【摘要】 采用高分子聚合物固相萃取(SPE)柱,结合KI-MIBK萃取体系,对高Ca、Mg、Fe的水样及中草药等复杂基质样品中的Cd(Ⅱ),Pb(Ⅱ)进行同时富集实验并用火焰原子吸收光谱法(FAAS)分析。其与液-液萃取(LLE)相比,该法不仅提高了FAAS的灵敏度,其回收率、精密度,以及校准曲线的线性均有较大改善,且此法操作方便易行。更多还原

【Abstract】 Base on the polystyrene divinylbenzene column with the KI-MIBK of extraction system,Pb(Ⅱ),Cd(Ⅱ)have been preconcentrated and determined by FASS at the same time in complex water and herbs,which include high quality of calcium,magnesium and iron.Compared with LLE method,the sensitivity of FAAS is increased and the recoveries,accuracy and linear correlation of this method are better and this method is convenient and simple.更多还原