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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：无
其他任职：精细化工国家重点实验室副主任、大连理工大学-瑞典皇家工学院分子器件联合研究中心主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：应用化学. 精细化工
办公地点：大连理工大学西部校区化工实验楼E-223
联系方式：0411-84986493
电子邮箱：sunlc@dlut.edu.cn
Determination of EDTA species in water by square-wave voltammetry using a chitosan-coated glassy carbon electrode
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论文类型：期刊论文
发表时间：2003-10-01
发表刊物：WATER RESEARCH
收录刊物：Scopus、SCIE、EI、PubMed
卷号：37
期号：17
页面范围：4270-4274
ISSN号：0043-1354
关键字：ethylenediaminetetraacetic acid (EDTA); square-wave voltammetry; chitosan
摘要：The electrochemical behavior of Fe(EDTA)(-/2-) on a chitosan-coated glassy carbon electrode (GCE) and the determining method of the EDTA species in water samples by square-wave voltammetry (SWV) have been investigated. Fe(EDTA)(-) can be adsorbed on the positively charged chitosan membrane assembled on a GCE and be reduced at a potential of -0.095 V vs. Ag/AgCl. On the chitosan-coated GCE, the cathodic stripping peak current is proportional to the concentration of EDTA after the operating parameters of SWV were optimized. The measuring range of EDTA was from 2.0 x 10(-6) to 8.0 x 10(-5) mol/L with a correlation coefficient of r = 0.998 and a detection limit of 2.0 x 10(-7) mol/L. The relative standard deviation was less than 6.4% (n = 5) and the recovery was in the range of 98-105% for the determination of practical samples. The result was consistent with that from the HPLC method. (C) 2003 Elsevier Ltd. All rights reserved.