摘要
介绍了一种用氢化物发生原子荧光法测定水中砷和汞的方法.此法是在盐酸介质中,以硼氢化钾为还原剂,将被测元素转化为挥发性氢化物,以高纯氩气为载气将挥发性氢化物从母液中分离,并导入原子荧光光度计进行检测.采用AFS-830a型原子荧光光度计同时测定瓯江流域水中砷、汞的含量.该方法的最低检出限:砷为0.0814 μg·L-1,汞为0.0235 μg·L-1;RSD(n=8)As 1.7%~4.9%,Hg 2.4%~6.8%.
The hydride-generation-atomic fluorescence spectrometry is employed to determine arsenic and mercury in water.With hydrochloric acid as medium and KBH4 as reducing agent,the target element is transferred into hydride.With highly pure argon gas as carrier,this hydride is separated from the mother liquid and led into atomic fluorescence spectrometry for detection.This paper employs AFS-830aatomic fluorescence spectrometry to synchronously measure the content of arsenic and mercury in water of Oujiang River.The minimum detection limits of this method are as follows:As 0.0814μg·L-1,Hg0.0235μg·L-1.RSD(n=8):As1.7%-4.9%,Hg2.4%-6.8%.
出处
《浙江树人大学学报（自然科学版）》
2006年第3期34-35,40,共3页
Journal of Zhejiang Shuren University(Acta Scientiarum Naturalium)
关键词
氢化物发生原子荧光法
砷
汞
水样
hydride-generation-atomic fluorescence spectrometry
As
Hg
water
