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。本文进一步考察了该法的测定条件,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。该法的表观摩尔吸收系数为6.6×10~6升/(mol·cm),检测限为2.6ng/25ml。
In a Clark-Lubs buffer solution of pH 9.8, manganese (Ⅱ) can catalyze the decoloring reactiou resulting from oxidation of CR by hydrogen eroxide. In this paper, the measurement conditions of the method and the conditions for the separation of intefering ions are studied. The method has been used to determine trace manganese in lube oil. The apparent molar absorptivity is 6×10~6 l/mol·cm, and the detection limit for Mn(Ⅱ) is 2.6 ng/25 ml.
出处
《石油化工》
CAS
CSCD
北大核心
1993年第9期617-620,589,共5页
Petrochemical Technology
关键词
催化
分光光度法
锰
润滑油
catalytic spectrophotometry,trace manganese,lube oil
