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铝在自然界广泛分布,在地壳中含量很多,约占地壳重量的7.45%,是仅次于氧、硅居第三位的元素.但是人类使用铝,只是在1825年英国化学家戴维提炼出金属铝之后,迄今才有100多年的历史。在日常生活条件下,正常成年人每天从饮食中摄入的铝约为3～5毫克,吸收入体内的量只不过15微克左右,吸收的铝大多由肾脏排出,成人体内的总铝量维持在30～40毫克之间。
Aluminum is widely distributed in nature and contains a large amount of the earth’s crust, accounting for about 7.45% of the weight of the crust, which ranks third only to oxygen and silicon. However, aluminum is used only by British chemists David in 1825 Metallic aluminum, so far only 100 years of history. Under normal daily conditions, normal adults intake of dietary intake of about 3 to 5 mg of aluminum, absorbed into the body of the amount of only about 15 micrograms, most of the absorption of aluminum excreted by the kidneys, the body of the total amount of aluminum to maintain Between 30 to 40 mg.