焦作地区地下水高氟区土壤中的氟

Edaphic fluorine in high section of groundwater of Jiaozuo area

焦作地区存在着较大范围的地下水高氟区.为了探明高氟区的成因,对高氟区土壤中的氟进行了测定.结果表明:0～30cm耕层土壤中总氟的质量浓度为(330±33)mg/kg,水溶性氟为(12.4±2.65)mg/kg,易溶性氟为(16.2±3.25)mg/kg,可给态输出能力为4.48%.除了土壤总氟的质量浓度在正常值范围之内外,水溶性氟、水溶性氟与总氟的比值、土壤可给态输出能力均偏高.土壤水溶性氟偏高是引起地下水高氟的主要原因.

There is a large range of high section of groundwater in Jiaozuo area. In order to make out the reason why there is high section. The results which were measured the edaphit fluorine of the high section indicated that the mass concentration of total fluorine is （330 ± 33） mg per kg; water-solubihty fluorine is （12.4 ± 2.65） mg per kg ; amiable-solubility fluorine is （16.2 ± 3.25） mg per kg and given-form fluorine is 4.48 percent . Other value is on the high side except that the mass concentration of total fluorine is in normal water-solubility on the high side is the vital reason that causes the high section of ground water.