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Tracking cadmium pollution from source to receptor: A health-risk focused transfer continuum approach

文献类型： 外文期刊

作者： Yang, Shiyan 1 ; Yang, Dong 1 ; Taylor, David 3 ; He, Mingjiang 4 ; Liu, Xingmei 1 ; Xu, Jianming 1 ;

作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China

2.Shanghai Acad Agr Sci, Ecoenvironm Protect Inst, Shanghai 201403, Peoples R China

3.Natl Univ Singapore, Dept Geog, Singapore 117650, Singapore

4.Sichuan Acad Agr Sci, Inst Agr Resources & Environm, Chengdu 610066, Peoples R China

5.866 Yuhangtang Rd, Hangzhou 310058, Peoples R China

关键词： Cadmium pollution; Source emission; Transfer process; Urinary cadmium level; Health risk assessment

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 867 卷

页码：

收录情况： SCI

摘要： Cadmium (Cd) exposure poses a substantial risk to human health. Despite this, the multi-stage process through which Cd is released to the environment before being taken up and impacting human receptors has rarely been investigated. Here we utilized an integrated model involving Cd emissions, atmospheric transport, deposition, uptake by rice, recep-tor ingestion and metabolic processing in quantifying the critical emission sources and human health risks of Cd. At-mospheric Cd emissions in the study area in southeastern China were estimated at 147 kg (2016), with >53 % of emissions from non-ferrous metals (NFM) smelting activities. Atmospheric Cd depositions caused elevated Cd content in soil and rice, accounting for 3-79 % and 50-85 % of, respectively, soil and rice Cd. Cumulative frequency analysis showed that an estimated 1.3 % of predicted urine Cd through the consumption of Cd-contaminated rice and exceeded existing safety standards (1 mu g g-1), thus highlighting the risks posed to health from high levels of Cd pollution. Ap-plying stricter industrial emission standards to the NFM sector in particular and effective soil management practices could substantially reduce exposure to Cd pollution. The results contribute to understanding of the Cd transfer process and draw attention to the relative health benefits of interventions aimed at mitigating Cd levels and exposure risks at different stages along the Cd transfer continuum from source to receptor.

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