Analytical Chemistry News

Enzymatic Mediated Assembly of Gold Nanoparticles for Ultrasensitive Colorimetric Detection of Hepatitis C Virus Antibody

RSC - Anal. Methods latest articles - Thu, 05/25/2017 - 09:20
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01086A, PaperYu-Hong Cheng, Hao Tang, Jian-Hui Jiang
Based on aggregation of gold nanoparticles (AuNPs) induced by acetylcholinesterase-catalyzed hydrolysis reaction, we have developed a novel highly sensitive enzymatic mediated assembly of AuNPs based colorimetric method for the ultrasensitive...
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Giant magnetoimpedance based immunoassay for cardiac biomarker myoglobin

RSC - Anal. Methods latest articles - Thu, 05/25/2017 - 08:17
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00981J, PaperZhen Yang, huanhuan wang, Xinwei Dong, hailong yan, Chong Lei, Yongsong Luo
Herein, a novel method for detection of the cardiac biomarkers myoglobin (Mb) was proposed by using an integrated giant magnetoimpedance (GMI) based immunosensor. The GMI sensor integrated magnetic sensing elements...
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DETERMINATION OF BISMUTH (III) IN ENVIRONMENTAL AND PHARMACEUTICAL SAMPLES USING ORGANIC REAGENT

RSC - Anal. Methods latest articles - Thu, 05/25/2017 - 05:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00412E, PaperChitra Verma, Kavita Tapadia, Anupam Bala Soni, Ashima Sharma
A new, selective and highly sensitive nanodrop spectrophotometric (NDS) method was developed for the determination of bismuth (III) with iodide, and N-octylacetamide (N-OAA). The extraction of Bi (III)-Iodide-N-OAA complex was...
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Infrared-Atmospheric Solids Analysis Probe (IR-ASAP) Mass Spectrometry for Ambient Analysis of Volatile Compounds Without Heated Gas

RSC - Anal. Methods latest articles - Thu, 05/25/2017 - 05:16
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00874K, PaperSara Madarshahian, Milan Pophristic, Charles N McEwen
Atmospheric solids analysis probe (ASAP) mass spectrometry is an effective means for rapidly analyzing liquids, solids, or material surfaces by direct introduction into an atmospheric pressure (AP) ionization source. Sample...
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Recent Liquid Chromatographic Approaches and Developments for the Separation and Purification of Carbohydrates

RSC - Anal. Methods latest articles - Wed, 05/24/2017 - 10:08
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01094J, Critical ReviewGabe Nagy, Tianyuan Peng, Nicola Lucia Brendel Pohl
Carbohydate purification remains a bottleneck in securing analytical standards from natural sources or by chemical or enzymatic synthesis. This review highlights the scope and remaining limitations of recent approaches and...
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A facile microwave - hydrothermal synthesis of fluorescent carbon quantum dots from bamboo tar and its application

RSC - Anal. Methods latest articles - Wed, 05/24/2017 - 10:08
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01069A, PaperQian Liang, Yu-Lin Wang, Fengcai Lin, Maosheng Jiang, Pengfei Li, Biao Huang
Bamboo tar is a water-insoluble semi-solid by-product generated from bamboo charcoal processing. A simple and rapid method to convert bamboo tar into carbon quantum dots (CQDs) was developed by a...
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Fourier transform infrared spectroscopy coupled with chemometrics for determining geographical origin of kudzu root and detection and quantification of adulterants in kudzu root

RSC - Anal. Methods latest articles - Tue, 05/23/2017 - 08:59
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00876G, PaperLeQian Hu, chunling yin
Fourier transform infrared spectroscopy and chemometrics to determine the geographical origin of kudzu root and detect and quantify adulterants in kudzu root was investigated in this work. Total 150 natural...
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Square wave voltammetry enables fast quantification and evaluation of Bi3+ extraction from eye shadow samples

RSC - Anal. Methods latest articles - Mon, 05/22/2017 - 11:38
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01077J, PaperLeandro Antonio de Resende Ribeiro, Lauro Antonio Pradela-Filho, Wilson Tiago da Fonseca, Diele AG Araujo, Rosana MN Assuncao, Regina Massako Takeuchi, Andre Luiz dos Santos
In this study, a square wave anodic stripping voltammetric method was developed to quantify Bi3+ in eye shadow samples. The best results were obtained in 1.0 mol L-1 NaOH as...
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Integrated Microfluidic Chip with Nanobiosensor for Rapid and Label-free Detection of Specific Gene

RSC - Anal. Methods latest articles - Mon, 05/22/2017 - 07:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00950J, PaperCongxiao Zhang, Xuefei Lv, Yasmeen Saeed, Hong Qing, Yulin Deng
The biomolecular detection technique is tending to develop in minimization, automatization, rapidity, sensitivity and low cost, which is urgently needed as "point of care test" or "rapid test" in clinical...
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Nondestructive detection of triclosan in antibacterial hand soap using digital labelled Raman spectroscopy

RSC - Anal. Methods latest articles - Mon, 05/22/2017 - 06:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00118E, PaperXi Han, Zong Tan, Zhixuan Huang, Xiaodong Chen, Yan Gong, Qifeng Li, Kexin Xu, Da Chen
The wide use of antibacterial hand soap containing triclosan has raised the potential threat to health, and the detection of triclosan is thus extremely important. Here we introduce an efficient...
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Laser-Based Ambient Mass Spectrometry

RSC - Anal. Methods latest articles - Mon, 05/22/2017 - 06:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00997F, MinireviewSy-Chyi Cheng, Christopher Shiea, Yeou-Lih Huang, Chin-Hsiung Wang, Yi-Tzu Cho, Jentaie Shiea
Laser has been an important tool in mass spectrometry due to its multifunctional capability of desorption and ionization. However, the ionization efficiency by irradiating laser beam on sample such as...
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Fluorescence Properties and Applications of Covalent Organic Frameworks

RSC - Anal. Methods latest articles - Mon, 05/22/2017 - 06:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY01261F, MinireviewRui Xue, Hao Guo, Ting Wang, Li Gong, Yanni Wang, Jiebing Ai, Dongdong Huang, Huiqin Chen, Yang Wu
Covalent organic frameworks (COFs) are a new type of porous organic materials, which are prepared with organic building units via strong covalent bonds. The well-defined crystalline porous structures together with...
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In-situ and real-time monitoring of ultrasonic-assisted enzymatic hydrolysis process of corn gluten meal by miniature near infrared spectrometer

RSC - Anal. Methods latest articles - Mon, 05/22/2017 - 06:31
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00887B, PaperLin Luo, Yanyan Zhang, Haile. Ma, Kai Wang, Mingsheng Dong
Ultrasound treatment during proteolysis could facilitate the enzymatic hydrolysis. Degree of hydrolysis (DH) and ACE inhibiting activity of hydrolysates are the two most important factors for process control and quality...
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Fast and direct detection of metal accumulation in marine sediments using laser-induced breakdown spectroscopy (LIBS): a case study from the Bay of Cienfuegos, Cuba

RSC - Anal. Methods latest articles - Mon, 05/22/2017 - 05:30
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00578D, PaperMirella Pena-Icart, Mario Simeon Pomares Alfonso, Francisco Aquino, Carlos Alonso-Hernandez, Yoelvis Bolanos-Alvarez , Edenir Rodrigues Pereira-Filho
Laser-induced breakdown spectroscopy (LIBS) is an emerging, multi-elemental and green technique, particularly suitable for the direct analysis of solid samples. In this study, thirty-two superficial sediments collected in Cienfuegos Bay...
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Laser Induced Breakdown Spectroscopy for quantification of sodium and potassium in minced beef: a potential technique for detecting beef kidney adulteration

RSC - Anal. Methods latest articles - Thu, 05/18/2017 - 10:40
Anal. Methods, 2017, Accepted Manuscript
DOI: 10.1039/C7AY00757D, PaperYash Dixit, Maria Casado-Gavalda, Raquel Cama-Moncunnil, Xavier Cama-Moncunnill, Maria Markiewicz-Keszycka, PJ Cullen, Carl Sullivan
Beef is a rich source of important minerals, with potassium (K) being the most abundant mineral quantitatively except in cured meats where Na from the added salt predominates. This study...
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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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