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离子型稀土矿地球γ辐射水平为２２．７～２６．５×１０￣（－８）Ｇｙ·ｈ￣（－１），原矿￣（２２６）Ｒａ含量高于对照区和广东省土壤约１倍，显示地质形成中铀系放射性的富集现象。氧化稀土总比活度达１１．６×１０￣４Ｂｇ·Ｋｇ￣（－１），为我国现行标准放射性工作定值的约１．７倍。稀土分离厂应做好预防性卫生监督和工作人员的健康监护。
The γ radiation level of ionic rare earth ore is 22.7-26.5 × 10 -8 Gy · h -1, and the content of 226 Ra in ore mine is higher than that of the control area and the soil of Guangdong Province , Showing the enrichment of radioactive uranium series in geological formation. The total specific activity of rare earth oxide is 11.6 × 10 ~ 4Bg · Kg ~ (-1), which is about 1.7 times of the standard value of radioactive work in our country. Rare earth separation plant should make preventive health surveillance and staff health care.