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对云南热海和瑞滇地区地热流体的地球化学特征进行了分析和探讨,并据此评估了地热流体对环境的影响。结果显示,研究区的碱性热泉中K、Na、F、Cl、SiO2的含量高,而只存在于热海地区的酸性热泉中SO42-、Mn、Fe的含量高。热泉中As、Sb的含量范围分别在43.6～687μg/L和0.38～23.8μg/L之间。热泉中以As(Ш)为主,占了总砷的91%。地热流体中的As、Sb—部分被固定在泉华中,而另一部分则释放到了环境中,从而进入地下水和下游的田地中,对当地居民的健康造成威胁。
The geochemical characteristics of geothermal fluids in the Athai and Ruidian areas of Yunnan are analyzed and discussed, and the effects of geothermal fluids on the environment are evaluated. The results show that K, Na, F, Cl, SiO2 contents are high in the alkaline hot springs in the study area, while SO42-, Mn and Fe are only found in hot acidic springs in the Atami region. The contents of As and Sb in hot springs range from 43.6 to 687 μg / L and from 0.38 to 23.8 μg / L, respectively. Hot springs to As (Ш) based, accounting for 91% of total arsenic. The As and Sb-fractions of the geothermal fluid are trapped in Quanhua while the other is released into the environment, entering the groundwater and downstream fields, threatening the health of local residents.