微乳液增溶流动注射分析法快速测定汽油中微量铁  

Determination of iron in gasoline by FIA with microemulsion improving solubility

作　　者：余萍[1] 郝清伟[1] 高俊杰[1] 刘雅秋[1] 李静平[1] 

机构地区：[1]沈阳工业学院化工分院,辽宁沈阳110045

出　　处：《冶金分析》2003年第6期43-44,共2页Metallurgical Analysis

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

关 键 词：汽油 铁 测定 微乳液 增溶 流动注射分析法 

分 类 号：O657.32[理学—分析化学]