期刊论文

中文

分析科学学报

1006-6144

2016

32

3

385-388

10.13526/j.issn.1006-6144.2016.03.019

湖南省科技计划（No.2012GK3070） 湖南省科技计划重点项目（No.2010SK2004） 湖南省自然科学基金（No.11JJ5022） 湖南省高校科技创新团队支持计划（No.2014）207号） 湖南省教育厅高校科研项目（15C0244） 益阳市指导性科技计划（2014JZ26）

本校为第一机构

以石墨粉、Se粉和石蜡为原料制备了掺杂Se粉的碳糊电极(SeCPE)。以SeCPE为工作电极,通过差分脉冲伏安法(DPV)对溶液中Sb~(3+)进行测定。优化条件如下:硒粉比例20%、HCl浓度0.36 mol/L、沉积时间60s、沉积电位-0.45V。结果表明,Sb~(3+)的浓度在1.0×10~(-7)~1.0×10~(-5) mol/L范围内与峰电流呈线性,线性相关系数R=0.9980,计算得检出限为0.3×10~(-7) mol/L。该电极具有良好的重现性、再生性和较高灵敏度。

Carbon paste electrode doped with selenium powder(SeCPE)was fabricated by doping graphite powder,selenium powder and paraffin with a certain proportion.The SeCPE sensor was used to determine Sb~(3+)by differential pulse stripping voltammetry(DPV).A maximum peak current efficiency of Sb~(3+) was obtained with the SeCPE sensor which was doped with 20%Se powder and immersed in 0.36 mol/L hydrochloric acid solution following a 60 sdeposition time at-0.45V.The linear relationship between the peak current and antimony concentration was found in the r...