双道原子荧光法测定涉水塑料管材浸泡液中的砷和锑  

Simultaneous Determination of Arsenic and Antimony in Soaked Liquid of Plastic Pipes for Water Supply by Fluorophotometry

作　　者：刘丽菁[1] 邱文倩[1] 吕华东[1] 

机构地区：[1]福建省疾病预防控制中心,福建福州350001

出　　处：《中国卫生工程学》2006年第4期226-228,共3页Chinese Journal of Public Health Engineering

摘　　要：目的探讨同时测定涉水塑料管材浸泡液中砷、锑的方法，以提高工作效率。方法采用氢化物发生-原子荧光法进行测定。砷、锑灯电流均为60mA，负高压280V，介质酸度8％，硼氢化钾浓度1．0％。结果砷在0～80μg/L范围内线性良好，相关系数0．9995，检出限0．074μg/L，相对标准偏差1．43％～3．14％，回收率94．7％～100．5％；锑在0～40μg/L范围内线性良好，相关系数0．9996，检出限0．17μg/L，相对标准偏差1．34％～2．75％，回收率91．3％-107．0％。结论此法适用于涉水塑料管材中砷和锑的同时测定。Objective To establish a method to simultaneously determine arsenic and antimony existed in soaked liquid of plastic pipes in order to improve work efficiency. Methods A quantitative method of hydride generation - atomic fluorescence spectrometry was carried out. The electric currents of arsenic and antimony lamps were both 60 mA. PMT was 280 V, the acidity was8%, 1.0% KBH4 was used. Results The linear range of the arsenic was 0 - 80 ug/L with correlation coefficient of 0 . 9995 , the detection limit of this method was 0. 074 ug/L, the relative standard deviation and recovery rate of arsenic were 1.43% - 3.14% and 94.7- 100.5% respectively. The antimony had a good linear result in the range of 0-40 ug/L , and the correlation coefficient was 0.999 6, the detection limit was 0.17 ug/L, relative standard deviation and recovery rate of antimony were 1.34% - 2.75 % and 91.3 % - 107.0% respectively. Conclusion This method is available to simultaneously determine arsenic and antimony in soaked liquid of plastic water pipe.

关 键 词：原子荧光法 涉水产品卫生 塑料管材 砷 锑 

分 类 号：O657.31[理学—分析化学] R123[理学—化学]