一、金属与人体愈来愈多的研究证明金属与人体的关系十分密切,非常复杂。有些金属在一定量时是必需元素,超过一定量时则会引起人体中毒。过去认为对人体只是有害的金属现在证明是人体必需元素之一。例如三价铬是机体的耐糖因子之一;硒是一种必需营养素,谷胱甘肽过氧化物酶含硒。这种情况迫使我们必须从人类进化角度研究重金属与人体的关系。和田攻比较人体、地壳和海水中金属的含量,发现必需金属在体内的含量几乎与海水中含量成比 First, the metal and the human body more and more studies have shown that the metal and the human body is very close, very complex. Some metals in a certain amount of time is an essential element, more than a certain amount will cause human poisoning. Metals that used to be considered only harmful to the human body have now proved to be one of the essential elements of the body. For example, trivalent chromium is one of the body’s resistance to sugar; selenium is an essential nutrient, glutathione peroxidase containing selenium. This situation forces us to study the relationship between heavy metals and human beings from the perspective of human evolution. Hotan attack compared the human body, the metal content of the crust and sea water and found that the content of essential metals in the body is almost proportional to the content of sea water