Health risk assessment of trace metal(loid)s in agricultural soil using an integrated model combining soil-related and plants-accumulation exposures: A case study on Hainan Island, South China
文献类型： 外文期刊
作者： Lin, Bi-gui 1 ; Pan, Pan 1 ; Wei, Chao-xian 1 ; Chen, Xi-chao 3 ; Zhang, Zong-yao 3 ; Fan, Qing-fang 1 ; Liu, Fang 1 ; Liu, Bei-bei 1 ; Wu, Lin 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Haikou 571101, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Low carbon Green Agr Trop Reg China, Hainan Danzhou Trop Agroecosystem Natl Observat &, Danzhou 571737, Peoples R China
3.Minist Ecol & Environm, South China Inst Environm Sci, Guangzhou 510655, Peoples R China
4.Guizhou Univ, Key Lab Green Pesticide, Agr Engn Minist Educ, Guiyang 550025, Guizhou, Peoples R China
5.Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China
6.4 Xueyuan Rd, Haikou 571101, Hainan, Peoples R China
关键词： Agriculture soils; Trace metal(loid)s; Health risk assessment; Probabilistic risk analysis; Bioaccumulation
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2023 年 896 卷
页码：
收录情况： SCI
摘要： Traditional health risk assessment of trace metal(loid)s (TMs) in agricultural soil exclusively considers direct soil-related exposure and may underestimate the health risks they pose. In this study, the health risks of TMs were evalu-ated using an integrated model that combined soil-related and plant-accumulating exposures. A detailed investigation of common TMs (Cr, Pb, Cd, As, and Hg) coupled with probability risk analysis based on a Monte Carlo simulation was conducted on Hainan Island. Our results showed that, except for As, the non-carcinogenic risk (HI) and carcinogenic risk (CR) of the TMs were all within the acceptable ranges (HI < 1.0, and CR < 1E-06) for direct soil-related exposure to bio-accessible fractions and indirect exposure via plant accumulation (CR substantially lower than the warning threshold 1E-04). We identified crop food ingestion as the essential pathway for TM exposure and As as the critical toxic element in terms of risk control. Moreover, we determined that RfDo and SFo are the most suitable parameters for assessing As health risk severity. Our study demonstrated that the proposed integrated model combining soil-related and plant-accumulating exposures can avoid major health risk assessment deviations. The results obtained and the in-tegrated model proposed in this study can facilitate future multi-pathway exposure research and could be the basis for determining agricultural soil quality criteria in tropical areas.
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