硬聚氯乙烯(UPVC)饮水管材和管件中痕量锡的GFAAS测定研究  

Determination of Trace Sn in Unplastized Polyvinyl Chloride Pipes for Drinking Water Supply by GFAAS

作　　者：鲁丹[1] 宋国良[1] 卓岳明[2] 

机构地区：[1]浙江省疾病预防控制中心,杭州310009 [2]乐清市疾病预防控制中心

出　　处：《中国公共卫生》2002年第11期1379-1380,共2页Chinese Journal of Public Health

基　　金：浙江省分析测试基金项目 (编号 0 0 0 1 )

摘　　要：目的　建立测定硬聚氯乙烯 (UPVC)饮水管材和管件中痕量锡的新方法。方法　应用抗坏血酸作基体改进剂 ,横向塞曼石墨炉原子吸收光谱法直接测定浸泡液中痕量锡。结果　选定了最佳测量条件 ,提高了方法的灵敏度、精密度。本法的最低检出量为 9 3pg ,回收率在 94 0 %～ 10 1 0 %之间。对锡含量为 6 0 μg/L的浸泡液连续测定 11次的相对标准偏差为 4 6 %。结论　本法简便、快速、准确 ,灵敏度和精密度高。适用于硬聚氯乙烯 (UPVC)Objective To find new methods to detect Sn in unplastized polyvinyl chloride pipes for drinking water supply.Methods L-Ascorbic acid is used as matrix modifier in the direct Zeeman GFAAS to determine trace Sn.Results The method detection limit is 9.3pg. The recovery is 94.0%-101.0%. The RSD obtained from the data of 11 determinations at the concentration level of 6.0μg /L is 4.6%.Conclusion This method is simple, quick, accurate and sensitive.It is a very good methods for measuring Sn in unplastized polyvinyl chloride pipes for drinking water supply.

关 键 词：横向塞曼 GFAAS 硬聚氯乙烯 UPVC 饮水管材 痕量锡 给水卫生 

分 类 号：R123.5[医药卫生—环境卫生学]