2004•Journal of Southwest UniversityRequires access
Determination of zinc,cadmium,cobalt and nickel in Chinese traditional medicines containing cinnabar by TLCS
Mao Xue-hu
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Abstract
This paper proposes a new method based on TLCS of metal chelates for the determination
of zinc, cadmium, cobalt and nickel in Chinese traditional medicines, which has the advantages of
simple operation and high sensitivity. The method is applied to the determination of total contents,
dissoluble fraction, organic state fraction and inorganic state fraction of zinc, cadmium, cobalt and
nickel in Tianwang Buxin pills and Niuhuang Qingxin pills. The results are consistent with those by
AAS. The average recovery of zinc, cadmium, cobalt and nickel by the proposed method was 98.43%,
103.5%, 104.5% and 98.65%, respectively.