催化光度法测定痕量锰(Ⅱ)的研究——过氧化氢-铬黑T体系  

CATALYTIC SPECTROPHOTOMETRY DETERMINATION OF TRAC MANGANESE(Ⅱ) USING MANGANESE(Ⅱ) ERIOCHROME BLACK T HYDROGEN PEROXIDE

作　　者：文剑辉[1] 洪朝辉[1] 姚佩君 

机构地区：[1]广东韩山师范学院化生系,潮州521041

出　　处：《化学研究与应用》1999年第6期660-662,共3页Chemical Research and Application

摘　　要：On the basis of that the catalytic decomposition of the title reagent with manganese in sodium tetraborate sodium carborate anhydrous buffer solution,and hydrogen peroxide can accelerate the reaction,a new catalytic spectrophotometry determination is described.The effect of various experimental factors was studied and the optimal conditions for the determination of Mn(Ⅱ) were found.A better linear relation ship was obtained over the range of 0-0.25 and 0.3-2.0μg/25ml, and the detection limit for Mn(Ⅱ) is 1ng/ml. The method has been used to determine trace Mn(Ⅱ) in waste water,hair and tea satisfactorily.The mechanism of reaction has been studied kinetically.On the basis of that the catalytic decomposition of the title reagent with manganese in sodium tetraborate sodium carborate anhydrous buffer solution,and hydrogen peroxide can accelerate the reaction,a new catalytic spectrophotometry determination is described.The effect of various experimental factors was studied and the optimal conditions for the determination of Mn(Ⅱ) were found.A better linear relation ship was obtained over the range of 0-0.25 and 0.3-2.0μg/25ml, and the detection limit for Mn(Ⅱ) is 1ng/ml. The method has been used to determine trace Mn(Ⅱ) in waste water,hair and tea satisfactorily.The mechanism of reaction has been studied kinetically.

关 键 词：铬黑T 痕量 锰离子 催化光度法 测定 

分 类 号：O614.711[理学—无机化学]