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Status evaluation of edaphic fluorine in high section of groundwater in southwest of Shandong Province, China

机译：山东省西南地下水中地下水中偕氟氟的现状评价

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A study was carried out to determine fluoride concentration in groundwater and analyze the correlation with the local surface soils of Caoxian situated in southwestern Shandong Province of China. Fluoride concentrations were determined in 96 groundwater samples collected from wells and 34 soil samples collected from farmlands using a fluoride electrode and an ion selective meter. The results showed that fluoride concentrations varied from 0.15 to 4.32 mg/L with 35.41% of the shallow wells above the World Health Organisation (WHO) maximum permissible limit of 1.5 mg/L. The concentration of F in most parts of shallow aquifer were greater than 1.00 mg/L, locally greater than 4.0 mg/L with mean value of 1.26 mg/L. The distribution of high F groundwater was porphyritic distribution or banded distribution. And the total fluoride in surface soils varied from 325.75 to 574.25 mg/kg with a mean value of 459.39 mg/kg, while soil water-soluble fluorine varied from 4.44 to 19.50 mg/kg with a mean value of 9.91 mg/kg. Soil water-soluble fluorine was a higher level than normal value, the ratio of soil water-soluble fluoride and total fluoride was also significantly higher than national average. High soil water-soluble fluoride was the major reason for high fluoride groundwater.
机译：进行了研究以确定地下水中的氟化物浓度，并与山东省西南部曹雄岛局部土壤的相关性。在使用氟化物电极和离子选择仪中从农田收集的孔和34种土壤样品收集的96个地下水样品中测定氟化物浓度。结果表明，氟化物浓度从0.15〜4.32毫克/升变化，占世界卫生组织（世卫组织）最大允许极限为1.5毫克/升的35.41％。浅层含水层大多数部分的F浓度大于1.00mg / L，局部大于4.0mg / L，平均值为1.26mg / L.高压地下水的分布是卟啉分布或带状分布。表面土壤中的总氟化物在325.75至574.25mg / kg中变化，平均值为459.39mg / kg，而土壤水溶性氟可从4.44〜19.50 mg / kg变化，平均值为9.91mg / kg。土壤水溶性氟比正常值更高，土壤水溶性氟化物和总氟化物的比例也明显高于全国平均水平。高土壤水溶性氟化物是高氟化物地下水的主要原因。

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