痕量铅的液膜分离富集与火焰原子吸收光谱法的测定

Liquid membrane separation and enrichment of trace lead and its determination by flame atomic absorption spectrometry

建立了一种新型分离富集水溶液中痕量铅 的方法———准液膜法 ,用P2 0 4迁移Pb2 + 离子 ,用H2 SO4解吸Pb2 + 离子 ,迁移与解吸同步进行 ,在最佳液膜体系及操作条件下 ,铅的回收率可达 90 %以上 ,利用此方法可降低火焰原子吸收光谱法的下限。

In this paper,a new method of quasi liguid membrane separating and enriching Pb? was established. Using P 204 to migrate Pb? and H 2SO 4 to desorb Pb? simultaneously,the recovery of Pb? was more than 90% and the detection limit of Pb? by FAAS can be decreased.