催化动力学光度法测定电镀废水中痕量铬(Ⅵ)  

Catalytic kinetic spectrophotometry for the determination of trace chromium(Ⅵ) in electroplating wastewater

作　　者：罗道成[1] 易平贵[1] 李佳秋[1] 

机构地区：[1]湘潭工学院化工系,湘潭411201

出　　处：《环境污染与防治》2002年第5期318-320,共3页Environmental Pollution & Control

摘　　要：研究在 H2 SO4介质中 ,痕量 Cr( )对催化溴酸钾氧化偶氮胂 的褪色反应及动力学条件 ,建立了测定痕量 Cr( )的新方法。方法的检出限为 6 .4× 10 -1 2 g/L ,Cr( )量在 0～ 4 80μg/L范围内符合比尔定律。用于测定电镀废水中痕量 Cr( ) 。A new catalytic kinetic spectrophotometric determination of trace chromium(Ⅵ) has been investiga\|\{ted\}. This method is based on the Cr(Ⅵ) can catalyze the decoloring oxidation reaction of arsenazo I by KBrO\-3 in the medium of H\-2SO\-4. Beer's law is obeyed over the range of 0~480 μg/L for Cr(Ⅵ) and the detection limit is 6.4×10\+\{-12\} g/L. This method has been applied to the determination of trace Cr(Ⅵ) in electroplating waste water with \{satisfactory\} results.\;

关 键 词：催化动力学光度法 电镀废水 痕量铬 水质分析 水处理 

分 类 号：X832[环境科学与工程—环境工程]