摘要
以河北邢台山前平原浅层高氟地下水为例，根据氟的化学热力学分析，确定了控制浅层地下水中氟迁移和富集的固相沉淀物，以及不同化学类型的浅层地下水中含氟固相沉淀物的溶解／沉淀条件；利用浅层地下水化学平衡反应模型和ＰＨＲＥＥＱＥ软件，确定了氟化的稳定区域，计算了氟化钙的饱和指数．研究结果表明，在浅层高氟地下水的整个形成过程中，都表现为氟由固相转入水相的趋势。
On the basis of the analysis of chemical thermodynamics of fluoride , the solid phases controlling fluotide migration and accumulation in shallow groundwaters are determined, and the condition of fluoride dissolution and precipitation in shallow groundwater of various chemical types in Xingtai piedmont plain is analysed in the paper. Using chemical equilibrium reaction model of shallow groundwater and PHREEQE prgram, the stability field of CaF 2 is defined and saturation indices of CaF 2 and other solid phases are calculated. The study results indicate that fluorine always tends to enter aqueous phase from solid phase in the formation of the shollow high fluoride groundwater.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1996年第3期337-340,共4页
Earth Science-Journal of China University of Geosciences
基金
地矿部环境地质开放实验室项目
关键词
氟
沉淀作用
溶解作用
定量研究
shallow groundwater, fluorine, dissolution and precipitation.
