微量元素与人体健康的问题,近二三十年来,已为国内外学者所瞩目,亦为人们广泛关注的问题。占人体总重量不到0.05%的20多种微量元素,竟然关系到人类的生、老、病、死的大问题,这在二三十年前是人们难以想象的事,而今天却是活生生的现实。在动植物体中所含元素,据研究结果可知,竟多达60种以上。按其含量的多少,可分为常量(或巨量、宏量)元素和微量(或痕量)元素两大类。即含量在万分之 Trace elements and human health problems, the past two decades, has attracted the attention of scholars at home and abroad, but also for people’s attention. Less than 0.05% of the total body weight of more than 20 kinds of trace elements, even related to human health, old, sick, big problem, which in 20-30 years ago is unimaginable thing, but today it is living Reality. Elements contained in plants and animals, according to the results of the study, actually as many as 60 or more. According to their content, can be divided into constant (or huge amount, macro) elements and trace (or trace) elements of two categories. That is, the content is in ten thousandths