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火焰原子吸收光谱法由于基体干扰少、操作简便、设备廉价得到了广泛应用,但同时又因为灵敏度不够高其应用受到某些限制,非火焰的石墨炉原子吸收分析法,灵敏度较火焰法有很大提高.但由于有较严重的基体效应、设备复杂、价格昂贵,目前在我国还没有火焰法应用普遍,为了把二者的优点结合起来,1976年就有人提出了原子捕集技术和缝石英管技术,用来增强火焰原子吸收分析灵敏度,缝石英管法是将直径8—10mm,长140mm的石英管上下各开一缝口,置于燃烧头的火焰口上,以常规火焰法进行原子化,由于原子蒸气在石英管内受阻,增长了原子在光路中的停留时间,提高了分
Flame atomic absorption spectrometry due to less matrix interference, easy operation, cheap equipment has been widely used, but at the same time because of the sensitivity is not high enough for its applications are subject to certain restrictions, non-flame graphite furnace atomic absorption spectrometry, the sensitivity is better than the flame method However, due to the more serious matrix effect, the equipment is complicated and the price is expensive, at present, there is no flame method used widely in our country. In order to combine the advantages of the two, some people proposed the atom trapping technology and stitched quartz Tube technology, used to enhance the flame atomic absorption spectrometry sensitivity, quartz tube method is to slit the diameter of 8-10mm, 140mm long quartz tube up and down each open a slit, placed in the burner head flame mouth, the conventional flame atomization , Due to atomic vapors blocked in the quartz tube, an increase of the atomic residence time in the light path, increased the score