岩矿测试2025，Vol.44Issue(1)：127-139,13.DOI:10.15898/j.ykcs.202404210093
土壤中典型矿物对锑的吸附-沉积行为研究
Adsorption-Deposition Behavior of Typical Minerals on Antimony in Soil
摘要
Abstract
Human activities such as mineral mining and coal combustion cause a large amount of antimony to enter into environmental soil.Exploring the adsorption deposition behavior of antimony on typical soil minerals is important for predicting the environmental fate of antimony and preventing its pollution.Thus,six kinds of commonly found metal hydroxides and clay minerals in soil(namely hematite,goethite,ferrihydrite,aluminum oxide,ramsdellite,and kaolinite)were selected to investigate the adsorption thermodynamic and kinetic behavior of Sb(Ⅲ)and Sb(Ⅴ)on their surfaces,and speculate the adsorption mechanism.The order of adsorption capacities(mg/g)of six soil minerals for Sb(Ⅲ)/Sb(Ⅴ)were as follows:ferrihydrite(101.4,55.9)＞ramsdellite(16.52,7.58)＞goethite(13.30,5.67)＞hematite(5.13,3.70)＞aluminum oxide(1.66,1.69)＞kaolinite(0.27,0.51).Affected by the speciation of antimony and the surface potential of minerals,acidic conditions were favorable for the adsorption of Sb(Ⅴ),while the adsorption of Sb(Ⅲ)was less affected by pH.The Sb2O3 formed after deposition was characterizedin situ by Raman spectroscopy.Sb(Ⅴ)adsorbed on the mineral by adsorption at different concentrations,while Sb(Ⅲ)deposits on the mineral surface at higher concentrations.The BRIEF REPORT is available for this paper athttp://www.ykcs.ac.cn/en/article/doi/10.15898/j.ykcs.202404210093.关键词
锑/水铁矿/斜方锰矿/氧化铝/吸附/沉积/拉曼光谱Key words
antimony/ferrihydrite/ramsdellite/aluminum oxide/adsorption/sedimentation/Raman spectroscopy分类
环境科学引用本文复制引用
郭贵宾,袁晓雅,黄理金,帅琴,胡圣虹,欧阳磊..土壤中典型矿物对锑的吸附-沉积行为研究[J].岩矿测试,2025,44(1):127-139,13.基金项目
国家自然科学基金项目(22106147) （22106147）
湖北省自然科学基金项目(2024AFD399) （2024AFD399）
