收藏本站
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

Mechanistic Study and Kinetic Determination of Cu(Ⅱ) by the Catalytic Kinetic Spectrophotometric Method

ZHANG Haoshuang  LIU Li  JI Hongwei  
【摘要】:A highly sensitive and selective catalytic kinetic spectrophotometric method for the determination of Cu(Ⅱ) is proposed. It is based on the catalytic effect of Cu(Ⅱ) on the oxidation of glutathione(GSH) by potassium hexacyanoferrate(Ⅲ) in acidic medium at 25.0℃. The reaction is monitored spectrophotometrically by measuring the decrease in absorbance of oxidant at 420 nm using the fix-time method. Under the optimum conditions, the proposed method allows the determination of Cu(Ⅱ) in a range of 0-35.0 ng m L~(-1) with good precision and accuracy and the limit of detection is down to 0.04 ng m L~(-1). The relative standard deviation(RSD) is 1.02%. The reaction orders with respect to each reagent are found to be 1, 1/2, and 1/2 for potassium hexacyanoferrate(Ⅲ), glutathione and Cu(Ⅱ) respectively. On the basis of these values, the rate equation is obtained and the possible mechanism is established. Moreover, few anions and cations can interfere with the determination of Cu(Ⅱ). The new proposed method can be successfully used to the determination of Cu(Ⅱ) in fresh water samples and seawater samples. It is found that the proposed method has fairly good selectivity, high sensitivity, good repeatability, simplicity and rapidity.

知网文化
【相似文献】
中国期刊全文数据库 前20条
1 ZHANG Haoshuang;LIU Li;JI Hongwei;;Mechanistic Study and Kinetic Determination of Cu(Ⅱ) by the Catalytic Kinetic Spectrophotometric Method[J];Journal of Ocean University of China;2019年01期
2 ;Synthesis and Kinetics of a Novel Mimic with Glutathione Peroxidase Activity—Tellurium-containing Hyaluronic Acid (TeHA)[J];Chinese Chemical Letters;2006年07期
3 ;THz spectrum of reduced glutathione[J];Science in China(Series G:Physics,Mechanics & Astronomy);2005年05期
4 ;Study of Oxidation of Glutathione Treated with Hypochlorous Acid by Capillary Electrophoresis[J];Chinese Chemical Letters;2001年07期
5 ;Study of Oxidation of Glutathione by Capillary Electrophoresis[J];Chinese Chemical Letters;2001年04期
6 汪乐余,王伦,朱昌青,董玲,夏婷婷,陈红旗,卞桂荣;Spectrofluorimetric Determination of Reduced Glutathione Using Organic Nanoparticle Probes[J];Chinese Journal of Chemistry;2004年05期
7 ;Electrochemical Studies of Glutathione Monolayer Assembled on A Polycrystalline Gold Electrode[J];Wuhan University Journal of Natural Sciences;2002年01期
8 ;Effect of 2-Selenium Bridged β-Cyclodextrin,Glutathione Peroxidase Mimic on Stroke of Stroke-prone Spontaneously Hypertensive Rats[J];Chemical Research in Chinese Universities;2004年03期
9 Min Li;Sifeng Mao;Shiqi Wang;Hai-Fang Li;Jin-Ming Lin;;Chip-based SALDI-MS for rapid determination of intracellular ratios of glutathione to glutathione disulfide[J];Science China(Chemistry);2019年01期
10 王芳斌;范美意;刘又年;王建秀;曾冬铭;黄可龙;;Fabrication of ferrocenyl glutathione modified electrode and its application for detection of cadmium ions[J];Journal of Central South University of Technology;2008年01期
11 ;PLLA-PCys co-electrospun fibers for capture and elution of glutathione S-transferase[J];Science in China(Series B:Chemistry);2009年12期
12 ;STUDIES ON THE SYNTHESIS AND ANTITUMOR ACTIVITY OF AMINO ACID ESTER DERIVATIVES OF BENZISOSELENAZOLONE[J];Chinese Chemical Letters;1992年03期
13 ;Molecular dynamics simulation study on zwitterionic structure to maintain the normal conformations of Glutathione[J];Science in China(Series B:Chemistry);2007年05期
14 Qiao Song;Zhi Luo;童新明;Yi Du;Yanbin Huang;;Glutathione as the End Capper for Cyclodextrin/PEG Polyrotaxanes[J];Chinese Journal of Polymer Science;2014年08期
15 ;Studies on Increasing the Activity of Selenium-Containing Abzyme (Ⅰ)——Synthesis, Characterization and Properties of Hapten and Antigen[J];Chemical Research in Chinese Universities;1995年02期
16 ;Direct electrochemistry and electrocatalysis of horseradish peroxidase immobilized on L-glutathione self-assembled monolayers[J];Chinese Chemical Letters;2008年08期
17 ;Permeation study of the potassium channel from streptomyces Lividans[J];Chinese Science Bulletin;2004年11期
18 程凌江,蒋丽金,马金石;THE ATTACHMENTS OF PHYCOBILINS TO CYSTEINYL RESIDUES[J];Science in China,Ser.B;1992年06期
19 ;Electrochemical Determination of Reduced Glutathione at Multiwalled Carbon Nanotubes/Poly(bromocresol green) Modified Glassy Carbon Electrode[J];Chemical Research in Chinese Universities;2011年06期
20 ;Nickel and potassium co-modified β-Mo_2C catalyst for CO conversion[J];Journal of Natural Gas Chemistry;2009年02期
中国重要会议论文全文数据库 前10条
1 Chang Xu;Bingzhu Yin;;A highly selective colorimetric and ratiometric fluorescent probe for glutathione in the water[A];全国第十七届大环化学暨第九届超分子化学学术研讨会论文摘要集[C];2014年
2 Hongmei Wu;Yu Guo;Jianfang Cao;;Synthesis of a Novel Metal-organic Cyclohelicate Compound for Detection of Glutathione[A];中国化学会第八届全国配位化学会议论文集-论文[C];2017年
3 ;Design and Synthesis of Supramolecule-based Artificial Enzymes[A];2008年两岸三地高分子液晶态与超分子有序结构学术研讨会暨第十次全国高分子液晶态与超分子有序结构学术论文报告会论文集[C];2008年
4 ;Interaction of Glutathione and Sodium Selenite Investigated by ESI Tandem Mass Spectrometry[A];第五届全国化学生物学学术会议论文摘要集[C];2007年
5 Di Cheng;Xiao-fei Li;Huai-xia Yang;;Spectrophotometric determination of pyrogallol using the system of potassium ferricyanide and Fe(Ⅲ)[A];河南省化学会2016年学术年会论文摘要集[C];2016年
6 Gong XY;Yin YH;Huang ZJ;Lu B;Xu PH;Zheng H;;Preparation,characterization and in vitro release study of a glutathione-dependent polymeric prodrug Cis-3-(9H-purin-6-ylthio)-acrylic acid-graft-carboxymethyl chitosan[A];2012年湖北生物产业发展高端论坛暨湖北省生物工程学会2012年度学术交流会论文汇编[C];2012年
7 Lingyun Wang;Xianggen Chen;Derong Cao;;A novel fluorescence turn-on probe based on diketopyrrolopyrrole-nitroolefin conjugate for highly selective detection of glutathione over cysteine and homocysteine[A];中国化学会第四届卟啉与酞菁学术研讨会论文集[C];2017年
8 Changgui Zhao;Bingzhu Yin;;A highly sensitive long-wavelength fluorescence probe for GSH selective detection[A];全国第十八届大环化学暨第十届超分子化学学术讨论会会议论文集(下)[C];2016年
9 ;Intracellular Glutathione Detection using MnO_2-Nanosheet-Modified Upconversion Nanoparticles[A];中国化学会第28届学术年会第4分会场摘要集[C];2012年
10 ;Synthesis and Characterization of one Novel 1D Compound Based on Keggin-type Polyoxometalates and Potassium-sulfanilamide Complex Subunits[A];中国化学会第四届全国多酸化学学术研讨会论文摘要集[C];2011年
中国知网广告投放
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978