The relative exclusion of zinc and iron from rice grain in relation to rice grain cadmium as compared to soybean: Implications for human health

摘要

During 2000–2002, diagnostic rice and soybean plant samples and concurrent soil samples were collected from cultivated fields within a geo-physically unique Zn/Cd co-contaminated location in Thailand. For the fields sampled, aqua regia-digested Zn and Cd concentrations ranged from 2.91–284 and 254–8036 mg kg−1, respectively. In comparison, rice and soybean Cd concentrations ranged from 0.02–5.00 and 1.08–1.71 mg kg−1, respectively. Further, the results indicate that grain Cd, Zn and Fe concentrations are in the order riceGr=soybeanGr, soybeanGr