Theresults of researches on the nine types of soils, indicated that F content of the natural soil including brown loam and fragmental soil was much higher.

• 对九个土壤类型土壤全氟及水浸氟含量的研究表明：棕壤、粗骨士自然土壤的全氟含量较高，但可给态氟的输出能力较弱。