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人体中的微量元素自然界存在的九十多种元素,人体中可以检出六十多种。人体重量的99.9%以上是由氢(H)、碳(C)、氮(N)、氧(O)、磷(P)、硫(S)、钙(Ca)、钾(K)、镁(Mg)、钠(Na)和氯(Cl)等十一种元素组成,被称为人体必需的宏量元素。剩下不足0.1%的是各种微量元素(又称痕量元素),在这五十多种微量元素中具有特殊生理功能的称为人体必需微量元素。目前已知的人体必需微量元素至少有十四种:氟(F)、铬(Cr)、锰(Mn)、铁(Fe)、钴(Co)、铜(Cu)、锌(Zn)、硒(Se)、钼(Mo)、碘(I)、硅(Si)、钒(V)、镍(Ni)、锡(Sn)。微量元素的生理功能至少有四个:
Trace elements in the human body there are more than 90 kinds of natural elements, the body can detect more than 60 kinds. 99.9% of the human body weight is composed of hydrogen (H), carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulfur (S), calcium (Ca), potassium Mg), sodium (Na) and chlorine (Cl) eleven kinds of elements, known as the human body necessary macro elements. The remaining less than 0.1% is a variety of trace elements (also known as trace elements), in these more than 50 kinds of trace elements with special physiological functions called the human body essential trace elements. At present, there are at least fourteen essential trace elements known to the human body: fluorine, chromium, manganese, iron, cobalt, copper, zinc, selenium, Se, Mo, I, Si, V, Ni and Sn. The physiological function of trace elements at least four: