摘要
在吐温 8 0、正丁醇、汽油和水的微乳液体系中 ,以 1 (2 吡啶偶氮 ) 2 萘酚 (PAN)为显色剂 ,用流动注射分光光度法直接测定汽油中的微量铁。体系的测量波长为 760nm ,测定铁的线性范围为 0～ 7μg/mL ,检出限为 0 10μg/mL,进样频率达 180样 /h ,RSD <4 0 %。本方法避免了油样预处理的繁琐步骤 ,加快了测定速度 ,应用于实际样品测定结果令人满意。
A photometric method for the determination of iron in gasoline with PAN by flow injection analysis in the presence of microemulsion has been studied The linear range is 0-7μg/mL at 760nm The detection limit is 0 10μg/mL,RSD<4 0% and the sampling frequency is 180times/h The proposed method does not need pretreatments such as preliminary ashing or extraction etc It is very rapid,simple and convenient for the determination of iron in gasoline
出处
《冶金分析》
CAS
CSCD
北大核心
2003年第6期43-44,共2页
Metallurgical Analysis
关键词
汽油
铁
测定
微乳液
增溶
流动注射分析法
flow injection spectrophotometry
microemulsion
iron
gasoline
