Highly Sensitive Simultaneous Stripping Voltametric Detection of Zn2+, Cd2+ and Hg2+ by Bismuth Codeposition Procedure with Graphdiyne-Modified Electrode

被引：7

作者：

Ai, Yijing ^{[1
]}

Wang, Lisi ^{[1
]}

Fu, Wanting ^{[1
]}

Ye, Xiang ^{[1
]}

Zhou, Juan ^{[1
]}

Zhang, Xiaoping ^{[1
]}

He, Shuhai ^{[2
]}

Sun, Wei ^{[1
]}

机构：

[1] Hainan Normal Univ, Coll Chem & Chem Engn, Key Lab Laser Technol & Optoelect Funct Mat Hainan, Key Lab Funct Mat & Photoelectrochemistry Haikou, Haikou 571158, Peoples R China

[2] Hainan Ecol Environm Monitoring Ctr, 98 Baiju Ave, Haikou 571126, Peoples R China

来源：

CHEMOSENSORS | 2023年 / 11卷 / 02期

基金：

中国国家自然科学基金;

关键词：

graphdiyne; bismuth; heavy metal ions; electrochemistry; differential pulse anodic stripping voltammetry; CARBON-PASTE ELECTRODE; VOLTAMMETRIC DETERMINATION; FILM ELECTRODES; CADMIUM; LEAD; PB(II); CD(II); MERCURY; ZINC; THALLIUM;

D O I：

10.3390/chemosensors11020075

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, graphdiyne (GDY)-modified glassy carbon electrode was prepared and further used for the sensitive and simultaneous detection of three target heavy metal ions of Zn2+, Cd2+ and Hg2+ by codeposition with Bi3+ in the mixture solution. GDY-modified electrodes exhibit a larger electrode area and abundant active sites, which is favorable for absorbing more metal ions. Bismuth has low toxicity and can form alloys with zinc, cadmium and mercury. Therefore, three kinds of heavy metal ions can be pre-concentrated with bismuth on the GDY-modified electrode surface, and the following stripping analysis results in high sensitivity and selectivity. By using differential pulse anodic stripping voltammetry, the detection ranges of Zn2+, Cd2+ and Hg2+ were from 2.0 to 100.0 mu M with low detection limits of 0.255 mu M, 0.367 mu M and 0.796 mu M, respectively. In addition, the sensor showed excellent repeatability, reproducibility, and stability, which was applied to sensitive analysis of river water samples with satisfactory results.

引用

页数：13

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