基于电化学方法测定饮用水源水中的痕量铜离子

doi:10.13208/j.electrochem.180418

电化学（中英文） ›› 2019, Vol. 25 ›› Issue (6): 699-707. doi: 10.13208/j.electrochem.180418

基于电化学方法测定饮用水源水中的痕量铜离子

彭劲骥^1a，郑红^1a，邹义松²，刘国坤^1*，袁东星^1*

1. 近海海洋环境科学国家重点实验室, 厦门大学环境与生态学院，福建厦门 361102；2. 固体表面物理化学国家重点实验室, 厦门大学化学化工学院，福建厦门 361005

收稿日期:2018-04-18 修回日期:2018-05-02 出版日期:2019-12-28 发布日期:2019-12-28
通讯作者: 刘国坤，袁东星 E-mail:guokunliu@xmu.edu.cn, yuandx@xmu.edu.cn
基金资助:
国家自然科学基金项目（No. 21473140）、福建省产学研合作项目（No. 2016Y4012）和中央高校基本科研业务费专项资金（No. 20720160113）资助

Electrochemical Determination of Trace Copper ions in Drinking Water Source

PENG Jing-ji^1a, ZHENG Hong^1a, ZOU Yi-song², LIU Guo-kun^1*, YUAN Dong-xing^1*

1. State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology,Xiamen University, Xiamen 361102, Fujian, China; 2. State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China

Received:2018-04-18 Revised:2018-05-02 Published:2019-12-28 Online:2019-12-28
Contact: LIU Guo-kun, YUAN Dong-xing E-mail:guokunliu@xmu.edu.cn, yuandx@xmu.edu.cn
Supported by:
This work was financially supported by the Natural Science Foundation of China (No. 21473140), the Collaboration Project between Industry and University in Fujian Province (No. 2016Y4012), and the Fundamental Research Funds for the Central Universities (No. 2072016011).

摘要/Abstract

摘要： 本文建立了一种饮用水源水中痕量溶解态铜离子（Cu²⁺）的定性和定量电化学检测方法. 该方法首先通过电化学循环伏安法于玻碳电极表面制备粒径约为70 nm的金纳米粒子（Au NPs），然后采用方波阳极溶出伏安法进行待测水样中Cu²⁺的定性定量分析. 研究结果表明，对于标准溶液，方法的检出限为1.3 μg·L^-1，线性范围在2 ~ 50 μg·L^-1之间，常见重金属离子对其定性定量分析几无影响. 在此基础上，将该方法应用于福建省重要的饮用水源水——闽江中游水样中Cu²⁺的含量分析，所得测试结果与国家标准方法（石墨炉原子吸收光谱法）无显著性差异，标准偏差在20%以内. 本方法具有电极制备简单、测定成本低以及分析快速等优点，进一步优化电极制备方法以提高方法的重现性和定量准确度，将可望用于现场测定各种饮用水源水中的痕量溶解态Cu²⁺.

关键词: 电化学检测, 方波阳极溶出伏安法, 金纳米粒子, 痕量铜离子, 饮用水

Abstract: Aiming at the on-site and quick safety evaluation of the dissolved trace copper ions (Cu²⁺) in drinking water source, an electrochemical detection platform was developed on the basis of the square wave anodic stripping voltammetry using the gold nanoparticles (Au NPs) modified glassy carbon electrode, where Au NPs were deposited via electrochemical cyclic voltammetry. The proposed method displayed the limit of detection as low as 1.3 μg·L^-1 in the linear range of 2 ~ 50 μg·L^-1. The proposed method was applied to the determination of Cu²⁺ in the midstream of Minjiang River, one of the most important drinking water sources in Fujian province, China. The results were nearly identical to that obtained by the standard method quantitatively with a deviation less than 20%. Furthermore, the proposed electrochemical method is simple, economical and fast, and has the potential for the field determination of trace dissolved Cu²⁺ in various drinking water sources facilitated with the portable potentiostat.

Key words: electrochemical determination, square wave anodic stripping voltammetry, gold nanoparticles, trace copper, drinking water

中图分类号:

O646

彭劲骥, 郑红, 邹义松, 刘国坤, 袁东星. 基于电化学方法测定饮用水源水中的痕量铜离子[J]. 电化学（中英文）, 2019, 25(6): 699-707.

PENG Jing-ji, ZHENG Hong, ZOU Yi-song, LIU Guo-kun, YUAN Dong-xing. Electrochemical Determination of Trace Copper ions in Drinking Water Source[J]. Journal of Electrochemistry, 2019, 25(6): 699-707.

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基于电化学方法测定饮用水源水中的痕量铜离子

Electrochemical Determination of Trace Copper ions in Drinking Water Source

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