停流流动注射分析同时测定碘离子和亚硝酸根的研究  

Simultaneous Determination of Iodide and Nitrite by Stopped Flow Injection Analysis

作　　者：柳仁民[1] 刘桂华[1] 刘道杰[1] 孙爱玲[1] 

机构地区：[1]聊城师范学院化学系,聊城252059

出　　处：《分析化学》1995年第4期407-409,共3页Chinese Journal of Analytical Chemistry

摘　　要：基于铁(Ⅲ)-硫氰酸根络合物褪色动力学反应,利用流动注射分析停流技术,建立了流动注射动力学分析法同时测定碘离子和亚硝酸根离子的新方法.方法对碘离子的线性范围为2×10^(-5)～1.6×10^(-4)mol/L.对亚硝酸根的线性范围为4×10^(-7)～1×10^(-5)mol/L.应用于合成混合液中碘离子和亚硝酸根的测定,结果满意.A stopped flow injection analysis for the simultaneous determination of iodide and nitrite is developed based on their kinetic effect on the colour fading of iron(Ⅲ)-thiocyanate complex in nitric acid solution. The linear range for iodide is 2×10-5 -1. 6 × 10-4 mol/L, and that for nitrite is 4-10-7-1-10-5 mol/L.

关 键 词：流动流射分析 碘离子 亚硝酸根 

分 类 号：O613.44[理学—无机化学] O613.61[理学—化学]