沧州地区氟元素在不同介质中的分布

以沧州地区的地下水、土壤和小麦中的氟元素为研究对象,探讨氟元素在地下水、土壤和小麦等不同介质中的含量、空间分布与来源成因。通过绘制各介质中氟元素分布图,获得氟元素在各介质中不同深度的含量及水平空间上的分布特征。结果显示,当地深层地下水氟含量平均为2.25 mg/L,高于浅层地下水的平均值0.80 mg/L;深层和浅层土壤氟含量接近,平均值分别为557.18、569.20 mg/kg;小麦中的氟含量最高值为0.96 mg/kg,当地小麦氟含量均低于国家标准限值(1.0 mg/kg)。根据氟元素的分布特点分析,当地深层地下水与土壤的氟元素来源一致,而不同于浅层地下水中的氟;小麦的氟元素分布受浅层土壤氟影响较大。

Distribution of Fluorine in Multiple Environmental Media in Cangzhou, China

Cangzhou is one of the most serious fluorosis areas in China. Chose groundwater, soil, wheat of Cangzhou as research objects, by the map of fluorine in multiple environmental media, the article discussed the content, distribution and material sources of fluorine in different depth and horizontal space. The result showed that the average fluorine content of local deep groundwater was 2.25 mg/L, which was higher than that of shallow groundwater (0.80 mg/L); fluorine content in deep soil and topsoil were similar, the average content in deep soil was 557.18 mg/kg and that in topsoil was 569.20 mg/kg; the highest fluorine content in wheat was 0.96 mg/kg, which means that fluorine contents in all wheat did not exceed the limits of national standard(1.0 mg/kg). According to the distribution of fluorine, the fluorine source of deep groundwater was as same as that of soil, different from that of shallow groundwater, and fluorine in wheat was influenced significantly by topsoil.