Analytical Chemistry News

Simultaneous determination of chlorinated aromatic hydrocarbons in fly ashes discharged from the industrial thermal processes

RSC - Anal. Methods latest articles - Mon, 07/31/2017 - 08:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01545C, PaperYun Fan, Haijun Zhang, Dan Wang, Meihui Ren, Xueping Zhang, Longxing Wang , Jiping Chen
Chlorinated aromatic hydrocarbons (CAHs) have received increasing attention because of their environmental persistent, bioaccumulation potential and high toxicity. In this study, an analytical methodology based on high-resolution gas chromatography/high-resolution mass...
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A colorimetric assay for Hg2+ detection based on Hg2+-induced hybridization chain reaction

RSC - Anal. Methods latest articles - Mon, 07/31/2017 - 07:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01231D, PaperLijuan Wang, Liping Jia, Rongna Ma, Wenli Jia, Huaisheng Wang
A simple colorimetric sensing method for the detection of Hg2+ was developed by combining enzymatic catalysis with DNA-based hybridization chain reaction (HCR). Firstly, the thymine (T)-rich capture DNA (cDNA) was...
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Innovative sandwich assay with dual optical and SERS sensing mechanisms for bacterial detection

RSC - Anal. Methods latest articles - Fri, 07/28/2017 - 09:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01596H, PaperBrooke Pearson, Panxue Wang, Shintaro Pang, Alexander James Mills , LA McLandsborough, Lili He
The increased incidence of food pathogen outbreaks placed a new emphasis on the requirement of a rapid, sensitive, and reliable detection method for pathogens in food samples. Surface-enhanced Raman spectroscopy...
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Spiegelmer as potential receptor for cTnI diagnostics

RSC - Anal. Methods latest articles - Fri, 07/28/2017 - 09:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01777D, CommunicationZsuzsanna Szeitner, Anna Doleschall, Marina Varga, Katalin Keltai, Katalin Revesz, Robert Gyurcsanyi, Tamas Meszaros
We demonstrate the first application of a nuclease resistant aptamer, so-called Spiegelmer in a sandwhich-type affinity assay by quantitative assesment of cardiac Troponin I (cTnI) in blood serum samples. To...
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Detection of Lithium in Scalp Hair by Time-of-Flight Secondary Ion Mass Spectrometry with High Energy (MeV) Primary Ions

RSC - Anal. Methods latest articles - Thu, 07/27/2017 - 05:07
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01616F, CommunicationKaren Jacqueline Cloete, Bostjan Jencic, Ziga Smit, Mitja Kelemen, Kwezikazi Mkentane, Primoz Pelicon
An example of a low-Z element that has received increased attention in the material and medical sciences, is lithium. Lithium studies in biological systems may however present with numerous challenges...
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Surface-enhanced Raman spectroscopy (SERS) in cultural heritage

RSC - Anal. Methods latest articles - Wed, 07/26/2017 - 10:54

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90097J, AMC Technical Brief Analytical Methods Committee AMCTB No. 80 (Background paper)
Surface-enhanced Raman spectroscopy (SERS) has been increasingly used in the last decade for the identification of organic colourants in works of art. This technical brief focuses on the practical aspects of SERS in its application to the analysis of cultural heritage material.
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Screening and identification of natural ligands of tyrosinase from Pueraria lobata Ohwi by combination of ultrafiltration and LC-MS.

RSC - Anal. Methods latest articles - Tue, 07/25/2017 - 11:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00851A, PaperGe Zhang, Guo Xiuhan, Shisheng Wang, Yueqing Li, Li Guangzhe, Weijie Zhao
Ultrafiltration combined with liquid chromatography-mass spectrometer (UF-LC-MS) is an efficient affinity-based method to screen potential ligands of biomacromolecules from natural resources. In order to investigate the effects of constituents from...
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UV-visible spectroscopic detection of kanamycin based on target-induced growth of gold nanoparticles

RSC - Anal. Methods latest articles - Tue, 07/25/2017 - 05:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01685A, PaperChunshuai Wang, Jing Liu, Xuyan Han, Chang Liu, yaping tian, Nandi Zhou
A UV-visible spectroscopic detection of kanamycin was successfully developed based on target-induced growth of gold nanoparticles (AuNPs), using AuNPs as probe and kanamycin-specific aptamer as recognition element. Firstly, the aptamer...
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Cloud Point Extraction of Rare Earths and Zinc Using 1,10-Phenanthroline and Triton X-114 Coupled with Microwave Plasma-Atomic Emission Spectrometry

RSC - Anal. Methods latest articles - Tue, 07/25/2017 - 05:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00421D, PaperXuemei Li, Naizhong Song, Wei Feng, Qiong Jia
In the present work, cloud point extraction (CPE) of rare earths and zinc coupled with microwave plasma atomic emission spectrometry (MP-AES) was studied with 1,10-phenanthroline as the chelating agent and...
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Preparation of polyacrylic acid surface-crosslinked strong fluorescent polymer nanoparticles and their sensitive in vitro imaging of cancer cells and long-life in vivo imaging of in situ tumor

RSC - Anal. Methods latest articles - Tue, 07/25/2017 - 05:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01392B, PaperXueping Cai, Huan-Huan He, Hai-Yang Ding, Xiao-Bo Chen, Tong-Hong Wei, Tian-mei Song, Si-Jia You, Hong-Ping Xie, Chun-Yan Min
This paper prepared a fluorescent nanoparticle with a novel structure suitable for detecting cancer cells in vitro and in vivo. Firstly, a strong hydrophilic branch amino polymer was synthesized, and...
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Improved protocols for pre-processing Raman spectra of formalin fixed paraffin preserved tissue sections

RSC - Anal. Methods latest articles - Mon, 07/24/2017 - 13:14
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C6AY03308C, PaperOla Ibrahim, Adrian Maguire, Aidan D Meade, Stephen Flint, Mary Toner, Hugh Byrne, Fiona Lyng
Although formalin fixed paraffin preserved (FFPP) tissues are a major resource for retrospective studies of disease progression, their use in vibrational spectroscopy studies has been undermined by issues of contributions...
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Simultaneous determination of eleven estrogenic and odorant chloro- and bromo- phenolic compounds in surface water through an automated online headspace SPME followed by on-fiber derivatization coupled with GC-MS

RSC - Anal. Methods latest articles - Mon, 07/24/2017 - 10:12
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00641A, Papersufen Yuan, Zehua Liu, haixian lian, chuangtao Yang, qing Lin, Hua Yin, Zhi Dang
An effective method based on an automated online headspace solid-phase microextraction (HS-SPME) followed by on-fiber derivatization coupled with gas chromatography-mass spectrometry (GC-MS) for simultaneous determination of eleven estrogenic and odorant...
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Determination of herbicide pyraclonil residue in rice, soil and water using High-performance liquid chromatography/tandem mass spectrometry

RSC - Anal. Methods latest articles - Fri, 07/21/2017 - 09:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01483J, Papermingfu hu, wuying chen, Yong Liu, deyong zhang, ang chen, qingping yan, xiangwen luo, Jianyu Liu
A quick, reliable and sensitive analytical method for the confirmation and quantification of pyraclonil was developed using high-performance liquid chromatography/tandem mass spectrometry (HPLC-MS/MS) with an electrospray ionization source (ESI) in...
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Easily Fabricated Ion Source for Characterizing Complex Organic Mixtures by Direct Analysis in Real Time Mass Spectrometry

RSC - Anal. Methods latest articles - Fri, 07/21/2017 - 09:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00971B, PaperKathleen Upton, Katherine Schilling, Jesse Beauchamp
The increasing use of atmospheric pressure mass spectrometry has led to the development of many ambient ionization sources, for which sampling versatility and low cost are desired features. One such...
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Direct Quantitative Analysis for Natural Moisturizing Factors (NMF) in Stratum Corneum by Direct Analysis in Real Time Mass Spectrometry (DART-MS)

RSC - Anal. Methods latest articles - Fri, 07/21/2017 - 09:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01177F, PaperKatsuyuki Maeno, Yasuo Shida, Haruo Shimada
Analyzing the natural moisturizing factor (NMF) in the stratum corneum (SC), such as the determination of amino acids, pyrrolidone carboxylic acid, and urocanic acid, is important in dermatology research. Here,...
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Monitoring Trace Levels of Hydroxy Aromatic Compounds in Urine Matrices by Bar Adsorptive Microextraction (BA[small mu ]E)

RSC - Anal. Methods latest articles - Fri, 07/21/2017 - 08:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01410D, PaperNuno Neng, Jose Manuel Florencio Nogueira
In this study, the enhancement for trace analysis of hydroxy aromatic compounds (HAC), such as phenol, hydroquinone, catechol and resorcinol, in urine matrices is proposed using bar adsorptive microextraction combined...
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Pentafluorophenyl bonded phase separation: The assay of Australian antioxidant formulation of ascorbic acid, rutin and hesperidin

RSC - Anal. Methods latest articles - Thu, 07/20/2017 - 06:09
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01505D, PaperAdel Michael, Andrew Shalliker
This work describes two novel validated HPLC methods for the separation and determination of potent antioxidant formulation. The compounds of interest are ascorbic acid, rutin and hesperidin. Two pentafluorophenyl bonded...
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Chiral pyrethroid insecticide fenpropathrin and its metabolite: enantiomeric separation and pharmacokinetic degradation in soils by reverse-phase high-performance liquid chromatography

RSC - Anal. Methods latest articles - Thu, 07/20/2017 - 06:09

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY01124E, PaperPing Zhang, Qian Yu, Yuhan He, Wentao Zhu, Zhiqiang Zhou, Lin He
The enantiomeric separation of fenpropathrin enantiomers on Lux Cellulose-1, Lux Cellulose-3 and Chiralpak IC chiral columns as well as enantioselective degradation of fenpropathrin in soil were investigated by reverse-phase high-performance liquid chromatography (RP-HPLC).
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Development of a Certified Reference Material of Human Serum Albumin: Certification and Value Assignment via Amino Acid Analyses

RSC - Anal. Methods latest articles - Wed, 07/19/2017 - 09:52
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01415E, PaperTomoya Kinumi, Yohei Sakaguchi, Akiko Takatsu
Serum albumin is widely used as the standard material for various protein quantifications. Some commonly used methods to quantify albumin include the bromocresol green and bromocresol purple methods that use...
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UPLC-MS/MS method for determination of schisandrin in rat plasma and brain microdialysates: application to a comparative pharmacokinetic and brain distribution study in normal and Alzheimer's disease rats

RSC - Anal. Methods latest articles - Wed, 07/19/2017 - 09:52
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01546A, PaperBinbin Wei, Mingyan Liu, Zaixing chen, Minjie Wei
Abstract Schisandrin is the major active ingredient of S. chinensis, which provides an anti-AD activity. The objective of this study was to develop a method to study on the comparative...
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