Analytical Chemistry News

Enhancement of peroxidase-like activity of cerium-doped ferrite nanoparticle for colorimetric detection of H2O2 and Glucose

RSC - Anal. Methods latest articles - Thu, 05/18/2017 - 10:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00750G, PaperMorteza Hosseini, Fereshte Sabet, Hossein Kahbbaz, Mustafa Aghazadeh, Farhang Mizani, Mohammad Reza Ganjali
In this report, ceria doped-ferrite nanoparticles (Ce-Fe3O4 NPs), a novel ceria nanostructure was proposed to have intrinsic peroxidase-like activity toward a classic peroxidase substrate in the presence of H2O2. Peroxidase-like...
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On-line photoionization mass spectrometric study on the mouth retention of gaseous mainstream cigarette smoke

RSC - Anal. Methods latest articles - Thu, 05/18/2017 - 10:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00493A, PaperJian Wang, Yonghua Hu, Yingbo Xu, Zhengfeng Tian, Yang Pan
Measurement on the retention of cigarette smoke components in the human mouth is important for evaluating smoking-related diseases. Here, a newly developed on-line vacuum ultraviolet photoionization time-of-flight mass spectrometry (VUV-PI-TOFMS)...
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Quantum dot probes for cellular analysis

RSC - Anal. Methods latest articles - Thu, 05/18/2017 - 07:38

Anal. Methods, 2017, 9,2621-2632
DOI: 10.1039/C7AY00018A, Critical ReviewDahai Ren, Bin Wang, Chen Hu, Zheng You
Highly fluorescent and robust semiconductor nanocrystals (known as quantum dots or QDs) play a pivotal role in biological applications.
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Enzyme-free fluorescence sensing of catechins in green tea using bifunctional graphene quantum dots

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 10:24
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00973A, PaperJian Sun, Yuezhen He, Lun Wang
The fluorescent graphene quantum dots (GQDs) provide an amusing nanoplatform which integrates uique optical properties of quantum dots and prominent electronic properties of carbon materials. However, rational design of dual...
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Sorting zamak alloys via chemometric analysis of its LIBS spectra

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 09:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01138E, PaperSabrina Messaoud Aberkane, Mahmoud Abdelhamid, fatiha mokdad, kenza yahiaoui, samira messaci, Mohamed Harith
Laser induced breakdown spectroscopy with chemometric methods have been employed for sorting zamak alloy (zinc based alloy) samples. Plasma plumes were created onto the samples surface using 50 mJ Nd:YAG...
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C-Reactive Protein: A Major Inflammatory Biomarker

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 09:23
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00711F, Critical ReviewSatish Balasaheb Nimse, Mukesh Digambar Sonawane
Inflammatory biomarkers are released during tumour growth, and they are highly associated with the stages cancer progression. C-reactive protein is one of the widely studied marker proteins, which is associated...
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A sensitive method to determine melatonin in saliva by automated online in-tube solid-phase microextraction coupled with stable isotope-dilution liquid chromatography-tandem mass spectrometry

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 09:23

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00622E, PaperAtsushi Ishizaki, Akiko Uemura, Hiroyuki Kataoka
Melatonin (MLT) plays important roles in regulating the sleep-wake cycle, and has many beneficial effects on health. A simple, rapid, and sensitive method was developed for the determination of MLT in human saliva by automated online in-tube solid-phase microextraction coupled with stable isotope-dilution liquid chromatography-tandem mass spectrometry.
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Integrating qualitative and quantitative assessment of Yougui pill, an effective formula of traditional Chinese medicine by HPLC-LTQ-Orbitrap-MSn and UPLC-QqQ-MS/MS

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00259A, PaperHaolong Liu, Feng Qiu, Baolin Bian, Xinwei Yang, Haiyan Zou, Hui Zhao, Zhenzhen Chen, Qingsong Wang, Haiyu Zhao, Lei Wang
Yougui pill (YGP) is a well-known Chinese medicine formula for its definite clinical effects on kidney-yang deficiency such as infertility. However, Aconitum carmichaeli var. carmichaeli was contained in YGP shows...
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Screen-printed graphene-based electrochemical sensor for microfluidic device

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00379J, PaperChanpen Karuwan, Anurat Wisitsoraat, Patcharin Chaisuwan, Duangjai Nacapricha, adisorn Tuantranont
This work presents a new method for mass fabrication of new microfluidic device with integrated graphene-based electrochemical electrodes by screen printing technique for in-channel amperometric detection. Graphene-based working and counter...
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Quantification of Cocaine, and Its Adulterants (Lidocaine and Levamisole) using Dragendorff Reagent allied to Paper Spray Ionization Mass Spectrometry

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00588A, PaperHeloa Santos, Aryanne Lima, Andre Mazega, Eloilson Domingos, Christopher Thompson, Adriano O. Maldaner, Paulo R Filgueiras, Boniek G. Vaz, Wanderson Romao
Thin layer chromatography is a simple, easy and cheap technique widely used in Brazilian forensic laboratories, being a screening test for the separation and identification of illicit drugs, such as...
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Plasma-based Ambient Mass Spectrometry: A Step Forward to Practical Applications

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00965H, MinireviewJin Chen, Fei Tang, Cheng'an Guo, Sichun Zhang, Xinrong Zhang
Plasma-based ambient mass spectrometry (AMS) exhibits great potential in direct analysis of raw samples with minimum pretreatment. A variety of plasma-based ionization sources have emerged and presented favorable advantages of...
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Separation and quantification of metallic nanoparticles using cloud point extraction and spectrometric methods: a brief review of latest applications

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00953D, MinireviewIngrid Hagarova
Due to the unique physical and chemical properties of metallic nanoparticles (MNPs), their use has been considerably increased in various fields. This leads to a new concern about their presence...
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Ambient Mass Spectromery in the Analysis of Compounds of Low Polarity

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00817A, Critical ReviewTiina J. Kauppila, R Kostiainen
Ambient mass spectrometry techniques that are capable of ionizing compounds of low polarity are discussed. Photoionization and plasma-based ionization are the most important ionization techniques, but in some special cases...
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One label-based fluorescence detection of a protease that cleaves the peptide bond between two specific amino acids

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00347A, PaperEunyoung Kim, Seonhwa Park, Haesik Yang
It is difficult to detect a protease that cleaves the peptide bond between two specific amino acids via fluorescence. In this study, we report a simple method for fluorescence protease detection using a readily prepared, one label based peptide.
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Development and optimisation of home-made stir bar sorptive extraction for analysis of plastic additives: application in human urine

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00696A, PaperAurelie Cortejade, Audrey. Bulete, Laura Prouteau, Saber Chatti, Cecile Cren, Emmanuelle Vulliet
The overall objective of this study was to develop an analytical method to contribute to the assessment of the exposure of humans to plastic additives, based on the use of...
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Fabrication of a flexible carbon cloth based solid contact iodide selective electrode

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00733G, PaperJ. Cincy, T. E. Milja, K. P. Prathish
Elimination of the inner filling electrolyte of classical ISEs to overcome their associated drawbacks is the major driving force for the evolution of solid contact ISEs.
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Multielement determination in medicinal plants using electrothermal vaporization coupled to ICP OES

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01021D, PaperClarissa Marques Moreira Santos, Matheus Augusto Goncalves, Adilson Ben da Costa, Fabio Andrei Duarte, Dirce Pozebon, VL Dressler
Electrothermal vaporization (ETV)-inductively coupled plasma optical emission spectrometry (ICP OES) is proposed for multielement determination in powdered medicinal plants. Simultaneous determination of As, Cd, Cr, Cu, Mn, Ni, Pb and...
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Studies of intervening factors on the performance of the naked-eye microemulsification-based method and improvement on its analytical frequency

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00795G, PaperKaren Mayumi Higa, Camila L. de Camargo, Gabriela F Giordano, Ivo P. O. Silva, Angelo Luiz Gobbi, L.T. Kubota, Renato S Lima
New investigations on the use of different amphiphiles and the improvement of the analytical frequency of the microemulsification-based method (MEC) are described in this paper. The results are important for...
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A simple design atomic emission spectrometer combined with multivariate image analysis for the determination of sodium content in urine

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01118K, PaperBruno Debus, Dmitry Kirsanov, Irina Yaroshenko, Andrey Legin
In clinical analysis the determination of alkali metals in biological samples is often performed by flame emission spectroscopy (FES). Despite its good analytical performance for determination of traces elements, FES...
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Determination of 11 photoinitiators and their migration into tea and milk by gas chromatography-tandem mass spectrometry (MSPD-GC-MS/MS)

RSC - Anal. Methods latest articles - Wed, 05/17/2017 - 06:21

Anal. Methods, 2017, Advance Article
DOI: 10.1039/C7AY00156H, PaperHuimei Cai, Shuilin Ji, Juzhou Zhang, Guangzhi Shang, Gushuai Tao, Chuanyi Peng, Guijie Chen, Ruyan Hou, Liang Zhang, Xiaochun Wan
Based on the use of multi-walled carbon nanotubes (MWCNTs) in matrix solid-phase dispersion (MSPD) extraction, a novel, rapid and reliable method was developed for the analysis of 11 photoinitiators used in food packaging ink followed by quantitation by gas chromatography-tandem mass spectrometry.
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