Analytical Chemistry News

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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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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