Analytical Chemistry News

Determination of herbicide pyraclonil residue in rice, soil and water using High-performance liquid chromatography/tandem mass spectrometry

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

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)

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)

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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Direct electrochemistry and electrocatalysis of myoglobin immobilized in calcium alginate-graphene microspheres films

RSC - Anal. Methods latest articles - Wed, 07/19/2017 - 09:52
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01364G, PaperChong Yu, Hong Sun, Shifeng Hou
In the present work, calcium alginate-graphene (CA-graphene) microspheres have been prepared and used to immobilize myoglobin (Mb) for fabricating electroactive Mb-CA-graphene microspheres thin films on the electrode surface. The morphology...
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The seeded-synthesis of core-shell Au dumbbells with inbuilt Raman molecules and their SERS performance

RSC - Anal. Methods latest articles - Wed, 07/19/2017 - 05:49

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY01449J, PaperTao Jiang, Xiaolong Wang, Jing Tang, Jun Zhou, Chenjie Gu, Shiwei Tang
Core-shell Au dumbbells with inbuilt Raman molecules were synthesized by a seeded reduction method using core-shell Au nanorod (NR)@PSPAA nanoparticles as the seed.
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A sensitive colorimetric aptasensor with triple-helix molecular switch based on peroxidase-like activity of DNAzyme for ATP detection

RSC - Anal. Methods latest articles - Wed, 07/19/2017 - 05:49
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01381G, PaperKosar Shahsavar, Morteza Hosseini, Ehsan Shokri, Mohammad Reza Ganjali, Huangxian Ju
Abstract A DNAzyme-based colorimetric aptasensor has been fabricated for fast readout and facile detection of adenosine triphosphate (ATP). The sensor consists of ATP-specific aptamer flanked with cytosine-rich arms at both...
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Screening active anti-breast cancer compounds from Cortex Magnolia Officinalis by MCF-7 cell membrane chromatography coupled with UHPLC-ESI-MS/MS

RSC - Anal. Methods latest articles - Tue, 07/18/2017 - 11:34
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01213F, PaperXiaoshuang He, Ping Zhang, Muhammad Saqib, Sicen Wang, Xiaofang Hou
Breast cancer is one of the most frequent female malignant tumors. Extracts from Cortex Magnolia Officinalis (CMO) have shown the ability to inhibit the growth of breast cancer cells. In...
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Ligandless dispersive liquid-liquid microextraction combined with syringe to syringe back extraction for the determination of lead in water samples by flame atomic absorption spectrometry

RSC - Anal. Methods latest articles - Tue, 07/18/2017 - 10:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01324H, PaperLi Yao, Wenzhi Xu, Chaowen Lin, Yongqun Zhu, Fuxiang Luo, Jianhua Zhang, Haitao Liu, Liangyu Pang
Ligandless dispersive liquid-liquid microextraction (DLLME) combined with syringe to syringe back extraction was applied for the extraction and preconcentration of Pb prior to analysis by flame atomic absorption spectrometry. In...
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Coated triangular Ag nanoprisms as optical sensors: Control of stability and spectral response with a thermo-responsive polymer

RSC - Anal. Methods latest articles - Tue, 07/18/2017 - 10:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00367F, PaperBernd Abel, Christian Elsner, Andrea Prager, Axel Sobottka, Andriy Lotnyk
Silver nanoprisms (AgNPrs) have been coated with end-group functionalized thermo-responsive poly N-isopropylacrylamide (PNIPAM) synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerisation. The effect of the density of the polymer coating...
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Facile fabrication of "off-on" photoelectrochemical aptasensor for kanamycin detection based on polypyrrole/CeO2

RSC - Anal. Methods latest articles - Tue, 07/18/2017 - 10:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01611E, PaperJia-Xin Lv, Qin Lei, Qiyou Xiao, Xiaomin Li, Jieyu Huang, He Li
In this work, an "off-on" photoelectrochemical sensing strategy for determination of trace kanamycin is proposed by using kanamycin aptamer as sensing unit, gold nanoparticles (AuNPs) and polypyrrole as signal amplification...
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Optimization of subcritical water extraction of phenolic antioxidants from pomegranate (Punica granatum L.) peel by response surface methodology

RSC - Anal. Methods latest articles - Tue, 07/18/2017 - 10:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01475A, PaperLinlin Yan, Yungang Cao, Guangyao Zheng
Subcritical water extraction (SWE), a 'green' and efficient extraction technology, was applied to extract phenolic antioxidants from pomegranate peel in this study. In the single-factor experiments, the effects of extraction...
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Optimizing sampling strategies for NMR-based metabolomics of human feces: Pooled vs Unpooled analyses

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 10:15
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01465A, Technical NoteSantosh Lamichhane, Ulrik K Sundekilde, Trine Blaedel, Trine K. Dalsgaard, Lesli H Larsen, Lars Ove Dragsted, Arne Astrup, Hanne Christine Bertram
This study focused on elucidating fecal sample collection for 1H NMR-based metabolite profiling. Pooled vs unpooled feces sampling was compared to determine if single, unpooled samples are adequate and representative...
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Fluorescent aptasensor with product-triggered amplification by exonuclease III digestion for highly sensitive ATP detection

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 09:14
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01473B, PaperShengnan He, Long Qu, Ying Tan, Feng Liu, Yu Wang, Wei Zhang, Zhiming Cai, Lisha Mou, Yuyang Jiang
Here we proposed a conceptually new amplified ATP assay by combination of exonuclease III (Exo III) with allosteric aptasensor induced by ATP with graphene oxide (GO) assistant. The assay needs...
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Prediction of fatty methyl esters and physical properties of soybean oil/biodiesel blends by near and mid-infrared spectra using data fusion strategy

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 09:14
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01638G, PaperAderval S. Luna, Igor C.A. Lima, Cristiane Assumpcao Henriques, Lucia R.R. Araujo, Werickson Fortunato Carvalho da Rocha, Juliana Verdan
The data fusion strategy was compared to conventional sensor methodology to evaluate the refractive index, the relative density, and the total fatty acid methyl esters in soybean oil/biodiesel blend samples...
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Surface molecular imprinted polymers based on Mn-doped ZnS quantum dots by atom transfer radical polymerization for room-temperature phosphorescence probe of bifenthrin

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 09:14
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01147D, PaperXuelian Wu, Xiaodong Lv, Jixiang Wang, Lin Sun, Yongsheng Yan
Based on the room-temperature phosphorescence (RTP) peculiarity of Mn-doped ZnS quantum dots (QDs),a bifenthrin sensor was fabricated which simultaneously coupled the molecular imprinted polymers (MIPs) on the surface of silane...
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