摘要
提出用火焰发射光谱法测定添加剂和润滑油中钡含量的新方法。选用对测定无影响的硝酸做介质，考察了２３种金属离子的干扰情况，并提出了消除干扰的方法。火焰发射光谱法测定钡的灵敏度比原子吸收光谱法提高了３６倍，检测限为０．８３μｇ·ｍｌ￣（－１），用普通的空气－乙炔火焰亦可对样品进行准确测定。
A new method for determining barium content in additives and Iubricating oils withflame emission spectroscopic method is proposed in this paper. The interference conditionsof twenty three kinds of melallic ions are inspected and the method to eliminate interferenceis suggested ; nitric acid which has no effect on the determination is selected as the medium.The sensitivity of the flame ernission spectroscopic method is thirty six times higher thanthat of atomic absorption spectrometry,the detection Iimit being 0.83μg·ml￣(-1).And even acommon air-acetylene flame can be used to perform sample determination accurately.
出处
《石油化工》
EI
CAS
CSCD
北大核心
1994年第7期468-471,共4页
Petrochemical Technology
关键词
助剂
润滑油
添加剂
钡
测定
flame emission spectrograph,additive, lubricating oil,barium
