Accumulation Characteristics and Health Risk Assessment of Heavy metals in Corn Kernel in Du'an Yao Autonomous County
Earlier studies have found serious heavy metal pollution in soils collected from Du' an Yao Autonomous County in Guangxi Zhuang Autonomous Region,which has resulted in heavy metal contamination of rice in this area.However,heavy metal contamination in another main crop corn was not documented yet.Here we collected corn and soil samples from 64 planting zones distributed in 19 towns in the County to investigate concentrations of heavy metals including cadmium(Cd),arsenic(As),nickel(Ni),zinc(Zn),chromium(Cr),copper (Cu) and lead (Pb).The potential health risk for local residents was assessed.Lead and Zn content in 7.81％ and 4.69％ of corn samples was higher than the limits of the National Food Health Standard,respectively,with total 10.9％ of corn samples exceeding the standards.According to the Hazard Index (HI),the health risks of corn consumption to people in Du'an County was still at low level,implying that corn could be planted in Du'an County because of its low accumulating ability for heavy metals.However,the potential risk of lead pollution in Gaoling,Disu,and Dongmiao towns should be controlled.
cornheavy metalaccumulation characteristicshealth riskDu'an Yao Autonomous County
国家科技期刊平台
NSTL
万方数据
维普
