汞环境地球化学特征

本文讨论了汞在土壤、水、大气、生物环境中的含量、形态、迁移、富集、污染等环境地球化学特征,探讨了汞对人体健康的重大影响。汞在环境中的循环途径是非常复杂的,各种形态的汞由一种转化为另一种,而毒性最大的是甲基汞(CH3Hg+)。更为严重的是,汞可富集于土壤、沉积物、鱼类和其他各种野生动物,或通过挥发作用进入大气圈。

Characteristics of Mercury Environmental Geochemical

This paper discusses the values, chemical species, migrations, accumulations, contaminations etc. Characteristics of Mercury regional environmental geochemical in the soils environmental and water environment and atmospheric environment and Bioenvironmental which affect one's health.Mercury cycling pathways in aquatic environments are very complex. The various forms of mercury can be converted from one to the next; most important is the conversion to methylmercury (CH_3Hg~+), the most toxic form. Ultimately, mercury ends up in the soils, sediments, fish and wildlife, or evades back to the atmosphere by volatilization. the ultimate source of mercury to most aquatic ecosystems is deposition from the atmosphere, primarily associated with rainfall.