摘要
在pH值9.8的Clark-Lubs缓冲溶液中,Mn(Ⅱ)能催化过氧化氢氧化钙红(CR)而褪色,本文进一步考查了该法的测定条件,并详尽地研究了干扰离子的分离条件,在此基础上。用该法测定了使用前、后润滑油中的痕量锰。该法的表现摩尔吸收系数为12×10~7L·mol^(-1)·cm^(-1),最低检测限为2.6ng/25mL。
In the Clark-Lubs buffer solution of pH 9.8, manganese(Ⅱ) can catalyze the decoloring reaction resulting from oxidation of CR by hydrogen peroxide. In this paper, the meassuring conditions of the method and the abstracting conditions of seperation from inference ions are studied. The method has been used to determine trace manganese in lube oil. The apparent molar absorptivity is 1.2×10~7L. mol^(-1), cm. The detection limit is 2.6 ng/25mL.
出处
《辽宁石油化工大学学报》
CAS
1992年第3期26-31,共6页
Journal of Liaoning Petrochemical University
关键词
催化分光光度法
痕量锰
润滑油
Derivate spectrophotometry Trace manganese Lube oil
