数字农科院2.0

Novel insight into deriving remediation goals of arsenic contaminated sites with multi-media-equivalent dose and local exposure parameters

文献类型： 外文期刊

作者： Yang, Danhua;Jia, Xiaoyang;Xia, Tianxiang;Zhang, Nan;Su, Shiming;Tao, Zhenghua;Wu, Zhiyuan;Liang, Jing;Zhang, Lina

作者机构：

关键词： Multi-media-equivalent dose;Health risk;Glassworks site;Remediation goal;Local exposure parameters

期刊名称： JOURNAL OF HAZARDOUS MATERIALS

ISSN： 0304-3894

年卷期： 2025 年 482 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The remediation goal (RG) for arsenic (As) calculated by the traditional method is approximately 0.45 mg center dot kg-1, significantly lower than the background values. This poses significant challenges for the management of Ascontaminated sites. The present study focused on a typical glassworks site with an As contamination level of up to 298 mg center dot kg-1, predominantly existing as As (III), with a carcinogenic risk level as high as 8.6 x 10-5. We developed a novel method known as multi-media-equivalent dose (MMED), incorporating local exposure parameters, and investigated the impacts of site-specific bioaccessibility (from 6.9% to 51.5%) on the results. The RG of arsenic calculated via MMED was 34.4 mg center dot kg-1 and 54 mg center dot kg-1 when bioaccessibility was considered. Integrating with five exposure parameters across 31 provinces, the provincial remediation goals (PRGs) ranged from 15.1 to 31.7 mg center dot kg-1. The RG calculated using the new method were more aligned with the practical conditions of managing As-contaminated sites, with potential for broader implementation across various provinces.

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