海南热带海洋学院学报2025，Vol.32Issue(5)：40-48,9.DOI:10.13307/j.issn.2096-3122.2025.05.05
三亚市表层土壤元素的化学特征及其重金属风险评估
Chemical Characteristics of Surface Soil Elements and Risk Assessment of Heavy Metals in Sanya City
摘要
Abstract
To evaluate the chemical characteristics of elements and the extent of heavy metal risk in the surface soils of Sanya City,36 samples from 18 types of surface soils were collected and analyzed for the chemical characteris-tics and heavy metal pollution risks of 9 major elements and 9 trace elements.By employing geostatistical methods,the Chemical Index of Alteration(ICA),Migration Coefficient(Δ)and Geoaccumulation Index(Igeo),the distribution patterns and weathering characteristics of soil elements were revealed.The results indicated that the content of all ele-ments was below the background levels,with high levels of Si and Al,severe loss of K,Ca,and Mg,and weather-ing products dominated by kaolinite,showing a trend of aluminum enrichment.The migration capacity of major and trace elements,in descending order,was SiO₂,P₂O₅,MnO,Al₂O₃,TiO₂,K₂O,MgO,CaO,Fe₂O₃ and Cu,Y,Zn,Ni,Cr,Rb,Sr,Zr,V,respectively.The geoaccumulation index of heavy metals indicated low pollution levels.How-ever,Cr poses a high carcinogenic risk to children,V represents a potential health risk to children,and Mn poses a high health risk to adult males.This study provides a scientific basis for soil environmental management and the pre-vention and control of health risk in Sanya City.关键词
三亚表层土壤/化学蚀变指数/迁移系数/地累积指数/健康风险Key words
Sanya surface soil/chemical index of alteration(ICA)/migration coefficient(Δ)/geoaccumulation in-dex(Igeo)/health risk分类
地质学引用本文复制引用
孙金成,王平,丁文慈,赵由之,邓美玲..三亚市表层土壤元素的化学特征及其重金属风险评估[J].海南热带海洋学院学报,2025,32(5):40-48,9.基金项目
国家自然科学基金项目(42267015,42376234) （42267015,42376234）
海南热带海洋学院崖州湾创新研究院重大科技计划项目(2022CXYZD002) （2022CXYZD002）
