在非离子表面活性剂存在下流动注射催化光度法测定硒(Ⅳ)  

Flow-injection Catalytic Spectrophotometric Determination of Selenium(Ⅳ) in the Presence of Non-ionic Surfactant

作　　者：樊静[1] 叶存玲[1] 冯素玲[1] 张一敏 郝大情 田国均 

机构地区：[1]河南师范大学化学系河南省高等学校环境科学与工程重点学科开放实验室,新乡453002 [2]河南省新乡市职业病防治研究所,新乡453003

出　　处：《分析化学》2001年第9期1062-1064,共3页Chinese Journal of Analytical Chemistry

摘　　要：利用非离子表面活性剂存在下的胶束催化作用，硒(Ⅳ)对Na2S还原培花青(GC)有强催化作用，建立了流动注射催化光度法测定硒(Ⅳ)的新方法。本方法的测定范围为0.05～1．00mg/L，检测限为0.01 mg/L。11次重复测定的相对标准偏差不大于2.0%。用于硒酵母、猪肾、自来水和金施尔康药片中硒的测定，结果满意。In the presence of non ionic surfactant, Tween-80, a new flow-injection catalytic spectrophotometric method for the determination of se lenium(Ⅳ) based on its catalysis to the reduction of gallocyanine (GC) by Na2S was established. The linear range and detection limit are 0.05-1.00mg/L and 0.01 mg/L, respectively. The relative standard deviation of eleven replicat e measurements is less than 2.0%. This method has been successfully used to dete rmine selenium in saccharomy selenic, kidney of pig, tap water and Jinshierkang tablet.

关 键 词：胶束催化作用 硒(Ⅳ) 培花青 流动注射分析法 测定 非离子表面活性剂 

分 类 号：O657.3[理学—分析化学]