Status of paddy soil Cd pollution and probabilistic health risk via agricultural contact in China
CUI Xiang-fen1, ZHANG Qin1, WANG Jin-kun1, TIAN Sen-lin2, HUANG Jian-hong1
1. Faculty of Environment Science and Engineering of Kunming University of Science and Technology, Kunming 650500, China; 2. Yunnan Provincial Center for Disease Control and Prevention, Kunming 650034, China
Abstract:Based on 205 published articles, a national-scale assessment of cadmium (Cd) contamination in paddy soil across China mainland was conducted. The Cd concentrations, spatiotemporal variations, and probabilistic health risk resulted from Cd exposure via agricultural contact were analysed. On national average, Cd concentration (0.54±1.38)mg/kg was much higher than the background value (0.097mg/kg) of Cd element in topsoil. Although no significant temporal variation(β=-0.002, 95% confidence interval[CI]:-0.025~0.022), Cd concentrations varied considerably among the different regions (South China[(0.88±1.59)mg/kg] >Southwest[(0.46±0.85)mg/kg] > East China[(0.44±1.45)mg/kg] > North China[(0.36±1.05)mg/kg] > Northwest[(0.35±0.83) mg/kg] > Northwest[(0.01±0.05)mg/kg]), as well as among areas affected by different anthropogenic activities (Mining & smelting[(1.77±2.18)mg/kg] > other industrial activities[(0.64±1.22)mg/kg] > E-waste recycling[(0.59±0.87)mg/kg] > Sewage irrigation[(0.57±1.26)mg/kg] > traffic transport[(0.56±0.86)mg/kg] > Normal fields[(0.25±0.34)mg/kg]). Except the Northwest China, partial Cd concentrations surpassed the risk screening value for Cd contamination of paddy soil, especially 34% of Cd concentration records of the south China exceeded the corresponding risk intervention value (1.5mg/kg). The non-carcinogenic risk was acceptable (HQ<<1) and dermal contact contributed more than oral ingestion. The female was more likely to be affected by Cd exposure through agricultural contact and regions including the south and southwest China were determined as the priority risk control areas.
崔祥芬, 张琴, 田森林, 王晋昆, 黄建洪. 中国稻田土壤镉污染及务农性暴露概率风险[J]. 中国环境科学, 2021, 41(8): 3878-3886.
CUI Xiang-fen, ZHANG Qin, WANG Jin-kun, TIAN Sen-lin, HUANG Jian-hong. Status of paddy soil Cd pollution and probabilistic health risk via agricultural contact in China. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(8): 3878-3886.
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