研究了卟啉与铅、镉的反应及其相应配合物的电子吸收光谱。并结合巯基棉富集分离方法 ,将该具有特定光学性质的分析体系成功地应用于中药中痕量铅、镉的测定 .方法简便 ,测定体系抗干扰的效果好 ,灵敏度高 .对Pb(Ⅱ )、Cd(Ⅱ )的摩尔吸光系数分别为 2 .5× 10 5L·mol- 1·cm- 1和 5 .1× 10 5L·mol- 1·cm- 1.实际样品测定的RSD在 3.3%~ 13.0 %之间 .样品加标回收率在 85 %~ 110 ...
李方, 侯旭, 张新申
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