Analytical Chemistry News

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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Proficiency testing of sampling

RSC - Anal. Methods latest articles - Thu, 07/06/2017 - 09:16

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY90092A, AMC Technical Brief Analytical Methods Committee AMCTB No. 78
General guidelines for the proficiency testing of sampling are required to handle the special complications involved.
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Characterization of suspected dermal fillers containing hyaluronic acid

RSC - Anal. Methods latest articles - Thu, 07/06/2017 - 09:16

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY01130J, PaperCeline Vanhee, Bart Desmedt, Sebastien Baudewyns, Angelique Kamugisha, Melissa Vanhamme, Jean-Luc Bothy, Sona Kovackova, Patricia Courselle, Eric Deconinck
Hyaluronic acid (HA) has important applications in the field of orthopedics, ophthalmology and cosmetics.
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Colorimetric assay for simultaneous detection of Hg2+ and Ag+ based on inhibiting the peroxidase-like activity of core-shell Au@Pt nanoparticles

RSC - Anal. Methods latest articles - Thu, 07/06/2017 - 09:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01317E, PaperChi-Fang Peng, Ying-Ying Zhang, Li-Ying Wang, Zheng-Yu Jin, Guang Shao
In this study, peroxidase-mimicking core-shell Au@Pt nanoparticles (Au@Pt NPs) were synthesized, and both Hg2+ and Ag+ were found to intensively inhibit the catalytic activity of Au@Pt NPs. The interactions between...
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A simple and sensitive electrochemical detection of furazolidone based on Au nanoparticles functionalized graphene modified electrode

RSC - Anal. Methods latest articles - Wed, 07/05/2017 - 10:04
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01494E, PaperBaoshan He, Gengan Du
A new sensor using a glassy carbon electrode modified with graphene and Au nanoparticles (Gr/Au/GCE) was designed to investigate the electrochemical behavior of furazolidone (FZD). The morphology and nature of...
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ZnO-RGO modified electrode coupled to microwave digestion for determination of trace cadmium and lead in six species fish

RSC - Anal. Methods latest articles - Wed, 07/05/2017 - 07:02
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01574G, PaperWen Zhang, Yiwei Xu, Xiaobo Zou
A composite of ZnO nanoparticle and reduced graphene oxide (RGO) is employed as sensing interface to constitute a practical electrode for determination of cadmium (Cd2+) and lead (Pb2+). Suspension composing...
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Production and evolution of a ScFv antibody for immunoassay of residual phenothiazine drugs in meat based on computational simulation

RSC - Anal. Methods latest articles - Tue, 07/04/2017 - 07:44
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01103B, PaperFang Shu Shi, Lei Zhang, Wan Qiu Xia, Jing Liu, Hui Cai Zhang, Jian Ping Wang
In this study, the gene of single chain variable fragment (ScFv) from a hybridoma cell strain excreting the monoclonal antibody for 2-chlorophenothiazine was directly transformed into E. coli to express...
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Development and validation of a novel fluorometric sensor for hydrogen peroxide monitoring in exhaled breath condensate

RSC - Anal. Methods latest articles - Mon, 07/03/2017 - 10:32
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01535F, PaperAbolghasem Jouyban, elaheh rahimpour, vahid jouyban, maryam Khoubnasabjafari, Hossein Abdolmohammad-Zadeh
A novel fluorometric sensor based on catalyzed 5-aminosalicylic acid (5-ASA)/H2O2 system was developed to detect trace levels of H2O2 in exhaled breath condensate (EBC). It relies on the oxidative conversion...
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Study of the Performance of a Resolution Criterion to Characterise Complex Chromatograms with Unknowns or Without Standards

RSC - Anal. Methods latest articles - Mon, 07/03/2017 - 08:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00399D, PaperJose Antonio Navarro-Huerta, Tamara Alvarez-Segura, Jose Ramon Torres-Lapasio, M. C. C. Garcia-Alvarez-Coque
The search of the best conditions in liquid chromatography is routinely carried out with the information provided by standards. However, there are samples with insufficient knowledge about their chemical composition....
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