of cellulose depolymerisation in ionic liquids
Kosuke Kuroda, Yukinobu Fukay and   Hiroyuki Ohno
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40182K

Real-time diesel particulate monitor for underground mines
James Noll, Samuel Janisko and   Steven E. Mischler  
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40083B

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Analytical Methods Issue 10 now online!

Wei et al., Anal. Methods, 2013, 5, 2440-2443

The latest issue of Analytical Methods is now available online. We have three beautiful covers featuring the most recent advances in the field of applied analytical chemistry.

Our outside front cover showcases the work of Xing-Jiu Huang and colleagues at the Chinese Academy of Sciences. The researchers introduce a new method to identify and quantify chlorobenzene micropollutants that are present in the natural environment. These pollutants have poor electrochemical activity and have been difficult to identify with electrochemical sensors. In this work, a novel ionic liquid–carbon nanotube composite sensor based on electrochemical impendance technique is proposed as an efficient sensor for micropollutants with poor electrochemical activity.

Ionic liquid–carbon nanotube composites as scaffolds in the determination of tetrachlorobenzene: electrochemical impedance technique
Yan Wei, Zhong-Gang Liu, Xing Chen, Jin-Huai Liu and   Xing-Jiu Huang
Anal. Methods, 2013, 5, 2440-2443 
DOI: 10.1039/C3AY00022B

Wolf and Reagen, Alnal. Methods, 2013, 5, 2444-2454

The wonderful inside front cover of this issue features the paper of Susan Wolf and William Reagen from the Environmental Laboratory 3M Centre, St. Paul, USA. In the study, the authors report a novel analytical method for analysis of perfluorinated compounds in water. In particular, they optimise and validate a technique based on pre-sampling isotope dilution-direct injection-liquid chromatography tandem mass spectrometry (DI-LC/MS/MS).

Method and validation for the analysis of perfluorinated compounds in water by pre-sampling isotope dilution-direct injection-LC/MS/MS
Susan T. Wolf and   William K. Reagen  
Anal. Methods, 2013, 5, 2444-2454
DOI: 10.1039/C3AY26347A

Zhang et al., Anal. Methods, 2013, 5, 2455-2460

Finally, the outside back cover of Issue 10 shows the research study of Zongxiu Nie and co-workers at the Chinese Academy of Sciences. In their work, the researchers present the rapid and direct detection of polyhydroxylated alkaloids in mulberry using leaf spray mass spectrometry and propose the leaf spray method for the rapid screening of lead compounds from natural plants during drug development.

Rapid detection of polyhydroxylated alkaloids in mulberry using leaf spray mass spectrometry
Ning Zhang, Yafeng Li, Yueming Zhou, Jian Hou, Qing He, Xiang-Guo Hu, Yue-Mei Jia, Chu-Yi Yu and   Zongxiu Nie 
Anal. Methods, 2013, 5, 2455-2460
DOI: 10.1039/C3AY00018D

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Analytical Methods Issue 9 now online!

Welcome to the latest issue of Analytical Methods!

We have a great new cover and a couple of HOT papers free for you to enjoy for the next four weeks. The outside front cover of this issue showcases the work of Monica Yang from Merck & Co., Inc. USA and colleagues at Eksigent, USA.

In their paper, the researchers present a liquid chromatography instrument for fast HPLC analysis, which provides good separation efficiency and system reproducibility. This system can be used efficiently for pharmaceutical analysis. Indeed, more than a dozen pharmaceutical components and related process impurities were resolved in 10 minutes on the micro LC instrument.

Evaluation of micro ultra high pressure liquid chromatography for pharmaceutical analysis
Monica (Mei) Yang, Xiaoyi Gong, Wes Schafer, Don Arnoldc and   Christopher J. Welch  
Anal. Methods, 2013,5, 2178-2181
DOI: 10.1039/C3AY26435A

Take a look at our HOT papers below, they will be free for you to read until May 21st.

Analytical techniques for single-liposome characterization
Chaoxiang Chen, Shaobin Zhu, Tianxun Huang, Shuo Wanga and   Xiaomei Yan
Anal. Methods, 2013,5, 2150-2157
DOI: 10.1039/C3AY40219C

Electrochemical sensing and biosensing based on square wave voltammetry
Aicheng Chen and   Badal Shah  
Anal. Methods, 2013,5, 2158-2173
DOI: 10.1039/C3AY40155C

DNA-stabilized silver nanoclusters with guanine-enhanced fluorescence as a novel indicator for enzymatic detection of cholesterol
Min Duan, Yunlin Peng, Liangliang Zhang, Xiangyu Wang, Jia Ge, Jianhui Jiang and   Ruqin Yu 
Anal. Methods, 2013,5, 2182-2187
DOI: 10.1039/C3AY40118A

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Square Wave Voltammetry: Recent Applications

Recent applications of square wave voltammetry

In this Critical Review, Aicheng Chen and Badal Shah describe the latest developments in electrochemical biosensing based on square wave voltammetry (SWV).

Because of its high sensitivity and selectivity, SWV has been widely used for detection of disease-related biomarkers, environmental pollutants and food contaminants. The authors define the recent biosensors based on SWV as the next generation point of care diagnostic devices, and highlight the successful applications of SWV in food analysis, environmental monitoring and enzymes kinetics.

To read the full article, please access the link below. This paper will be free to read until April 25th. Have a read!

Electrochemical sensing and biosensing based on square wave voltammetry
Aicheng Chen and Badal Shah
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40155C

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Analytical Methods Issue 8 now online!

Analytical Methods CoverThe latest issue of Analytical Methods is now available online. Take a look at our great new cover and read all about the innovative research behind it.

Stephen O’Driscoll and colleagues at the Dublin City University, Ireland, describe how we can use a simple mobile phone for environmental and diagnostic monitoring.

In their work featured in our outside front cover, they describe a phone’s camera which enables detection of fluorescence from a number of sensor spots on a disposable optical sensor chip without the need for communication with a remote server. The new method combines the functionality of the camera with the phone’s data processing and allows analysis of detected fluorescence intensity. According to the authors, mobile phones could represent an attractive technology platform for the development of portable sensors.   

A novel camera phone-based platform for quantitative fluorescence sensing
Stephen O’Driscoll ,  Brian D. MacCraith and Conor S. Burke
Anal. Methods, 2013,5, 1904-1908
DOI: 10.1039/C3AY40116B

Along with our new cover, here are some HOT articles for you to enjoy. Have a read now!

Gold–antibody nanocomposite thin film fabricated by a liquid–liquid interface technique and its application for the sensitive immunoassay of alpha-fetoprotein
Kun Wang ,  Tianxiang Wei ,  Wenwen Tu ,  Min Han and Zhihui Dai
Anal. Methods, 2013,5, 1909-1914
DOI: 10.1039/C3AY26541B

Protocol for production of matrix-matched brain tissue standards for imaging by laser ablation-inductively coupled plasma-mass spectrometry
Dominic J. Hare ,  Jessica Lear ,  David Bishop ,  Alison Beavis and Philip A. Doble
Anal. Methods, 2013,5, 1915-1921
DOI: 10.1039/C3AY26248K

Characterization of grape seed residues from the ethanol-distillation industry
Ángela Peralbo-Molina ,  Feliciano Priego-Capote and María Dolores Luque de Castro
Anal. Methods, 2013,5, 1922-1929
DOI: 10.1039/C3AY00008G

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HOT Articles in Analytical Methods

Analysis of perfluorinated compounds

Improved analysis of perfluorinated compounds
Susan Wolf
and William Reagen optimised a new analytical method to study perfluorinated compounds in water. The pre-sampling isotope dilution direct injection liquid chromatography tandem mass spectrometry presented here is the first example of isotope dilution with a 28 days sample holding time applicable to drinking and environmental water.

Method and validation for the analysis of perfluorinated compounds in water by pre-sampling isotope dilution-direct injection-LC/MS/MS
Susan T. Wolf and William K. Reagen
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY26347A

Detection of cholesterol using silver nanoclusters

Novel silver nanocluster to detect cholesterol
Cholesterol levels are important parameters often related to a wide range of diseases. Deficiency of cholesterol for instance can result in hyperthyroidism and malabsorption, whereas excess of cholesterol may cause nephrosis and diabetes mellitus. Ruqin Yu and others from the Hunan University in China developed a new and cost-effective silver nanocluster fluorescent sensor for efficient detection of cholesterol.

DNA-stabilized silver nanoclusters with guanine-enhanced fluorescence as a novel indicator for enzymatic detection of cholesterol
Min Duan ,  Yunlin Peng ,  Liangliang Zhang ,  Xiangyu Wang ,  Jia Ge ,  Jianhui Jiang and Ruqin Yu
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40118A

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Analytical Methods issue 7 now online!

Segato et al., Anal. Methods, 2013, 5, 1652-1657

The latest issue of Analytical Methods is finally available online. Take a look at our new cover and discover all about the research behind it.

Carlos Garcia and colleagues from the University of Texas at San Antonio, USA, present a new and fast microchip-inspired analytical device based on standard Plexiglas. Five plastic microfluidic components are directly connected to capillary tubes that easily enable the in-channel detection of analytes. The researchers demonstrated the efficiency of this method performing analysis of inorganic cations by capillary electrophoresis from soil samples from the Atacama Desert.

Microfab-less microfluidic capillary electrophoresis devices
Thiago P. Segato ,  Samir A. Bhakta ,  Matthew T. Gordon ,  Emanuel Carrilho ,  Peter A. Willis ,  Hong Jiao and Carlos D. Garcia
Anal. Methods, 2013,5, 1652-1657
DOI: 10.1039/C3AY26392D

Along with the cover of Issue 7 here is a couple of selected HOT Articles free for you to enjoy until April 4th. Click on the links below!

A proof-of-concept fluorescent strategy for highly selective detection of Cr(VI) based on inner filter effect using a hydrophilic ionic chemosensor
Dawei Zhang ,  Zhiyun Dong ,  Xiaozhi Jiang ,  Meiyun Feng ,  Wen Li and Guohua Gao
Anal. Methods, 2013,5, 1669-1675
DOI: 10.1039/C3AY26555B

Comparison of digestion procedures and methods for quantification of trace lead in breast milk by isotope dilution inductively coupled plasma mass spectrometry
Chitra J. Amarasiriwardena ,  Innocent Jayawardene ,  Nicola Lupoli ,  Ramon M. Barnes ,  Mauricio Hernandez-Avila ,  Howard Hu and Adrienne S. Ettinger
Anal. Methods, 2013,5, 1676-1681
DOI: 10.1039/C3AY26321E

Affinity analysis between immobilized L-arginine and plasmid isoforms provided by surface plasmon resonance
C. Cruz ,  A. Sousa ,  F. Sousa and João A. Queiroz
Anal. Methods, 2013,5, 1682-1686
DOI: 10.1039/C3AY40213D

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Hot Articles in Analytical Methods

Take a look at our selected HOT articles free for you to enjoy until April 4th. Papers include innovative research such as the characterisation of grape seed residues from ethanol-distillation industry, the development of a camera phone-based platform for fluorescence sensing and a new method for analysis of low-levels of asbestos in soil. To read the full papers, please click on the links below:

Grape seeds characterisation

A proof-of-concept fluorescent strategy for highly selective detection of Cr(VI) based on inner filter effect using a hydrophilic ionic chemosensor
Dawei Zhang ,  Zhiyun Dong ,  Xiaozhi Jiang ,  Meiyun Feng ,  Wen Li and Guohua Gao
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY26555B

Evaluation of a fluidized bed asbestos segregator preparation method for the analysis of low-levels of asbestos in soil and other solid media
J. Januch ,  W. Brattin ,  L. Woodbury and D. Berry
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY26254

A camera phone-based platform for fluorescence sensing

Characterization of grape seed residues from the ethanol-distillation industry

Ángela Peralbo-Molina ,  Feliciano Priego-Capote and María Dolores Luque de Castro
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY00008G

A novel camera phone-based platform for quantitative fluorescence sensing
Stephen O’Driscoll ,  Brian D. MacCraith and Conor S. Burke
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY40116B

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Analytical Methods Issue 6 now online!

Analytical Methods Issue 6 is now available online!

Take a look at our great new cover showing an interesting study coming directly from Brazil.

Marcos Eberlin and his team at the University of Campinas established two simple, fast and accurate techniques to optimise and standardise the quality control of the Andiroba oil, a famous Amazonian oil used as insecticide and analgesic. The team compared two mass spectrometry techniques, direct electrospray ionization mass spectrometry (ESI-MS) and easy ambient sonic-spray ionization (EASI-MS). Both techniques in the positive ion mode could detect adulteration of the Andiroba oil with soybean oil at low levels. According to the study, this method represents a fast and reproducible approach for typification and quality control of this important Amazonian oil.

Typification and quality control of the Andiroba (Carapa guianensis) oil via mass spectrometry fingerprinting
Elaine C. Cabral ,  Georgiana F. da Cruz ,  Rosineide C. Simas ,  Gustavo B. Sanvido ,  Lenise de V. Gonçalves ,  Rodrigo V. P. Leal ,  Regina C. F. da Silva ,  Julio C. T. da Silva ,  Lauro E. S. Barata ,  Valnei S. da Cunha ,  Luiz F. de França ,  Romeu J. Daroda ,  Gilberto F. de Sá and Marcos N. Eberlin
Anal. Methods, 2013, 5, 1385-1391
DOI: 10.1039/C3AY25743F

Comparative study of three QuEChERS methods to determine endocrine disrupting pesticides in lemons

In addition, check out this informative article on detection of endocrine discruptive pesticides in lemons. Mária Andraščíková and Svetlana Hrouzková from the Slovak University of Technology in Bratislava present a comparative study of three different versions of the quick, easy, cheap, effective, rugged and safe (QuEChERS) method to analyse endocrine disrupting compounds in acidic matrices. They showed that in difficult matrices such as lemons, the choice of modifications is analyte/matrix dependent.

A comparative study of three modifications of the QuEChERS method for determination of endocrine disrupting pesticide residues in lemon matrices by fast GC-MS
Mária Andraščíková and Svetlana Hrouzková
Anal. Methods, 2013, 1374-1384
DOI: 10.1039/C3AY26434C

Finally, remember to take a look at the selected HOT article of this issue! Please access the link below:

A spectrophotometric lipase assay based on substrate–nanoparticle assembly degradation
Margarita Stoytcheva ,  Roumen Zlatev ,  Samuel Behar and Jean-Jacques Bois
Anal. Methods, 2013, 1370-1373
DOI: 10.1039/C3AY00044C

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A new spectrophotometric method to measure lipase activity

Olive oil/nanoparticle degradation by lipase activity

Researchers in Mexico present a new rapid and cost effective spectrophotometric method to determine lipase activity in olive oil.

Lipases are a group of enzymes which catalyse reaction of hydrolysis of triacylglycerols to give free fatty acids, monoacylglycerol and glycerol. Measuring their activity is important in medicine and diagnostics as well as in pharmaceutical, cosmetic and paper industry. Unfortunately, the conventional assays currently available still rely on time-consuming procedures and employ radioactive materials and expensive reagents. In this work, the researchers used a layer of triglyceride coated with  Fe2O nanoparticles which are released when the substrate is degraded. A consequent change in light absorbance is observed following substrate degradation.
The new spectrophotometric method introduced by Margarita Stoytcheva and her group represents a promising analytical approach to reduce cost and increase effciency.

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

A spectrophotometric lipase assay based on substrate–nanoparticle assembly degradation
Margarita Stoytcheva ,  Roumen Zlatev ,  Samuel Behar and Jean-Jacques Bois
Anal. Methods, 2013, Advance Article
DOI: 10.1039/C3AY00044C

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