氢化物原子荧光法与石墨炉原子吸收法测定微量铅

Determination of minute quantity lead generation by AFS and GFAS

目的：在铅的测定方面比较不同仪器的性能。方法：氢化物原子荧光法和石墨炉原子吸收法。结果：氢化物原子荧光法和石墨炉原子吸收法的检出限为0.042μg/L和2.52μg/L,相对标准偏差为3.13%和1.30%,回收率为98.0%-105.0%和95.2%-104.0%。结论：在微量铅的测定方面,氢化物原子荧光法是一种比较好的方法。

Objective：To compare the capability of different devices in determination of minute quantity lead. Methods：Hydride generation AFS and GFAS were used. Results： The detection limit of hydride generation AFS and GFAS was 0. 042 μg/L and 2. 52 μg/L, the relative standard deviation （RSD） 3. 13% and 1.30% , recoveries of standard addition were in the range of 98. 0% - 105.0% and 95.2% - 104.0%. Conlusion：The AFS is a better method in determination of minute quantity lead.