稀土元素具有许多优良的理化性质,被广泛应用于各行各业,因而导致了越来越多的稀土元素进入生物赖以生存的环境中。稀土元素可以通过食物链、呼吸道、皮肤等多种途径进入生物体内,并通过血液运输滞留或蓄积在各脏器组织。稀土是一类低毒性物质,适量摄入,对机体生理代谢和免疫功 Rare earth elements have many excellent physical and chemical properties, are widely used in all walks of life, resulting in more and more rare earth elements into the living environment. Rare earth elements through the food chain, respiratory tract, skin and other ways into the body, and stranded through the blood transport or accumulation in various organs and tissues. Rare earth is a type of low-toxic substances, adequate intake of the body’s physiological metabolism and immune function