表面活性剂增敏分光光度法测定微量锡研究  

Determination of Trace Tin by Spectrophotometry Enhanced with Surfactant Micellar

作　　者：冯刚[1] 柏苗[2] 朱霞石[2] 

机构地区：[1]江苏省扬州商务高等职业学校,江苏省扬州市225002 [2]扬州大学化学化工学院,江苏省扬州市225002

出　　处：《光谱实验室》2007年第6期1059-1062,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：建立了表面活性剂增敏分光光度法测定水样中微量锡的新方法。锡与二甲酚橙形成络合物,在pH9.5时吸光度A最大,加入聚乙二醇辛基苯基醚(TritonX-100)胶束后,络合物的稳定性好,灵敏度大大增加。实验条件下显色络合物的最大吸收峰位于431nm处,线性范围为Sn2.0—20.0μg/mL,回收率为98.9%—104.2%。此方法选择性好、灵敏度高、操作简单,用于分析水样中的微量锡,结果令人满意。Trace amounts of tin was determined by spectrophotometry in surfactant triton X-100 micelles.The tin and the xylenol orange form a complex compound at pH9.5 with maximum absorption at 431nm.The absorption is enhanced and stabilized with triton X-100 micelles.Under the experimental condition,the biggest absorption peak of the colored complex compound is located at 431nm,and the linear scope of tin is in the range of 2.0—20.0μg/mL,the recovery is 98.9%—104.2%.The method is selective,sensitive and simple,and was used for the determination of trace tin in the water sample with satisfactory results.

关 键 词：锡 聚乙二醇辛基苯基醚胶束 二甲酚橙 分光光度法 

分 类 号：O657.32[理学—分析化学]