高氟湖库底泥中氟的存在形态分析——以洋沙泡水库为例

论述了底泥中氟的存在形态及其浸提方法。通过洋沙泡水库底泥氟各种形态的分析实验，发现底泥氟形态的含量分布为残余态水溶态>有机态>铁锰结合态>可交换态；底泥各形态氟含量呈对数分布；水溶性氟质量分数为26.77~112.39 mg/kg，占总氟的2.699%~19.114%。底泥全氟含量、氟的来源、气候因素的影响、区域理化环境以及湖泊曾数度干涸是造成水溶性氟含量高的主要原因。

Analysis on the Existing Forms of Fluorine in the Bottom Mud of High Fluorine Lakes and Reservoirs-A Case Study of Yangshapao Reservior

The existing state and extracting method of fluorine in bottom mud are discussed. Based on the experimental analysis of different fluoride forms in the bottom mud of Yangshapao reservoir, the distribution of various fluoride forms in the bottom mud is clear. The content of residual state fluorine is much more than that of water soluble fluorine, more than that of the organic-bound state fluorine, more than that of iron and manganese bound state fluorine, and more than that of exchangeable state fluorine. The fluorine content of different forms in the bottom mud is in logarithmic distribution character. The content of water soluble fluorine is 26.77-112.39 mg/kg，which accounts 2.699%-19.114% of the total fluorine content. The content of the total fluorine in the bottom mud, source of fluorine, the climate factor, the regional physical and chemical environment, and several time dry-out of the lake are considered to be the main factors of the high content of water soluble fluorine depositing into the bottom mud.