摘要
水文地质背景丰、沛、铜冲积平原皆为硅酸盐岩堆积。主要含氟矿物为黑、白云母,其次为磷灰石。矿物分解到云母阶段,除含氟云母中释放 F^-作用仍在进行外,其它含氟矿物分解。
The authors carry out two tests of the leach and desorption of earth pillar to sim- ulate the courses of the seepage and the recharge of atmospheric water to groundwater in na- ture on the basis of research on environmental and hydrogeological conditions of high fluo- rine groundwater in Fengxian,Peixian and Tongshan counties.The results indicate that the fluorine content is closely related to the fluorophile elements such as calcium,magnesium. sodium ions in soil and water,that high fluorine groundwater is mainly controlled by the conditions of recharge,runoff and discharge.The fluorine ion migrates in the region of groundwater runoff and concentrates in the region of groundwater discharge.Consequently, the change of content of fluorophile elements in aquifer depend on tbe change of dynamic and hydrogeological conditions of groundwater.It is also a major reason for the formation of high fluorine groundwater,because the fluorine ion is dissolved by the river water or atmo- spheric water and carried to the aquifer.The fluorine ion is inversely related to sodium ion when the content of calcium and magnesium ions is contant in the water.
出处
《江苏地质》
1992年第1期35-38,共4页
Jiangsu Geology
