The Heavy Metal Content Monitoring and Dietary Risk Assessment of Commercial Rice in Beijing
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
A total of 537 rice grain samples commercially available in the market of Beijing were collected to monitor the content of heavy metals such as Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sr and Zn, providing data support and reference for food safety and health risk assessment in Beijing. The heavy metal pollution evaluation and health risk assessment were conducted using Nemerow comprehensive pollution index and health risk assessment model, respectively. The results were as follows: the average content of Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sr and Zn were 0.02, 0.03, 2.27, 2.63, 9.10, 0.15, 0.07, 0.17 and 14.27 mg/kg, respectively. The pollution grades of heavy metal pollution in rice were as follows: Pb > Zn > Ni > Cu > Cd > Cr and the risk grades were as follows: Cu > Zn > Cd > Pb > Cr > Ni. The results showed that the Nemerow pollution index of heavy metals in the rice was low, which indicated that the overall health status of rice in Beijing was at a safe level. The contribution of rice heavy metals to children's THQ was higher than that of adults. Therefore, we suggest that the relevant department should improve the supervision on harmful heavy metals and offer better dietary guidance.
