云南红河州大屯镇工业老区地下水低砷含量成因探析

Analyses on Formation Cause of Low Arsenic Content of Old Industrial Base Areas Groundwater at Honghe Datun Town In Yunnan

充分利用大屯海工业老区的历史污染变迁特征,通过对区域内地表水、地下水及红壤砷含量的定量测定,结合区域土壤的理化特征,分析总结区域内砷在地表水、土壤介质及地下水介质中的时间、空间分布特征及砷的迁移规律,结果表明,区域内地下水砷含量较低,红壤的固砷效果显著,红壤对水中的砷具有良好的吸附作用。

Including the physicochemical characteristics and the quantification determination of arsenic in ground surface water, underground water and red soil, the historical characteristics change of the pollution in Datunhai old industry area was fully utilized to analyze the time and space distribution characteristics of arsenic in ground surface water, underground water and red soil as well as its transmission law. As shown from the results, the content of arsenic in underground water was very low which demonstrate that the fixation of arsenic in red soil is very obvious as red soil shows a good adsorption capacity on arsenic.