Archive for the ‘Hot Article’ Category

HOT articles in Analytical Methods

Take a look at our new hot articles just published in Analytical Methods. These papers are all free to read for the next few weeks. Enjoy the reading! Graphical abstract: A simple chalcone-based fluorescent chemosensor for the detection and removal of Fe3+ ions using a membrane separation method

A sensitive electrochemical biosensor for microRNA detection based on streptavidin–gold nanoparticles and enzymatic amplification
Yunlin Peng, Jianhui Jiang and Ruqin Yu
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C4AY00033A, Paper

A simple chalcone-based fluorescent chemosensor for the detection and removal of Fe3+ ions using a membrane separation method
K. Velmurugan, J. Prabhu, Lijun Tang, T. Chidambaram, M. Noel, S. Radhakrishnan and R. Nandhakumar
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42139B, Paper

Quantification by SIFT-MS of volatile compounds emitted by in vitro cultures of S. aureus, S. pneumoniae and H. influenzae isolated from patients with respiratory diseases
Thomas W. E. Chippendale, Francis J. Gilchrist, Patrik Španěl, Alice Alcock, Warren Lenney and David Smith
Anal. Methods, 2014,6, 2460-2472
DOI: 10.1039/C4AY00209A, Paper

Selective recognition of luteolin and quercetin based on the specific interaction of ortho-dihydroxy substituents with a zinc(II) complex
Bowen Xiao, Huijuan Wang, Xijuan Zhao and Yuanfang Li
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C4AY00066H, Paper

A segmented PLS method based on genetic algorithm
Guangzao Huang, Xiukai Ruan, Xiaojing Chen, Dongxiu Lin and Wenbin Liu
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41765D, Paper Graphical abstract: Advancing the analysis of impurities in hydrogen by use of a novel tracer enrichment method

Electrochemically controlled solid phase microextraction of ibuprofen based on nanostructure conducting molecular imprinted polypyrrole and selective analysis in biological and formulation samples using ion mobility spectrometry
Naader Alizadeh, Elham Samaei and Hamideh Kalhor
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42090F, Paper

Advancing the analysis of impurities in hydrogen by use of a novel tracer enrichment method
Arul Murugan and Andrew S. Brown
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42174K, Paper

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HOT articles in Analytical Methods

Take a look at our new hot articles just published in Analytical Methods. These papers are all free to read until 21st April 2014. Enjoy the reading! Graphical abstract: Quantitative-nanoliter immunoassay in capillary immune microreactor adopted inkjet technology

Quantitative-nanoliter immunoassay in capillary immune microreactor adopted inkjet technology
Jianmin Yang, Hulie Zeng, Shuhua Xue, Fengming Chen, Hizuru Nakajima and Katsumi Uchiyama
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C4AY00216D, Communication

A core–shell Fe3O4 nanoparticle–CdTe quantum dot–molecularly imprinted polymer composite for recognition and separation of 4-nonylphenol
Shuang Han, Xin Li, Yuan Wang and Chao Su
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41924J, Paper

A sensitive, switchable and biocompatible surface enhanced Raman scattering-fluorescence dual mode probe using bipyramid gold nanocrystal-gold nanoclusters for high-throughput biodetection
Zhou Xiaoyan, Li Ruiyi, Wu Xiaofei and Li Zaijun
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41966E, Paper

A naphthalimide-based azo colorimetric and ratiometric probe: synthesis and its application in rapid detection of cyanide anions
Yuanqiang Hao, Wansong Chen, Liqiang Wang, Binbin Zhou, Qiguang Zang, Song Chen and You-Nian Liu
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41931B, Paper Graphical abstract: Determination of selenium in soil samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample analysis

Determination of hepatitis B virus surface antigen in serum with a sandwich immunoassay and capillary electrophoresis–electrochemical detection
Yu Chen, Jie Wang, Zhongming Liu and Guoquan Wu
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C4AY00109E, Paper

Determination of selenium in soil samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample analysis
Ivan N. B. Castilho, Éderson R. Pereira, Bernhard Welz, Abdallah A. Shaltout, Eduardo Carasek and Irland B. Gonzaga Martens
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42227E, Paper

Fast analysis of β-ecdysone in Brazilian ginseng (Pfaffia glomerata) extracts by high-performance liquid chromatography using a fused-core column
Mauricio A. Rostagno, Isabel C. N. Debien, Renata Vardanega, Gislaine C. Nogueira, Gerardo F. Barbero and M. Angela A. Meireles
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42276C, Paper

Magnetic solid-phase extraction combined with in situ slurry cold vapor generation atomic fluorescence spectrometry for preconcentration and determination of ultratrace mercury
Wang-bing Zhang, Chu-xiao Sun and Xin-an Yang
Anal. Methods, 2014, Advance Article Graphical abstract: Determination of danofloxacin and its photodegradation products by HPLC-DAD. Kinetic evaluation of the degradation process and identification of photoproducts by mass spectrometry
DOI: 10.1039/C3AY42118J, Paper

Determination of danofloxacin and its photodegradation products by HPLC-DAD. Kinetic evaluation of the degradation process and identification of photoproducts by mass spectrometry
Urszula Hubicka, Barbara Żuromska-Witek, Paweł Żmudzki, Michał Stanisławski and Jan Krzek
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42300J, Paper

A novel approach for differentiation of milk fractions and polyvinylpyrrolidone with different molecular weight by patterns derived from cupric chloride crystallization with additives
Johannes Kahl, Nicolaas Busscher, Wolfgang Hoffmann, Gaby Mergardt, Ingrid Clawin-Raedecker and Angelika Ploeger
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41568F, Technical Note

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Probing tissue calcifications for cancer

The presence of calcifications is an early indicator of breast cancer and is detected using a mammography to diagnose the disease. However, both malignant and benign tissues present these calcifications, and the small chemical differences in both cases have been difficult to distinguish. Vibrational spectroscopy has been used to study these differences, but the difficulty arises in trying to locate them deep in tissue.

Researchers in the UK at Gloucestershire Royal Hospital, Cranfield University and the University of Exeter compared micro CT and X-ray fluorescence (XRF) in locating calcifications embedded within wax biopsy tissue samples. Both techniques successfully located calcifications, and CT had some advantages in resolution, speed and depth. Furthermore, typical collection, such as the dyes used in histological staining can affect the collected spectra. An alternative method such as CT coupled with spectroscopy could potentially find calcifications and detect cancer.

To read more about this study, click the link below which is free until April 19th.

Locating microcalcifications in breast histopathology sections using micro CT and XRF mapping
Robert Scott, Catherine Kendall, Nicholas Stone and Keith Rogers
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42158A

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HOT articles in Analytical Methods

Take a look at our new hot articles just published in Analytical Methods. These papers are all free to read until 14th April 2014. Enjoy the reading! Graphical abstract: Amplified inhibition of the electrochemical signal of graphene–thionine nanocomposites using silica nanoprobes for ultrasensitive electrochemical immunoassays

Synthesis of Ag2S quantum dots by a single-source precursor: an efficient electrode material for rapid detection of phenol
Swarup Kumar Maji, Sivaramapanicker Sreejith, Amal Kumar Mandal, Amit Kumar Dutta and Yanli Zhao
Anal. Methods, 2014,6, 2059-2065
DOI: 10.1039/C3AY42264J, Paper

Amplified inhibition of the electrochemical signal of graphene–thionine nanocomposites using silica nanoprobes for ultrasensitive electrochemical immunoassays
Guosong Lai, Cuiying Yin, Xiangen Tan, Haili Zhang and Aimin Yu
Anal. Methods, 2014,6, 2080-2085
DOI: 10.1039/C4AY00020J, Paper

Advances in the offline trace metal extraction of Mn, Co, Ni, Cu, Cd, and Pb from open ocean seawater samples with determination by sector field ICP-MS analysis
Fabien Quéroué, Ashley Townsend, Pier van der Merwe, Delphine Lannuzel, Géraldine Sarthou, Eva Bucciarelli and Andrew Bowie
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41312H, Paper

Low-cost synthesis of carbon nanodots from natural products used as a fluorescent probe for the detection of ferrum(III) ions in lake water
Jingyi Xu, Ying Zhou, Shuxian Liu, Meiting Dong and Chaobiao Huang
Anal. Methods, 2014,6, 2086-2090
DOI: 10.1039/C3AY41715H, Paper Graphical abstract: Synthesis of Ag2S quantum dots by a single-source precursor: an efficient electrode material for rapid detection of phenol

Recent advances in the fabrication and detection of lectin microarrays and their application in glycobiology analysis
Hong Li, Liming Wei, Pan Fang and Pengyuan Yang
Anal. Methods, 2014,6, 2003-2014
DOI: 10.1039/C3AY41974F, Critical Review

Magnetic separation–enrichment-mediated signal amplification for a simple and sensitive fluorometric assay of biotin
Hong Li, Wenping Zhu, Guoli Shen and Ruqin Yu
Anal. Methods, 2014,6, 2091-2095
DOI: 10.1039/C3AY42128G, Paper

UPLC-MS coupled with a dynamic multiple data processing method for the comprehensive detection of the chemical constituents of the herbal formula San-Miao-Wan
Di Zou, Ai-hua Zhang, Guang-li Yan, Yun-long Tan, Hui Sun and Xi-jun WangGraphical abstract: Recent advances in the fabrication and detection of lectin microarrays and their application in glycobiology analysis
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41814F, Paper

Capillary electrophoresis of a wide range of DNA fragments in a mixed solution of hydroxyethyl cellulose
Zhenqing Li, Chenchen Liu, Yoshinori Yamaguchi, Yi Ni, Qingxiang You and Xiaoming Dou
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41965G, Paper

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HOT articles in Analytical Methods

Take a look at our new hot articles just published in Analytical Methods. These papers are all free to read until 8th April 2014. Enjoy the reading! Graphical abstract: Selective and colorimetric detection of pyruvic acid using conformational switch of i-motif DNA and unmodified gold nanoparticles

Sensitive and rapid determination of diethylstilbestrol using mesoporous SBA-15 modified electrode
Xiafeng Xie, Dong Sun, Guishen Liu and Qingpeng Zeng
Anal. Methods, 2014,6, 1640-1644
DOI: 10.1039/C3AY41977K, Paper

Locating microcalcifications in breast histopathology sections using micro CT and XRF mapping
Robert Scott, Catherine Kendall, Nicholas Stone and Keith Rogers
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42158A, Paper

Spatially resolved chemical imaging of individual atmospheric particles using nanoscale imaging mass spectrometry: insight into particle origin and chemistry
Sutapa Ghosal, Peter K. Weber and Alexander Laskin
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42012D, Paper Graphical abstract: Preparation of a mixed-mode silica-based sorbent by click reaction and its application in the determination of primary aromatic amines in environmental water samples

Selective and colorimetric detection of pyruvic acid using conformational switch of i-motif DNA and unmodified gold nanoparticles
Wei Li, Chao Pan, Ting Hou, Xiuzhong Wang and Feng Li
Anal. Methods, 2014,6, 1645-1649
DOI: 10.1039/C3AY41883A, Paper

Preparation of a mixed-mode silica-based sorbent by click reaction and its application in the determination of primary aromatic amines in environmental water samples
Yuling Zhu, Weiya Zhang, Lixia Li, Caiying Wu and Jun Xing
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42027B, Paper

Microfluidic chip for rapid analysis of cerebrospinal fluid infected with Staphylococcus aureus
Hao Yuan, Yingchao Liu, Xiran Jiang, Shangchen Xu and Guodong Sui
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41925H, Communication Graphical abstract: Brushing, a simple way to fabricate SERS active paper substrates

Brushing, a simple way to fabricate SERS active paper substrates
Wei Zhang, Bowei Li, Lingxin Chen, Yunqing Wang, Dingxue Gao, Xuehua Ma and Aiguo Wu
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C4AY00046C, Paper

Quantification of recombinant human relaxin-2 (B-29/A-24) in non-pregnant rat plasma using ultra performance liquid chromatography-mass spectrometry
Xiaoyan Zhu, Jingjing Liu, Jie Wu, Rongyue Cao and Taiming Li
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42194E, Paper

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HOT articles in Analytical Methods

Take a look at our new hot articles just published in Analytical Methods. These papers are all free to read until March 31st 2014. Enjoy the reading!

Graphical abstract: Human papilloma virus genotyping by surface-enhanced Raman scattering

Human papilloma virus genotyping by surface-enhanced Raman scattering
Sam Hibbitts, P. Lewis White, Julie Green, Graeme McNay, Duncan Graham and Ross Stevenson
Anal. Methods, 2014,6, 1288-1290
DOI: 10.1039/C4AY00155A, Communication

A porous layer open tubular monolith on microstructured optical fibre for microextraction and online GC-MS applications
Samuel M. Mugo, Lauren Huybregts and James Mazurok
Anal. Methods, 2014,6, 1291-1295
DOI: 10.1039/C3AY41732H, Communication

Simple and highly sensitive electrogenerated chemiluminescence adenosine aptasensor formed by adsorbing a ruthenium complex-tagged aptamer on single-walled carbon nanotubes
Zhejian Li, Honglan Qi, Haiying Yang, Qiang Gao and Chengxiao Zhang
Anal. Methods, 2014,6, 1317-1323
DOI: 10.1039/C3AY41978A, Paper

Spectroscopic studies on naftazone and its metal complexes with analytical applications for quality control of tablets
Fawzia Ahmed Ibrahim, Nahed Mahmoud El-Enany, Rania Nabih El-Shaheny and Ibraam Emad Mikhail Graphical abstract: Simple and highly sensitive electrogenerated chemiluminescence adenosine aptasensor formed by adsorbing a ruthenium complex-tagged aptamer on single-walled carbon nanotubes
Journal Article
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41819G, Paper

Determination of the migration of eight parabens from antibacterial plastic packaging by liquid chromatography-electrospray ionization-tandem mass spectrometry
Lijun Lu, Wenming Xiong, Xiaojing Li, Shuiyuan Lv, Xi Tang, Minshi Chen, Zhexiang Zou, Zhenyu Lin, Bin Qiu and Guonan Chen
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42080A, Paper

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Improving brain cancer diagnostics with Raman spectroscopy

Microscopic images of H&E stained tissue sections of normal brain, metastatic brain, primary sites and GBM brain WHO grade IV (x100).

According to the Brain Research Trust, brain tumours are diagnosed in ~13000 people in Britain each year (of which 60 % are metastatic), 20 % of all cancer patients will develop secondary metastatic tumours in the brain and brain tumours are the most common solid tumour in children. Dr. Matt Baker and colleagues from the University of Central Lancaster, Lancashire Teaching Hospital and Dublin Institute of Technology have reported a study on the use of Raman spectroscopy to aid the diagnosis of brain cancer.

In this HOT new Analytical Methods paper, the team showed differences in spectra obtained by Raman scattering at the air-tissue interface and immersion Raman (where the sample is submerged in an appropriate medium, such as water) at the water-tissue interface. Immersion Raman was then used to identify differences between the tissue classes. Multivariate analysis was employed to differentiate between primary malignant tumours (glioblastoma multiforme), metastatic tumours and normal brain tissue with impressive sensitivity and specificity.  To read more about this study download the full article below, which is free to access until March 7th.

1

Investigating the use of Raman and immersion Raman spectroscopy for spectral histopathology of metastatic brain cancer and primary sites of origin
Leanne M. Fullwood, Graeme Clemens, Dave Griffiths, Katherine Ashton, Timothy P. Dawson, Robert W. Lea, Charles Davis, Franck Bonnier, Hugh J. Byrne and Matthew J. Baker 
Journal Article
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY42190B

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Upgraded Lab-on-a-Chip for Real-Time Detection of Food-borne Pathogens

Oliver Strohmeier and his colleagues from the University of Freiburg in Germany have developed a novel PCR-based platform to detect food-borne pathogens. Named “LabDisk”, the device implements centrifugal microfluidics for sample separation, and can be subsequently transferred to a commercially available thermocycler for real-time PCR amplification of pathogens including Listeria monocytogenes, Salmonella typhimurium, EHEC, Staphylococcus aureus, Citrobacter freundii, and Campylobacter jejuni. Importantly, LabDisk incorporates on-chip quality controls to help validate test results, and enables quantitative as well as qualitative testing. This new approach brings molecular detection one step closer to fully integrated sample-to-answer food testing.

Scheme of "LabDisk" for Detection of Foodborne Pathogens

"LabDisk" for Detection of Foodborne Pathogens

Download the full article, free until March 7th!

Real-time PCR based detection of a panel of food-borne pathogens on a centrifugal microfluidic “LabDisk” with on-disk quality controls and standards for quantification

Oliver Strohmeier, Nico Marquart, Daniel Mark, Günter Roth, Roland Zengerle and Felix von Stetten

Anal. Methods, 2014, Advance Article

DOI: 10.1039/C3AY41822G, Paper

Let us know what your thoughts are by leaving a comment!

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Keeping food safe: A novel immunoassay for milk analysis

Hybrid chemiluminescence immunoassays

The transfer of veterinary drugs into food products is of major concern to a world already struggling to combat antibiotic resistance. Antibiotics such as chloramphenicol also have serious side effects in humans, including bone marrow depression and acute leukemia. Despite government bans on the use of such drugs in food-producing animals in a number of countries, cases of food poisoning caused by contaminated meat continue to occur.

Researchers led by Hiayang Jiang at the China Agricultural University in Beijing have developed a novel method for the analysis of two key drugs, chloramphenicol (CAP) and clenbuterol (CLE), which can simultaneously detect trace amounts of each compound in milk samples.

Traditional detection methods have relied on gas and liquid chromatography, and mass spectrometry, which require expensive instrumentation and highly trained technicians. Jiang and coworkers have designed a hybrid chemiluminescence immunoassay to detect trace amounts of CAP and CLE in a single analysis, with minimal cost and time requirements.

This paper will be free to read until the 27th of February 2014.

Simultaneous determination of chloramphenicol and clenbuterol in milk with hybrid chemiluminescence immunoassays
Xiaoqi Tao, Jianzhong Shen, Xingyuan Cao, Zhanhui Wang, Xiaoping Wu and Haiyang Jiang
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41744A

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HOT articles in Analytical Methods

Take a look at our new hot articles just published in Analytical Methods. These papers are all free to read until February 28th 2014. Enjoy the reading!

Using spectral analysis and fluorescence lifetimes to discriminate between grass and tree pollen for aerobiological applications
David J. O’Connor, Pierre Lovera, Daniela Iacopino, Alan O’Riordan, David A. Healy and John R. Sodeau
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41093E, Paper

A green HPLC method for the analysis and stability study of flavoxate HCl using micellar eluent
Rania Nabih El-Shaheny, Nahed Mahmoud El-Enany and Fathalla Fathalla Belal
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41318G, Paper

Trap-and-release membrane inlet ion mobility spectrometry for on-line measurement of trace propofol in exhaled air
Qinghua Zhou, Enyou Li, Xin Wang, Yulei Gong, Lei Hua, Weiguo Wang, Tuanshuai Qu, Jinghua Li, Yiping Liu, Changsong Wang and Haiyang Li
Anal. Methods, 2014,6, 698-703
DOI: 10.1039/C3AY41545G, Paper

Microwave-assisted synthesis of ionic liquid-modified silica as a sorbent for the solid-phase extraction of phenolic compounds from water
Ping Su, Ruoyu Wang, Yang Yu and Yi Yang
Anal. Methods, 2014,6, 704-709
DOI: 10.1039/C3AY41771A, Paper

Electrostatic fabrication of oleylamine capped nickel oxide nanoparticles anchored multiwall carbon nanotube nanocomposite: A robust electrochemical determination of riboflavin at nanomolar levels
Deivasigamani Ranjith Kumar, Devaraj Manoj and Jayadevan Santhanalakshmi
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41810C, Paper

OpenFluor– an online spectral library of auto-fluorescence by organic compounds in the environment
Kathleen R. Murphy, Colin A. Stedmon, Philip Wenig and Rasmus Bro
Anal. Methods, 2014,6, 658-661
DOI: 10.1039/C3AY41935E, Communication

Biases in ketone measurements using DNPH-coated solid sorbent cartridges
Steven Sai Hang Ho, Judith C. Chow, John G. Watson, Ho Sai Simon Ip, Kin Fai Ho, Wen Ting Dai and Junji Cao
Anal. Methods, 2014, Advance Article
DOI: 10.1039/C3AY41636D, Communication

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