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氣象色譜實用方法簡介

发布时间：2012-06-18 点击次数：1278次

气象色谱是二十世纪五十年代出现的一项重大科学技术成就。

這是一種新的分離、分析技術，它在工業、農業、國防、建設、科學研究中都得到了廣泛應用，氣象色譜可分爲氣固色譜和氣液色譜。

气相色谱可分为气固色谱和气液色谱。气固色谱指流动相是气体，固定相是固体物质的色谱分离方法。例如活性炭。硅胶等作固定相。气液色谱指流动相是气体，固定相是液体的色谱分离方法。例如在惰性材料硅藻土涂上一层角鲨烷，可以分离、测定纯乙烯中的微量甲烷、乙炔、丙烯、丙烷等杂质。

气相色谱中常用的载气有：氢气、氮气、氦气和空气。

这些气体除空气可由空压机供给外，一般都由高压钢瓶供给。通常都要经过净化、稳压和控制、测量流量。

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