文献类型：期刊文献

英文题名：Valency distributions and geochemical fractions of arsenic and antimony in non-ferrous smelting soils with varying particle sizes

作者：Zhao, Jianfeng[1];Luo, Qishi[2];Ding, Lei[1];Fu, Ruifeng[3];Zhang, Feng[4];Cui, Changzheng[1,5]

机构：[1]East China Univ Sci & Technol, Sch Resource & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Shanghai Shenglong Environm Co Ltd, Shanghai 200235, Peoples R China;[3]Analyt Applicat Ctr Shimadzu China Co LTD, Shanghai 200233, Peoples R China;[4]Shanghai Greenment Environm Technol Co Ltd, Shanghai 200001, Peoples R China;[5]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2022

卷号：233

外文期刊名：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000779428900002)】；

基金：Acknowledgments This work was supported by the National Key R&D Program of China (2018YFC1802700) .

语种：英文

外文关键词：Arsenic and antimony; Mine and smelter soil; Soil particle size; Valency distribution; Geochemical fractions

摘要：Arsenic and antimony are common toxic metalloids found in associated minerals. These metalloids generally cause high-concentration pollution in non-ferrous metal smelting soils; however, few studies have investigated the pollution characteristics of these two metalloids at non-ferrous smelting sites using varying soil particle sizes. In this study, the valency distributions and geochemical fractions were investigated with varying soil particle sizes (< 0.05, 0.05-0.25, 0.25-1, and 1-2 mm). Soils were mainly concentrated in < 0.05 and 0.05-0.25 mm with mass percentages of 32.97% and 29.02%, respectively. The highest total As and Sb concentrations in < 0.05 mm were found to be 20,350 and 3655 mg/kg, respectively. In addition, As(III), As(V), Sb(III), and Sb(V) concentrations in this soil particle size were found to be 224, 19,813, 1036, and 24 mg/kg, respectively. The geochemical fractions of As and Sb in varying soil particle sizes were mainly residual, accounting for 50% and 90% in the < 0.05 mm. Soil may bind < 0.25 mm due to the disparity found in the geochemical compositions and valency distributions of arsenic and antimony. X-ray diffraction and scanning electron microscopy/energy dispersive system analysis confirmed that arsenolite accumulated in particle sizes of < 0.05 and 0.05-0.25 mm. The results of this study may provide a scientific reference for risk assessment and restoration strategies for nonferrous metal smelting soils.