高碘酸钾氧化硫堇催化光度法测定痕量锰  

Catalytic Spectrophotometric Determination of Trace Manganess Base on Oxidation of Thionine by Potassium Periodate

作　　者：王一凡[1] 李春云[1] 

机构地区：[1]中南大学湘雅医学院,湖南长沙410078

出　　处：《精细化工中间体》2001年第5期44-46,共3页Fine Chemical Intermediates

摘　　要：研究了在醋酸盐缓冲介质中 ,痕量锰催化高碘酸钾氧化硫堇的褪色反应 ,建立了一种高选择性测定痕量锰的新方法。方法的线性范围为 0 0 179～ 0 .10 71mg/L ,检出限为2 .85× 10 - 6g/L。用于直接测定茶叶样品中的痕量锰 。A new catalytic spectrophotometric method for determing trace amounts of Mn in tea has been developed. The method has high selectivity. The method is based on the catalytic effect of manganess on oxidation of thionine by potassium periodate in acetate buffer medium. The linear range for the determination of manganess is 0.0179～0.1071mg/L and the detection limit is 2.85×10 -6 g/L. The method has been used to determine trace manganess in tea samples with satisfactory results.

关 键 词：催化光度法 锰 硫堇 茶叶 碘酸钾 氧化 植物监测 

分 类 号：X835[环境科学与工程—环境工程]