Distribution of Pb and Cd in Soil and Rice Systems of Se-Rich Area of Hainan Island

Abstract:

Clarifying the distribution of cadmium (Cd) and lead (Pb) in the soil of Hainan's Se-rich areas will not only provide a basis for the healthy and sustainable development of Hainan's Se-rich industry, but also provide ideas for Hainan's agricultural and food safety research. Using a method that combines field investigation and indoor analysis, with the help of geostatistics and spatial analysis technology, the concentration of Pb and Cd in the soil and rice in the area were studied. The Cd in the cultivated soil layer of the arableland in the area is lower than the first-level standard of our country's soil environmental quality standards, and the soil Pb content is slightly higher than the first-level standard. The overall ecological risk is low. Pb and Cd in polished rice are 0.14 and 0.11 mg/kg respectively. The concentrations distribution of lead and cadmium in rice is: straw > polished rice. Heavy metals are more likely to accumulate in non-edible parts such as straw.

• Periodical: Advances in Science and Technology (Volume 166)
• Pages: 9-13
• DOI: https://doi.org/10.4028/p-CxP1qN
• Online since: June 2025
• Authors: Xiu Hua Wang, Hua Wang, Cui Cui He, Huan De Feng, Ting Zhong Wang*
• Keywords: Cadmium, Contamination, Hainan, Lead, Se-Rich Area

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