Analytical Chemistry News

Split aptamer-based imaging solution for visualization of latent fingerprints

RSC - Anal. Methods latest articles - Sun, 04/15/2018 - 22:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00538A, PaperXiaojuan Liu, Xiuyuan Li, Yingying Lu, Jiabing Cao, Feng Li
An efficient method for detecting latent fingerprints (LFPs) is very important for personal identification in forensic science. Herein, a simple label-free strategy was designed for the visualization of LFPs by...
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Key factors in FTIR spectroscopic analysis of DNA: the sampling technique, pretreatment temperature and sample concentration

RSC - Anal. Methods latest articles - Sun, 04/15/2018 - 22:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00386F, PaperYahong Han, Lujia Han, Yumei Yao, Yanfei Li, Xian Liu
Fourier transform infrared (FTIR) spectroscopy has been considered as a powerful tool for analysing the characteristics of deoxyribonucleic acid (DNA) regardless of physical states, sample amounts and the molecular weight...
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Sensitive electrochemical sensor for ofloxacin based on graphene/ zinc oxide composite film

RSC - Anal. Methods latest articles - Thu, 04/12/2018 - 04:35
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00127H, PaperXiaojing Si, Youli Wei, Chaolin Wang, Li Li, Yaping Ding
A facile and novel preparation strategy based on electrochemical techniques for the fabrication of electrodeposited graphene (GR) and zinc oxide (ZnO) nanocomposite modified electrode (ZnO/GR/GCE) was developed to determine ofloxacin....
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Highly selective and sensitive optical probe for Fe3+ base on a well water-soluble squarylium dye

RSC - Anal. Methods latest articles - Thu, 04/12/2018 - 02:33
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C7AY02948A, PaperZongguang Xu, Mengying Jiang, Chen Zhang, Jinfeng Mei, Zhongyu Li, Song Xu, Liping Wang
A highly selective and sensitive water-soluble optical probe based on a squarylium dye, 2,3,3-Trimethyl-3H-indolenine-5-sulfonate squaraine (SQ) has been successfully synthesized. The as-prepared SQ can efficiently recognize Iron (III) ion with...
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A Novel Method for the Presumptive Identification of Heterocyclic Amines of Forensic Interest Using Photoluminescent Copper(I) Iodide Cluster Compounds

RSC - Anal. Methods latest articles - Tue, 04/10/2018 - 09:57
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00227D, PaperDavid J Nash, Deepti Siddhanti, Amanda F Wendt, Rachel A Penabade, Kevin Bertrand, Andilys Andino, Krisia Smith, Sandra M Hick, Kyle Kawamoto, Andrea C Ortiz, Francisco Sepulveda, Wayne K Moorehead, Jay R Vargas, Richard G Blair
The use of color tests for the presumptive identification of illicit substances has been an important tool used by law enforcement to establish probable cause for decades. However, recently color...
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Simple "turn-on" fluorescent biosensor for sensitive detection of exonuclease III activity through photoinduced electron transfer and self-hybridization of one DNA probe

RSC - Anal. Methods latest articles - Tue, 04/10/2018 - 03:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00631H, PaperQiang Liu, Jinyu Lian, Mei Liu, Yan Jin, Baoxin Li
Exonuclease III (Exo III) plays crucial roles in maintaining the genome stability. Herein, a turn-on fluorescent strategy for detection of Exo III activity is developed. In this strategy, one poly(CG)...
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Exploring MBTH as spectrophotometric probe for total phenolic compounds determination in beverage samples

RSC - Anal. Methods latest articles - Tue, 04/10/2018 - 01:17
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00464A, PaperBruna da Silva Granja, Jose Ricardo Honorio de Mendonca Filho, Woodland de Souza Oliveira, Josue Carinhanha
In this work, we propose an alternative method using MBTH (3-methyl-2-benzothiazolinone hydrazine) as spectrophotometric probe for the determination of total phenolic compounds. The method is based on oxidative coupling reaction...
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Using a PC camera to determine the concentration of Nitrite, Ammonia Nitrogen, Sulfide, Phosphate, and Copper in Water

RSC - Anal. Methods latest articles - Tue, 04/10/2018 - 00:16
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00312B, PaperXinyue Bao, Sheng Liu, Wangan Song, H. W. Gao
To quickly and simply determine the concentration of compounds in water, a simple method based on an ordinary computer camera was proposed and a device was designed. The measuring device...
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One-step detection of hexokinase activity using personal glucose meter

RSC - Anal. Methods latest articles - Mon, 04/09/2018 - 23:16
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00498F, CommunicationJie Bai, Liyan Liu, Yanmei Han, Congcong Jia, Cuixia Liang
Hexokinase (HK) is the first key enzyme in metabolic and glycolytic pathways. Aberrations in HK activity may result in various human diseases. In this study, we present a novel, one-step,...
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Simple multimodal detection of selenium in water and vegetable samples by catalytic chromogenic method

RSC - Anal. Methods latest articles - Mon, 04/09/2018 - 23:16
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00265G, Paperyuhao xiong, Fang Li, Jingwen Wang, Ailing Huang, Mei Wu, Zhi Zhang, Dongjian Zhu, Wei Xie, Zhenhua Duan, Linjing Su
The determination of selenium (Se) has garnered increasing interest because of its importance for life as a nutrient element as well as its toxicology. Herein, a simple multimodal colorimetric method...
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Identification and quantification of microplastics in table sea salts using micro-NIR imaging methods

RSC - Anal. Methods latest articles - Mon, 04/09/2018 - 05:02
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00125A, PaperJIXIONG ZHANG, Kuangda Tian, Chunli Lei, Shungeng Min
Microplastics have been one of the most serious environmental concerned pollutants over recent decades. While these pollutants have detected not only in the marine biota, but also in abiotic sea...
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A fluorescent colorimetric azo dye based chemosensor for detection of S2- in perfect aqueous solution and its applications in real sample analysis and molecular logic gate

RSC - Anal. Methods latest articles - Mon, 04/09/2018 - 03:01
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00470F, PaperAmit Kumar Manna, Jahangir Mondal, Rukmani Chandra, Kalyani Rout, Goutam Kumar Patra
A simple azo-dye based bis-Schiff base chemosensor L has been designed, synthesized and characterized by NMR, IR spectroscopy, ESI-MS and elemental analyses. The chemosensor L can successfully detect sulfide ion...
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Tea quality testing using 6B pencil lead as an electrochemical sensor

RSC - Anal. Methods latest articles - Mon, 04/09/2018 - 03:01
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00557E, PaperNANDIMALLA VISHNU, Mansi Gandhi, Sushmee Badhulika, Annamalai Senthil Kumar
Isomers of dihydroxy benzene (DHB) like 1,2-DHB, 1,3-DHB and 1,2,3-trihydroxy benzene (1,2,3-THB) are the functional constituent of tea polyphenols. Herein, we report an elegant 6B pencil lead for the real-time...
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Supercritical CO2 Extraction for the Determination of Tetrachloroethylene Residues in Dry-Cleaned Apparels

RSC - Anal. Methods latest articles - Sun, 04/08/2018 - 22:50
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00474A, PaperYidan Liu, Kejie Fu, Qibei Bao, Mingbo Ma, Wenlong Zhou
Tetrachloroethylene (PERC) is still one of the most widely used dry cleaning agents in the world. It is, however, a toxic substance to the human body which could damage the...
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Fabrication of SiO2@COF5 microspheres and its application in high performance liquid chromatography

RSC - Anal. Methods latest articles - Sat, 04/07/2018 - 04:07
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00459E, PaperShulei Wang, Lingyi Zhang, Ruili Xiao, Haihong Chen, Zhanying Chu, Weibing Zhang, Fan Liu
The structural regularity, atomically precise design, high surface area and adsorption affinity make covalent-organic frameworks (COFs) attractive as novel stationary phases in chromatography. In this paper, an in-situ growth strategy...
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The Electrochemical Detection of Cu(II) Using Amino Functionalized MgFe2O4/Reduced Graphene Oxide Composite

RSC - Anal. Methods latest articles - Fri, 04/06/2018 - 12:53
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00452H, PaperJuncui Xu, Zhenyu Li, Xianming Yue, Fazhi Xie, Shiquan Xiong
The amino functionalized MgFe2O4/reduced graphene oxide (rGO) composite by combination MgFe2O4/rGO with 1,6-hexanediamine (HDA) was prepared and employed for the electrochemical detection of Cu(II) ions in this study. The composite...
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Ratiometric method for oxidation mapping of metallic systems

RSC - Anal. Methods latest articles - Thu, 04/05/2018 - 17:27
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00241J, PaperCarina Gaviglio, Guillermo Carrone
In this work an imaging method used for studying metallic systems oxidation is presented. This implementation monitors changes on molecular absorption of visible light with a redox probe, a ruthenium...
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A Tip-Gap Meshing like Bilayer SERS Substrate for Highly Sensitive Detection

RSC - Anal. Methods latest articles - Thu, 04/05/2018 - 08:11
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00530C, PaperLiang Lv, Junrong Li, Wei Fang, Aiguo Shen, Jiming Hu
Tips of noble metallic nanostructures and the gaps between closely packed noble metallic nanostructures are widely claimed as hot-spots for SERS sensing. A significant amount of effort and expertise have...
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Automatic solid-phase extraction by programmable flow injection coupled to chromatographic fluorimetric determination of fluoroquinolones

RSC - Anal. Methods latest articles - Thu, 04/05/2018 - 06:11
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00327K, PaperPatricia Lisandri Souza Peixoto, Eduarda M. P. Silva, Marcelo V. Osorio, Luisa Barreiros, Jose Luis Fontes Costa Lima, Marcela A. Segundo
Fluoroquinolones are broad-spectrum bactericidal agents applied for the treatment of human and veterinary diseases. Their common use and their incorrect disposal foster environmental contamination, namely on water resources, increasing the...
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Electrospun polyamide/graphen oxide nanocomposite as a novel fiber coating

RSC - Anal. Methods latest articles - Thu, 04/05/2018 - 03:09
Anal. Methods, 2018, Accepted Manuscript
DOI: 10.1039/C8AY00404H, PaperShokooh Ehteshami, Alireza Feiabakhsh, Amir Mohsen Sarrafi, Homayon Ahmad Panahi, Ali Roostaie
In this study, a novel solid phase microextraction fiber coating based on polyamide-graphene oxide nanocomposite was prepared using electrospinning technique on stainless steel wire as a robust substrate. Scanning electron...
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