火焰原子吸收光谱法测定汽油中锰含量

随着环保要求的提高,汽油添加剂有严格要求,其中锰剂是绝对禁止作为辛烷值改进剂加入到汽油中。汽油出厂要求采用SH/T 0711汽油中锰含量测定(原子吸收分光光度法),且锰控制在0.000 2 g/L以内。原子吸收光谱法因其灵敏度高、检出限低、分析速度快等优点被石油化工行业。采用火焰原子吸收仪测定汽油中的锰含量,并进行加标回收实验,验证方法的准确性。

Determination of Mn in Gasoline by Flame Atomic Absorption Spectrometry

Because demand of environmental protection is increasingly stringent, Mn additive is banned from adding into gaoline.The content of Mn in gasoline must be less than 0.0 002 g/L. The flame atomic absorption spectrometry is widely used in petroleum-chemical industry because of the high sensitivity and low detection limit. In this paper, the content of Mn in gasoline was determined by the flame atomic absorption spectrometry, and experiment of adding standard recovery was carried out to prove the accuracy of the flame atomic absorption spectrometry.