摘要
采用氢化物发生原子荧光光谱法测定水中痕量锑。用盐酸和5%硫脲+5%抗坏血酸混合溶液处理样品,并以1.0%硼氢化钾和0.5%氢氧化钾为还原剂,在5%的盐酸介质中测定锑,锑的检出限(DL)为:0.028 μ g/L,相对标准偏差RSD (n=15)为3.1%,水样的加标回收率在94.3%～103.6%之间。本方法具有操作简便、快速、基体干扰少、灵敏度高和重现性好等优点,可用于水样中锑的测定。
HG-AFS was applied to the determination of trace amounts of antimony in water.The water sample was treated by HCL and 5% Thiourea (H_2NSCNH_2)～5% Ascorbic acid (C_6H_8O_6).The method is based on the re- action of antimony (Sb) with KBH_4 to form the hydride gas in medium of 5% HCl.The detection limits(DL) are 0.028μg/L.and it is RSD(n=15)found was3.1%,the recoveries of Sb obtained by standard addition method are in the ranges of 94.8%～102.3%.The method is simple,rapid,less matrix interference and high sensitivity and repro- ducible.It can be applied to determination of Sb in water.
出处
《现代仪器》
2009年第6期76-77,78,共3页
Modern Instruments
