Abstract
In order to study the pollution status of traditional Chinese medicine and soil heavy metal elements in Longxi, Gansu province, the content and pollution status of heavy metal elements in traditional Chinese medicine and its planting soil were evaluated by the method of field investigation and indoor analysis. The results showed that the total amount of Cd, Pb, Cu, Zn and Cr exceeded the soil background value in varying degrees, and the over standard rates were 100%, 100%, 100%, 67% and 33% respectively. The enrichment capacity of Codonopsis pilosula was Cr > Zn > Cd > Cu > Pb, Astragalus membranaceus was Zn > Cd > Cu > Pb > Cr, Scutellaria baicalensis was Zn > Cd > Pb > Cu > Cr. Health risk assessment shows that traditional Chinese medicine in the study area will not cause obvious harm to resident health.
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