钒在自然界中分布很广,在地壳中含量是0.015%。由于它具有许多可贵的理化特性和机械特性,因而能广泛地应用于近代技术中。而钒的化合物对人体是有毒的,它可引起急性和慢性中毒。据匈牙利研究指出,钒酸盐过高对动物和植物会有害和中毒,对动、植物刺激作用有利浓度是。植物为0.1—0.2mgV_O_5/升·H_2O,动物(鼠和猪)0.5—1.0mg Vanadium is widely distributed in nature and contains 0.015% of the earth’s crust. Because of its many valuable physical and chemical properties and mechanical properties, it can be widely used in modern technology. The vanadium compounds on the human body is toxic, it can cause acute and chronic poisoning. According to the Hungarian study pointed out that vanadate is too high for animals and plants will be harmful and poisoning, animal and plant stimulation of the favorable concentration is. 0.1-0.2 mg V_O_5 / liter · H_2O for plants, 0.5-1.0 mg for animals (rats and pigs)