摘要
采用丝网印刷工艺制备碳纳米管/碳复合材料电极,通过双硫腙修饰,用阳极溶出伏安法检测水体中微量镉离子,并对双硫腙用量、支持电解质pH值、富集电位及时间等实验参数进行了优化。Cd^2+的浓度在(1.25~40)μg/L范围内与溶出峰电流呈良好的线性关系(r^2=0.998),检出限0.42μg/L。该法用于实际水样中镉和铅的测定,平均回收率为99.25%。
The carbon nanotube/carbon composite electrode was prepared by screen printing process,modified by dithizone,and anodic stripping voltammetry was used to detect trace cadmium ions in water.The experimental parameters such as time and time were optimized.The concentration of Cd^2+in the range of(1.25~40)μg/L has a good linear relationship with the dissolution peak current(r^2=0.998),the detection limit is 0.42μg/L.This method is used for the determination of cadmium and lead in actual water samples,with an average recovery rate of 99.25%.
作者
张召霖
袁英兰
王云华
郑国侠
Zhang Zhaolin;Yuan Yinglan;Wang Yunhua;Zheng Guoxia(School of Environmental and Chemical Engineering,Dalian University,Environmental Micro Total Analysis Laboratory,Dalian Liaoning 116622,China;Shenyang Academy of Environmental Sciences,Shenyang Liaoning 110016,China)
出处
《环境与发展》
2020年第10期186-188,共3页
Environment & Development
基金
国家自然科学基金项目(41006071,41476085)。
