【摘要】 基于铬对某些氧化还原反应的催化作用 ,可用催化动力学光度法测定痕量铬 ,灵敏度一般在 1 0 - 8g mL～ 1 0 - 1 0g mL之间 ,用于环境水样、粮食、合金等样品中铬的测定 ,取得了满意结果。本文就催化动力学光度法测定痕量铬 (Ⅵ )和铬 (Ⅲ ) ,按不同催化体系 ,从反应条件、灵敏度、测定范围和应用等方面加以归纳和讨论更多还原

【Abstract】 Trace chromium can be determined by the catalytic kinetic method basing on the catalytic effect of chromium on the redox reactions.The sensitivity is about (10 -8 ～10 -10 )g/mL and these methods had been applied to the determination of trace chromium in samples of water,foodstuff,alloy and et al.with satisfactory results.This paper summarizes the research of determination of trace chromium by catalytic kinetic photometric method from different catalytic reaction system and its condition, sensitivity,range and application.更多还原