Safety Limit Test of Heavy Metals and Pesticide Residues in the Zhuang Ethnic Medcine Herba Polygoni

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[Objectives]This study was conducted to determine the contents of such five heavy metals as lead(Pb),cadmium(Cd),arsenic(As),mercury(Hg)and copper(Cu)and the contents of nine kinds of organochlorine pesticide residues including total BHC(α-BHC,β-BHC,γ-BHC
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