吸附溶出伏安法测定水中镍和钴的条件优化  

Condition optimization of nickel and cobalt determinationin water by adsorptive stripping voltammetry

作　　者：王晴萱 WANG Qing-xuan(Central Analysis Unit,Dalian Ecological and Environmental Monitoring Center of Liaoning Province,Dalian Liaoning 116023)

机构地区：[1]辽宁省大连生态环境监测中心中心分析室,辽宁大连116023

出　　处：《辽宁师专学报（自然科学版）》2020年第4期105-108,共4页Journal of Liaoning Normal College(Natural Science Edition)

基　　金：2018年第一批辽宁省地方标准制修订项目(2018265)。

摘　　要：通过实验研究吸附溶出伏安法测定水中镍和钴的影响因素,得出最佳实验条件为预电解电位-0.6 V,预电解富集时间120 s,扫描电位在-0.8^-1.3 V之间,扫描速率26.4 mV/s.在此条件下,利用该方法监测水中痕量镍和钴无需繁复的前处理,操作便捷,测定效果好,成本低.By means of the experimental study on the influence factors of the determination of nickel and cobalt in water by adsorptive stripping voltammetry,the paper obtained best experimental condition as followed:pre-electrolysis potential was -0.6 V,pre-electrolysis enrichment time was 120 s,the scanning potential ranged from -0.8 to -1.3 V,the scanning rate was 26.4 mV/s.Under this condition,the method can be used to detect the trace nickel and cobalt in water without complicated pre-treatment,and it is easy to operate and has good determination effect and low cost.

关 键 词：预电解电位 富集时间 扫描电位 扫描速率 

分 类 号：X832[环境科学与工程—环境工程]