稀土氧化物及其盐类,是重要的工业原料,用途极广。国内稀土金属的毒性研究不多,稀土粉尘对肺的损伤报道亦少。们,我们在稀土生物毒性研究的基础上,进行了稀土粉尘对家犬肺脏致纤维化作用的实验研究,以期探讨稀土粉尘对机体的危害。一材料和方法 1.实验用稀土精矿粉由国内某钢铁公司 Rare earth oxides and their salts, is an important industrial raw materials, a very wide range of uses. Toxicity of rare earth metals is not much reported rare earth dust damage to the lungs. We, on the basis of the study of rare earth biological toxicity, carried out the experimental study of the effect of rare earth dust on the lungs of dogs caused by fibrosis, in order to explore the harm of rare earth dust on the body. A Materials and Methods 1. Experimental rare earth concentrate by a domestic steel company