人体必需微量元素钴的研究人体内具有明显营养作用及生理功能的必需微量元素有铁、铜、锌、锰、硒、碘、铬等。过去，人们总是把钴元素当作是有害元素。实际上，这种看法很片面，钴也是人体必需的微量元素。地壳内含钴量相当多（２３ｐｐｍ），正常人体含钴总量约为１８．... The human body essential trace element cobalt research The human body has obvious nutrients and physiological functions of the necessary trace elements are iron, copper, zinc, manganese, selenium, iodine, chromium and so on. In the past, people always regard cobalt as a harmful element. In fact, this view is very one-sided, cobalt is also the human body essential trace elements. The amount of cobalt in the crust is quite high (23ppm), and the total amount of cobalt in normal humans is about 18%. ...