Analytical Chemistry News

Microfluidic hydrodynamic trapping for single cell analysis: Mechanisms, Methods and Applications

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00656J, Tutorial ReviewVigneswaran Narayanamurthy, Sairam Nagarajan, Al'aina Yuhainis Firus Khan, Fahmi Samsuri, Sridhar TM
Development of hydrodynamic based microfluidic biochip is increasing over years. Based on the technique, cells or particles are trapped on a certain region for single cell analysis (SCA) without any...
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Pencil drawn microelectrode on paper and its application in two-electrode electrochemical sensors

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00605E, PaperEzzaldeen Younes Younes Jomma, Ning Bao, Shou-Nian Ding
A simple approach for fabricating inexpensive, disposable pencil drawn microelectrode on paper for two-electrode electrochemical system is developed. The morphology of the fabricated microelectrode was evaluated by optical microscopy and...
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A new method for the separation of light rare earth elements in geological materials using a single column containing TODGA resin and its application to the determination of Nd isotope compositions by multicollector inductively coupled plasma-mass...

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00966F, PaperYuqiong Wang, Xiaoxiao Huang, Yali Sun, Shouqian Zhao, Yahui Yue
A new method was developed for the purification of Nd in geological samples using a single column containing TODGA extraction resin and the precise determination of Nd isotope ratios by...
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Target induced duplex-triplex transition for ratiometric detection of adenosine triphosphate

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00507E, PaperShujuan Yao, Yanhua Gao, Wen Wang, Donghua Ni, Kaixian Zhang, Ling Li, Jianqiang Du, Xiujuan Cui
Compared with the conventional binding pair of antigen and antibody, ease of chemical synthesisand and generally impressive target selectivity make aptamer ideal recognition tool for the design of various biosensors....
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Solid-phase extraction of chromium(III) with an ion-imprinted functionalized attapulgite sorbent prepared by a surface imprinting technique

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00346C, PaperZhenhua Li, Wei Kou, Shang Wu, Lan Wu
A new chromium(III)-imprinted azodicarbonamide-functionalized attapulgite sorbent was synthesized by a surface imprinting technique and was employed as a selective solid-phase extraction material for speciation analysis of chromium(III) in environmental water...
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Gas Chromatography and Diode Array Detection for the Direct Measurement of Carbon Disulfide in Challenging Matrices

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00392G, PaperRonda Gras, Jim Luong, Robert A. Shellie
A fast and reliable gas chromatographic technique for the direct measurement of parts-per-billion level of carbon disulfide in various segments such as hydrocarbon processing, flavour and odour, food packaging, and...
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NIR fluorescence detection of dopamine using 3-aminophenyl boronic acid-functionalized and lysozyme-templated gold nanoclusters

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00191F, CommunicationTongsheng Zhong, YIN Zhifang, GAO Peiyi, shasheng huang
In the communication, we proposed a phenylboronic acid-functionalized gold nanocluster (APBA-Lys-AuNCs) using lysozyme as a reducing reagent and capping ligand. The fluorescence quenching method was performed for the selective detection...
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On-line extraction and determination of residual sulfathiazole in pharmaceutical wastewater with molecularly imprinted polymers in a packed cartridge coupled with high-performance liquid chromatography

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00131B, PaperMohammad Ali Zazouli, Behrouz Akbari-adergani, Mehran Javanbakht, Mohammad Mahdi Moein
A new, rapid and sensitive on-line extraction and determination technique was developed with molecularly imprinted polymers (MIPs) in a packed cartridge.
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Supercritical fluid (CO2) chromatography for quantitative determination of selected cancer therapeutic drugs in the prescence of potential impurities in injection formulations

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00779E, PaperVenkata Narasimha Rao G., Ravi B., Jalandhar D., Manoj P., R. Venkata Nadh
In the present study, two cancer therapeutic drugs (docetaxel and bortezomib) were separated from their potential impurities on a chromatographic platform by utilizing CO2 gas (supercritical state) and quantified.
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Bright Red Fluorescent Conjugated Polymer Nanoparticles with Dibenzopyran as Electron Donor for Cell Imaging

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00585G, PaperMengyue Fan, Yuanyuan Zhou, Yijing Guo, Jinsheng Song, Xinrui Duan
Fluorescent conjugated polymers have been successfully used to make CPNs for cellular imaging, bio-orthogonal labeling, and in vivo tumor targeting, since CPNs have superior bright fluorescent emission and photo-stability. However,...
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A Beryllium-Selective Microcantilever Sensor Modified with Benzo-9-crown-3 Functionalized Polymer Brushes

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00490G, PaperRongpeng Peng, Ling-Bao Xing, Xiao-Jun Wang, Cheng-Juan Wu, Bin Chen, Frank (Haifeng) Ji, Li-Zhu Wu, Chen-Ho Tung
A benzo-9-crown-3 functionalized polymer brush was prepared via surface-initiated atom transfer radical polymerization on the gold surface of microcantilevers for selective detection of Be2+. Other metal ions, such as Li+,...
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Laboratory analytical methods applied in the early detection of cancers by tumor biomarker

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00926G, Minireviewweizhong wang, yan yu, xiuqing zhang, xiangmin tong
Cancer threatens the health of the human being nowadays, and it has a high mortality all over the world. Early detection of cancer is the key to the prevention and...
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Metabolic Comparison of Dorsal versus Ventral Cells Directly in the Live 8-cell Frog Embryo by Microprobe Single-cell CE-ESI-MS

RSC - Anal. Methods latest articles - Tue, 05/09/2017 - 06:55
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00834A, PaperRosemary M. Onjiko, David O. Plotnick, Sally A. Moody, Peter Nemes
Single-cell mass spectrometry (MS) empowers the characterization of metabolomic changes as cells differentiate to different tissues during early embryogenesis. Using whole-cell dissection and capillary electrophoresis electrospray ionization (CE-ESI) MS, we...
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Determination of free amino acids and nucleosides and nucleobases in Annona squamosa L. fruitages from different regions in China by LC-QTRAP-MS/MS

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 08:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00129K, PaperYa-yun Chen, Peng Hu, Yuan-jiao Zhang, Yue Li, Xiao-li Zhu, Jianwei Chen, Xiaobing Cui, Xiang Li, Yong Chen
The quantitative analysis of amino acids, nucleosides and nucleobases was important for the quality evaluation of the popular fruits Annona squamosa L. from different regions in China. In order to...
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Separation, detection and identification of phase I and phase II metabolites and their corresponding polycyclic aromatic compounds

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 07:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00715A, PaperLinus Malmquist, Esther Boll, Nikoline Juul Nielsen, Jan Christensen
Polycyclic aromatic compounds (PACs) are transformed into polar metabolites in environmental matrices. These metabolites are rarely included in risk assesments, although they contribute to the toxicity of PAC pollutions including...
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Determination of Hydrogen Peroxide by Novel Test Strips Based on Plastic Microcapillary Film

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 07:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00584A, Paperzheyun xu, Feng Jiang, Fanghao Zhou, Zhongbin Xu, Haoyan Xu, Xiaodong Ruan
This work proposes a novel method for semi-quantitative determination of hydrogen peroxide (H2O2) in routine applications. Potassium Iodide (KI) and starch are adopted as chromogenic reagents, while microcapillary films (MCFs)...
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Stable Isotope Labeling Assisted LC-MS Method for Determination of Polyamines in Micro Tissues of Rice

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 05:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00805H, PaperQiu-Yi Wang, Tian-tian Ye, Shu-Jian Zheng, Er-Cui Ye, Ren-Qi Wang, Yu-Qi Feng
Stable isotope labeling assisted LC-MS method were developed for highly sensitive quantitation of polyamines in roots and leaves of rice plants under cadmium stress. Successful quantitation of polyamines in minute...
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Utility of High Resolution Accurate Mass Spectrometry (HRMS) in the Mass Isotopomer Distribution Analysis (MIDA) of CSF Proteins Modified by Stable Isotope Labeling in Mammals (SILAM) Methodology Applied to Neurodegenerative Diseases

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 05:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00869D, PaperJoseph Cantone, Craig Polson, Cong Wei, Valerie Guss, Michael Ahlijanian, Jere Meredith, Dieter Drexler
The research on neurodegenerative diseases is challenged by accurate disease diagnosis and evaluation of treatment response, thus there is a need for indicators at the molecular level, specifically biomarkers, that...
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Functionalization of gold nanoparticles with Nanobodies through physical adsorption

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 05:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00854F, PaperJulie Goossens, Hla Sein, Shaogong Lu, Magdalena Radwanska, Serge Muyldermans, Yann G. J. Sterckx, Stefan Magez
Nanobodies (Nbs) are single-domain antibodies with highly desirable properties employed as versatile tools in structural biology, biochemistry and biomedical sciences. Nbs also have a significant potential for the development of...
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Instrument-free quantitative detection of alkaline phosphatase using paper-based devices

RSC - Anal. Methods latest articles - Mon, 05/08/2017 - 05:39
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00599G, Technical NoteLang Zhang, Jinfang Nie, Huili Wang, Juanhua Yang, Bingyue Wang, Yun Zhang, Jianping Li
Almost all the existing assay methods for alkaline phosphatase (ALP) require expensive analytical instruments and well-trained users to achieve quantitative results. This work initially describes a quantitative ALP assay that...
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