Analytical Chemistry News

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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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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