Analytical Chemistry News

A Novel Storage and Extraction Method using Solid-Phase Adsorption and Ultrasonic-Assisted Nebulization Extraction Coupled to Solid Phase Extraction

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 09:14
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01036B, PaperPeixu Zhang, wen xu Li, Li Cui, Jiafeng Chen, Yan Qu, Xiaozhong Wang, Qian Wu, Ying Liu, Chunkui Zhou, Yongri Jin
A novel storage and extraction method was developed for biofluids. Plasma spiked with four types of minor ginsenosides (Rg2, Rg3, Rh1 and Rh2) was used as a model biofluid to...
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Proton-Propelled Methyl-tert-butyl Ether Extraction for High Efficient Mass Spectrometric Analysis of Phospholipid

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 09:14
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01250K, Communicationbei Nie, Qiuhong Zhou, Xiaoxue Ye
ABSTRACT Proton-driven molecular partitioning on aqueous/organic interfaces has significantly improved collection efficiency of bipolar phospholipids during the two-phase liquid/liquid extraction and rendered the supra-sensitivity in the tandem mass spectrometric analysis....
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Quantification of the contents in biojet fuel blends using near infrared spectroscopy and multivariate calibration

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 09:14
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01550J, PaperLuciana Assis Terra, Paulo R Filgueiras, Julio Laurentino Alves, Ronei Jesus Poppi
In this work a methodology was developed for quantification of the contents of petroleum-derived, hydroprocessed esters and fatty acids (HEFA) and farnesane jet fuels in binary and ternary mixtures using...
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An electrochemical aptasensor for detection of bovine interferon gamma

RSC - Anal. Methods latest articles - Mon, 07/17/2017 - 06:10
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01313B, PaperBruno P Crulhas, Dustin J Hadley, Ying Liu, Dong-Sik Shin, Gulnaz Stybayeva, Meruyert Imanbekova, Ashley E Hill, valber A Pedrosa, Alexander Revzin
Bovine tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis (MTB) in which it is hard to identify the pathological symptoms. Release of bovine interferon gamma (BoIFN-[gamma]) by T-cells...
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A novel ball-in-ball hollow NiCo2S4 sphere based sensitive and selective nonenzymatic glucose sensor

RSC - Anal. Methods latest articles - Fri, 07/14/2017 - 10:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01640A, PaperDinglong Chen, Huiying Wang, Minghui Yang
In this work, we developed a low-cost and sensitive electrochemical sensor for nonenzymatic detection of glucose based on ball-in-ball hollow ternary nickel cobalt sulfide spheres (NiCo2S4). A facile anion exchange...
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Selective 1D TOCSY NMR method for the determination of glutathione in white wine

RSC - Anal. Methods latest articles - Fri, 07/14/2017 - 10:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01463E, PaperVassiliki G. Kontogianni, Constantinos G. Tsiafoulis, Ioannis G. Roussis, Ioannis P. Gerothanassis
Glutathione, a naturally occurring tripeptide, is the main thiol in must and wine which inhibits must oxidative browning and prevents the loss of wine aroma. In the present work a...
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Development of competitive 'pseudo'-ELISA assay for measurement of cocaine and its metabolites using molecularly imprinted polymer nanoparticles.

RSC - Anal. Methods latest articles - Fri, 07/14/2017 - 10:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01523B, PaperYadiris Garcia Almanza, Katarzhina Smolinska-Kempisty, Eduardo Pereira, Elena Piletska, Sergey A Piletsky
The analytical test-system for cocaine, benzoylecgonine and norcocaine was developed in ELISA format using molecularly imprinted polymeric nanoparticles (nanoMIPs) as synthetic recognition elements that were produced using solid-phase synthesis approach....
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A New fluorescence chemosensor for Zn2+ with a remarkable red shift in emission spectra

RSC - Anal. Methods latest articles - Fri, 07/14/2017 - 10:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01568B, PaperReza Azadbakht, Mostafa Koolivand, Javad Khanabadi
A new fluorescent chemosensor with a remarkable red shift in emission spectra based on naphthalene groups for quantification of zinc ions, was synthesized and investigated. It was found that sensor...
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Research on beef tenderness detection method using bionic mastication system based on pressure sensor

RSC - Anal. Methods latest articles - Fri, 07/14/2017 - 09:20
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00802C, PaperXiaodan Wang, Hongmei Wang, Yingming Cai, Jiahui Jin, Lingtao Zhu, Liping Xu
Beef tenderness is a significant factor which influences consumer purchase opinion. Conventional assessment of tenderness requires lengthy procedures with tedious sample preparations. An objective and rapid bionic mastication system combined...
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Efficient removal and trace determination of chlorophenols from water by mixed hemi/ad-micelle ionic liquid-coated magnetic graphene oxide and adsorption mechanism

RSC - Anal. Methods latest articles - Thu, 07/13/2017 - 11:08
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01241A, PaperWei Liu, Jun Zha, Xiaoyan Meng, Jianrong Wu, Cheng Sun, panzi Qiu, Meriem Fizir, Hua He
A mixed hemimicelles magnetic solid phase extraction (MHMSPE) based on magnetic graphene oxide nanoparticles (MGONPs) and 1-hexadecyl-3-methylmidazoliumbromide (C16mimBr) was developed for the efficient removal and trace determination of chlorophenols (CPs)...
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Square-wave adsorptive anodic stripping voltammetric determination of ramipril using an electrochemical sensor based on nanostructured carbon black

RSC - Anal. Methods latest articles - Thu, 07/13/2017 - 10:07
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01479A, PaperTiago Almeida Silva, Orlando Fatibello-Filho
A novel and alternative electroanalytical method for the determination of ramipril (RAM) using a glassy carbon electrode (GCE) modified with nanostructured carbon black (CB) is reported. The electrochemical sensor was...
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Versatility of Carbon Paste Electrode Coupled to Differential Pulse Voltammetry for Determination of Lisinopril with its Associations (Hydrochlorothiazide and Amlodipine)

RSC - Anal. Methods latest articles - Wed, 07/12/2017 - 11:51
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01455D, PaperCamila Farinha Valezi, Ana Paula Pires Eisele, Elen Romao Sartori
Lisinopril (LNP) is angiotensin converting enzyme inhibitor found formulated with a diuretic, hydrochlorothiazide (HCTZ), or with a calcium channel blocker, amlodipine (AML), in a single tablet for treatment of hypertension....
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Development and application of a comprehensive analytical workflow for the quantification of non-volatile low molecular weight lipids on archaeological stone tools

RSC - Anal. Methods latest articles - Wed, 07/12/2017 - 09:50

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY01304C, PaperSusan Luong, Elspeth Hayes, Emma Flannery, Thomas Sutikna, Matthew[space]W. Tocheri, E. Wahyu Saptomo, Jatmiko, Richard G. Roberts
Use-residues are identified on stone tools in the humid tropics, using GC-MS/MS and a sampling strategy that monitors environmental contamination.
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High-performance Electrochemical Dopamine Sensor based on Platinum-nickel Bimetallic Decorated Poly(dopamine)-functionalized Reduced Graphene Oxide Nanocomposite

RSC - Anal. Methods latest articles - Wed, 07/12/2017 - 08:49
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00717E, PaperYu Shen, Qinglin Sheng, Jianbin Zheng
A nanocomposite of platinum-nickel bimetallic decorated poly(dopamine)-functionalized reduced graphene oxide (Pt-Ni/PDA/rGO) was prepared by a facile and attractive method. Further, a high-performance electrochemical sensor for the detection of dopamine was...
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Methods to Coalesce Fluorinated Pickering Emulsions

RSC - Anal. Methods latest articles - Tue, 07/11/2017 - 05:35
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01289F, Technical NoteMing Pan, Fengjiao Lyu, Sindy K Y Tang
This work surveys methods to coalesce water-in-fluorocarbon emulsions stabilized by amphiphilic nanoparticles (NPs) for applications in droplet microfluidics. Most droplet assays to-date have relied on one type of surfactants consisting...
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Amino-terminated hyper branched polyamidoamine polymers grafted magnetic graphene oxide nano sheets as efficient sorbent for extraction of selective serotonin reuptake inhibitors from plasma sample

RSC - Anal. Methods latest articles - Mon, 07/10/2017 - 03:15
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01166K, PaperZahra Lotfi, Hassan Mousavi, S. Maryam Sajjadi
In this study, covalently bonded third generation dendrimer to magnetic graphene oxide nanosheets (DMGO) were prepared. Taking advantages of large surface area, excellent biocompatibility and abundant functional groups, DMGO was...
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Chromatographic separation and mass spectrometric analysis of N-acetyl-L-cysteine-protected palladium nanoparticles

RSC - Anal. Methods latest articles - Mon, 07/10/2017 - 03:15
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01146F, PaperLei Zhang, Qin Hu, Zhongping Li, Yan Zhang, Dongtao Lu, Shaomin Shuang, Martin M. F. Choi, Chuan Dong
In this work, water-soluble N-acetyl-L-cysteine-protected palladium nanoparticles (NAC-PdNPs) were synthesized. The obtained NAC-PdNPs was well characterised by UV-vis absorption spectroscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. The...
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dPCR - the digital polymerase chain reaction

RSC - Anal. Methods latest articles - Fri, 07/07/2017 - 07:26

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90093G, AMC Technical Brief Analytical Methods Committee AMCTB No. 79
The digital polymerase chain reaction provides an important step forwards in the quantitative study of DNA.
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A novel two-photon fluorescent probe for the selective detection of hydrogen peroxide based on a naphthalene derivative

RSC - Anal. Methods latest articles - Thu, 07/06/2017 - 10:17
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01249G, PaperQiu-Juan Ma, Xian Li, Jing Zhang, Xiaoyan Zhu, Liyi Zhou, Hongwen Liu
In this study, we report a novel two-photon fluorescent probe for monitoring hydrogen peroxide. Probe 1 consists of a naphthalene backbone and a boric acid ester which was used as...
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Probing for corticotropin-releasing hormone (CRH) in human blood for doping control purposes using immunoaffinity purification and LC-HRMS/MS

RSC - Anal. Methods latest articles - Thu, 07/06/2017 - 10:17
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01349C, PaperAndre Knoop, Andreas Thomas, Martin Bidlingmaier , Philippe Delahaut, Wilhelm Schanzer, Mario Thevis
Corticotropin-releasing hormone (CRH), a peptide hormone whose secretion leads to adrenal cortisol release, is classified as prohibited substance by the World Anti-Doping Agency (WADA). In order to comprehensively enforce anti-doping...
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