氟在环境中分布广泛，是电负性最强的卤族元素，易与金属形成可溶性离子键化合物，亦可以共价键形成络阴离子。土壤中的氟最初来自成土母质母岩，不同成土母质形成的土壤，其含氟量有较大差异。岩石风化，特别是在潮湿气候条件下，常使氟转入土壤。工业污染如萤石矿、磷矿的开? Fluorine is widely distributed in the environment and is the most electronegative halogen element. It is easy to form soluble ion-bonding compounds with metals and covalently forms complex anions. Fluorine in the soil initially comes from the mother-of-the-earth parent rock, and the contents of fluorine in the soil from different parent materials are quite different. Rock weathering, especially in humid climates, often turns fluorine into the soil. Industrial pollution such as fluorite ore, phosphate rock open?