控制永城矿区高氟地下水的地球化学因素——永城矿区高氟污染地下水成因探讨之二

Geochemistry factors of controlling high fluorine content of groundwater in Yongcheng mine area

该区浅层地下水主要受控于包气带的物理化学性质 ,淋溶、解吸 /吸附作用是控制地下水中氟迁移的主要作用 .经过漫长地质年代的溶滤作用是控制深层地下水中氟含量的主要地球化学作用 .氟从固相转入液相、由吸附态转到解吸态 ,其过程和含量受温度、pH值和水化学组分的影响 ,且F- 与 (Na++K+) /Ca2 +比值呈正相关关系 .

Shallow groundwater is controlled by physical chemistry action in aeration zone.Eluviation and desorption/adsorption are major actions to control fluorine move.Lixiviation is chief geochemistry action to control fluorine content undergo very long geological age.Fluorine from solid state to liquid state and from absorbed state to analytic state,the course and content have been affected by temperature,pH value and hydrochemical composition.And the contrast ratio value of the fluorine and Na ++K +/Ca 2+ present the direct proportion.