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对１８６例稀土作业工人的血清ＩｇＧ、ＩｇＡ、ＩｇＭ和补体Ｃ３进行测定，并与１２０例非烯土作业者进行了对比观察，还测定了作业环境粉尘浓度、总放射性和ｒ照射量率。稀土作业工人的ＩｇＧ、ＩｇＭ和Ｃ３均有明显变化（Ｐ＜０．０１或Ｐ＜０．０５），提示稀土作业环境对工人的体液免疫有一定影响。但依据总放射量中位数，作业环境为开放性放射性场所最低类（第三类），个体的ｒ照射率远低于标准，故可认为单一放射性因素对稀土作业工人免疫功能似无明显影响。
The serum levels of IgG, IgA, IgM and complement C3 were measured in 186 rare earth workers and compared with 120 non-alkene workers. The dust concentration, total radioactivity and r irradiation rate were also measured. There was a significant change in IgG, IgM and C3 in rare earth workers (P <0.01 or P <0.05), suggesting that rare earth working environment had some impact on humoral immunity of workers. However, based on the median of the total radioactivity, the working environment is the lowest type of open radioactive sites (category 3), and the individual r exposure rate is much lower than the standard. Therefore, it can be considered that single radioactive factors have no obvious effect on immune function of rare earth workers .