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微量元素概述一、微量元素的概念: 人体和世界上所有的物质一样,都是由许多元素组成的。据目前所知,在地壳表层存在的90多种元素,几乎全部都能在人体内找到。关于元素的分类,各家意见不尽一致。一般认为可分为宏量元素与微量元素两大类。凡占人体总重量1/10,000以上者,称为宏量元素。如碳、氢、氧、氮、磷、硫六种是蛋白质、脂肪、醣和核酸的组分;钙、钾和镁是所有细胞内液的必要成分;钠和氯是细
Overview of trace elements First, the concept of trace elements: the body and all the world’s material, are composed of many elements. As far as we know, almost all of the 90 elements that exist on the surface of the Earth’s crust can be found in the human body. About the classification of elements, various opinions are not consistent. Generally believed that can be divided into macro elements and trace elements in two categories. Where the total body weight of 1 / 10,000 above, known as the macro element. Six such as carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur are components of proteins, fats, sugars and nucleic acids; calcium, potassium and magnesium are essential components of all intracellular fluids; sodium and chlorine are fine