Open AccessStatus and risk evaluation of heavy metals in soil and traditional Chinese medicine in Longxi, Gansu Province, China
Author(s) -
Hong Wen,
Hexiong Wang,
Longmiao Yuan,
Yu Jiang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/601/1/012008
Subject(s) - heavy metals , cadmium , environmental chemistry , traditional medicine , pollution , toxicology , chemistry , medicine , metallurgy , materials science , biology , ecology
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.