生态与农村环境学报2025，Vol.41Issue(11)：1412-1420,9.DOI:10.19741/j.issn.1673-4831.2025.0654
数据驱动的全球土壤砷人体可给性分布特征及影响因素
Data-driven Insights into the Global Distribution and Determinants of Soil Arsenic Bioaccessibility
摘要
Abstract
The bioaccessibility of arsenic(As)in soils is governed by soil physiochemical properties,contamination sources,and testing parameters.In this study,As bioaccessibility was evaluated in 1 457 soil samples collected world-wide.The bioaccessible fractions of As ranged from 0.05％to 89.0％in the gastric phase and from 0.15％to 83.2％in the intestinal phase.The mean gastric-phase As bioaccessibility decreased in the order of:industrial(31.3％)＞urban(24.3％)＞agricultural(23.5％)＞mining/smelting(19.9％)＞tailings(13.8％),whereas in the intestinal-phase values followed the order of:industrial(24.6％)＞agricultural(22.7％)＞mining/smelting(18.5％)＞tailings(10.5％)＞urban(10.1％).Bioaccessible As concentrations were significantly and positively correlated with total As and organic matter contents(P＜0.001),but significantly and negatively correlated with Fe,Mn,and Al contents(P＜0.001).Among the methodological parameters,pH and gastric pepsin concentration exerted significant effects on As bioaccessibility,while ex-traction duration had a negligible influence.The 95th percentile As bioaccessibility values-56.9％,59.3％,69.7％,30.2％,and 65.4％for soils derived from tailings,mining/smelting,industrial,urban,and agricultural sources,respec-tively are recommended as reference values for refined human health risk assessment.关键词
土壤来源/砷人体可给性/分布特征/影响因素Key words
soil source/arsenic bioaccessibility/distribution characteristic/influencing factors分类
资源环境引用本文复制引用
张浩楠,李兰竹,钟茂生,夏天翔,王世杰..数据驱动的全球土壤砷人体可给性分布特征及影响因素[J].生态与农村环境学报,2025,41(11):1412-1420,9.基金项目
国家重点研发计划项目(2023YFC3708704,2018YFC1801004) （2023YFC3708704,2018YFC1801004）
