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中南地区6种土壤8个层次的氟吸附和解吸试验结果表明:供试土壤的氟吸附与Langmuir、Freundilich和Temkin方程均有较好的拟合性;花岗岩发育土壤的氟吸附量明显大于红砂岩和紫红色砂页岩发育的土壤。赤红壤、砖红壤、紫色土和黄棕壤性土吸附的氟可为0.1mol／LKOH完全解吸，而红壤和黄棕壤的氟解吸部分滞后，滞后的原因与14nm过渡性矿物较多有关。上还土壤吸附氟均不能被水完全解吸，解吸率因土壤不同而不同。花岗岩发育土壤的氟解吸率（26.9％～40.0％）比其他母质土壤（4.8％～94.2％）低。供试土壤对氟吸附和解吸的差异与土壤矿物特性，尤其是氧化物数量有关。
The results of fluoride adsorption and desorption experiments on six levels of six soils in Central South China showed that the fluorine adsorption of tested soils had a good fit with the Langmuir, Freundlich and Temkin equations, and the fluorine adsorption of granitic soils was significantly greater than that of red sandstone And purple sandstone shale developed soil. The adsorption of fluorine on red soil, brick red soil, purple soil and yellow brown soil can be completely desorbed by 0.1mol / L KOH, while that of red soil and yellow brown soil lags behind. The reason of lag is more related to 14nm transitional minerals. On the soil also can not be adsorbed fluoride completely desorbed by water, desorption rate varies due to different soil. The fluorine desorption rate of granitic soil (26.9% ~ 40.0%) was lower than that of other parent soil (4.8% ~ 94.2%). Differences in adsorption and desorption of fluorine by soil tested were related to soil mineral properties, especially the amount of oxides.