循环伏安法测定氯化铵镀镉溶液中镉离子浓度
Determination of cadmium ion in ammonium chloride cadmium plating solution by cyclic voltammetry method
严鹏飞 1罗迎禧 2刘春秘 1宋体杰 1王珏 1赵政鑫 1毕四富 2刘海萍2
作者信息
- 1. 沈阳飞机工业(集团)有限公司,辽宁 沈阳 110850
- 2. 哈尔滨工业大学(威海)海洋科学与技术学院,山东 威海 264209
- 折叠
摘要
以玻碳电极作为工作电极,采用三电极体系建立了循环伏安法测定氯化铵镀镉溶液中Cd2+浓度的电化学分析方法.系统分析了电位扫描范围、测定体系pH和扫描速率对于氯化铵镀镉液中Cd2+浓度测试的影响,并予以优化.在优化后的测试条件下建立Cd2+浓度与氧化峰电流之间的关系曲线为Ip=0.164x-2.238(R2=0.995).结果表明,循环伏安方法的相对标准偏差RSD小于1%,加标回收率在98%～110%之间,对共存组分的干扰研究表明,Fe3+、Co2+和Cu2+对于Cd2+测试结果的影响较小.
Abstract
An electrochemical analytical method was developed for the rapid detection of Cd2+concen-tration in ammonium chloride-based cadmium plating solutions.A glassy carbon electrode was used as the working electrode within a three-electrode system,and the measurement was carried out by cyclic voltammetry.The impact of key experimental parameters,such as scanning potential range,pH and scan rate,on the measurement was investigated to optimize the procedure.Under optimal conditions,a linear relationship between the oxidation peak current(Ip)and CdCl2 concentration was established,with a standard curve equation of Ip=0.164x-2.238(R2=0.995).The results showed that the method demonstrated high precision with relative standard deviations(RSDs)below 1%and good accuracy with recoveries ranging from 98%to 110%as assessed by the standard addition method.Interference studies revealed that common coexisting ions such as Fe3+,Co2+and Cu2+had minimal effects on the determination of Cd2+.
关键词
循环伏安法/镀镉/镉离子浓度/电化学分析Key words
cyclic voltammetry/cadmium plating/cadmium ion concentration/electrochemical analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据