摘要
文章首先总结了砷在地表水、地下水、土壤、沉积物、岩石、大气中的含量和分布;归纳了砷的地球化学循环过程;分析了砷在水和土壤/沉积物固相中的形态;并重点阐述了砷在土壤和沉积物中的迁移转化机理。砷通常与Fe、Al、Mn的氧化物和氢氧化物、粘土矿物、硫化物、磷酸盐和碳酸盐矿物结合,砷的生物可用性和迁移性与其在土壤和沉积物中的形态有密切关系。文章最后定量阐述了砷的污染源,包括金属开采与冶炼,化学燃料的燃烧和含砷化学品使用。
Based on comprehensive review of related literature,content and distribution of As in the surface water,groundwater,soil,sediments,lithosphere and atmosphere were summarized,geochemical cycle of As in the earth surface layer was reviewed,species and transform of As in water and soil/sediment solid phases were discussed.As in soil and sediments usually associates with iron,aluminum and manganese(hydro) oxides,clays and mineral oxyanions such as sulfates,phosphates and carbonates,which play an important role ...
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第7期90-97,共8页
Environmental Science & Technology
基金
"十一五"国家科技支撑计划重大项目课题(2006BAJ05A08)
国家自然科学基金项目(40671002)
关键词
砷
含量
形态
来源
地球化学循环
arsenic
content
speciation
anthropogenic source
geochemical cycle
