ON THE OCCURRENCE OF SOME TRACE METALS IN THE EVE
ON THE OCCURRENCE OF SOME TRACE METALS IN THE EVE
复制标题
关于前夕中某些微量金属的出现
DOI：
10.1111/j.1755-3768.1954.tb05046.x
复制
发表时间：
1954
影响因子：
3.4
通讯作者：
A. Oksala
中科院分区：
文献类型：
--
作者：
A. Oksala
除了有机物之外，生物体还含有较少程度的无机物，这些无机物尽管含量很低，但作为生物体的结构和动力材料是非常重要的。在这些无机物中，所谓的微量元素自成一类。我们对微量金属在生物体中的存在及其意义的认识非常缺乏。我们甚至不知道有几种物质是否是生命所必需的，或者当它们被发现时，例如在器官中，它们是否偶然通过营养的方式漂流到那里。不同种类的动物可能需要不同的微量物质。这种需求甚至会受到年龄的影响。已经被证明了。G.肝脏的锰含量随年龄的增长而大大增加，而铁含量则在男性化年龄之前增加，之后开始下降。相反，肝脏中的铜和锌含量随着年龄的增长而略有下降。在生物体中发现了大约40种属于微量物质的元素。然而，其中只有少数被证明是人类和动物所必需的。它们是铁（Fe）、铜（Cu）、锰（Mn）、锌（Zn）、钴（Co）、碘（I）和氟（F）。铪（Al）、硼（B）、溴（Br）、硅（Si）、钼（Mo）等的必要性仍然是一个有争议的问题。
In addition to organic matter, the organism also contains to a lesser degree some inorganic substances which, in spite of their sinall amounts, are highly significant as structural and motive power material of the organism. Among these inorganic substances the so-called trace elements form a group of their own. Our knowledge about the occurrence of trace metals in and significance for the living organism is very deficient. We do not even know about several substances whether they are essential to life or whether, when found e.g. in organs, they have chanced to drift there by way of nutrition. Different species of animals may be in need of different trace substances. and this need can even be affected by age. I t has been proved e. g. that the mang,anese content of the liver greatly increases with advancing age, whereas the iron content increases until the age of virility and begins to fall thereafter. Instead, the copper and zinc content of the liver slightly decrease with advancing age. Approximately 40 elements belonging to the trace substances have been found in the organism. However, only a few of them have been proved essential for humans and animals. These are iron (Fe) , copper (Cu), manganese (Mn), zinc (Zn) , cobalt (Co) , iodine ( I ) and fluorine (F) . The essentiality of a h ininium (Al), boron ( B ) , bromine (Br) , silicon (Si) , molybdenum (Mo) etc. ist still a matter of controversy.