18 17年 ,瑞典化学家Berzelius发现了硒 (Se)元素。开始 ,人们认为硒是一种有害元素 ,对硒的研究主要集中于其毒性方面。直到 195 7年Schwarz才首次证明硒为生物体中一种必需的微量元素。 1972年 ,Roetruck[1] 证实硒是谷胱甘肽过氧化物酶 (GSH Px)的活性成份。 1984年在第三届 In 18 17, the Swedish chemist Berzelius discovered the Se element. Initially, people think that selenium is a harmful element, the study of selenium mainly focused on its toxicity. Schwarz proved for the first time in 1971 that selenium was an essential trace element in living organisms. In 1972 Roetruck [1] demonstrated that selenium is the active ingredient of glutathione peroxidase (GSH Px). In 1984 in the third