分析化学中液膜富集方法的研究——痕量锰的液膜分离富集与火焰原子吸收光谱法测定

LIQUID MEMBRANE SEPARATION AND ENRICHMENT OF TRACE MANGANESE AND ITS DETERMINATION BY FLAME ATOMIC ABSORPTION SPECTROMETRY

本文以N_(205)-P_(507)-煤油-液体石蜡-HCl液膜体系分离富集了痕量Mn^(2+),五次提取分离,富集倍数可达87倍,回收率近于98％。与火焰原子吸收光谱法结合,可富集测定ppb级的Mn^(2+)。

The liquid mombranc system N_(205)-P_(507)-kerosene-liquid paraffin-HCl was studied.Several disturbing materials can be masked easily with NaF. Mn^(2+) at ppb level can be enriched selectively and determined by FAAS. Rccovery of 98％ and enrichment of 87-fold are obtained.