阻抑动力学分光光度法测定微量硒  

Determination of Trace Selenium by Inhibitory Kinetic Spectrophotormetry

作　　者：柴红梅[1] 

机构地区：[1]延安大学化学与化工学院陕西省化学反应工程重点实验室,陕西省延安市716000

出　　处：《光谱实验室》2012年第1期310-313,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：陕西省教育厅专项科研计划项目(09JK814)

摘　　要：基于在pH 6.09的B-R缓冲溶液中,Se(Ⅳ)对H_2O_2氧化甲基紫的褪色反应具有阻抑作用,建立了阻抑动力学分光光度法测定微量Se(Ⅳ)的新方法。方法的线性范围为:0.020—0.080μg/mL,检出限为1.44×10^(-3)μg/mL,用于环境水样中微量Se(Ⅳ)的测定,结果满意。A new method for the determination of trace selenium（Ⅳ） was established by inhibitory kinetic spectrophotometry basing on selenium（Ⅳ） had the inhibitor effect on the oxyen reaction of methyl violet by hydrogen peroxide in B-R buffer solution with pH value of 6.09.The linear relationship was in the range of 0.020—0.080μg/mL with detection limit of 1.44×10^（-3）μg/ mL.The method was applied to determining the trace selenium（Ⅳ） in the environmental water samples with satisfactory results.

关 键 词：阻抑动力学分光光度法 甲基紫 硒(Ⅳ) 

分 类 号：O657.32[理学—分析化学]