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本文用气相色谱法分析了大气中污染物21种,浓度范围从0.001到0.01毫克/米~3。其中除丙烯醛外,20种污染物的检出量均低于规定的允许浓度。采用自制的一些鉴定器和多流路反冲等技术,在痕量以及常量、痕量组分共存同时测定时达到了快速、直接测定(事先不经浓缩)的目的。所用色谱柱包括分配色谱柱和吸附色谱柱,其中5A分子筛色谱柱经累计1500小时运转表明,柱子的分离性能良好、能满足长期使用的要求。
In this paper, gas chromatographic analysis of 21 kinds of pollutants in the atmosphere, the concentration range from 0.001 to 0.01 mg / m ~ 3. In addition to acrolein, the detection of 20 kinds of pollutants were below the allowable concentration. Using some self-made detector and multi-channel recoil technology, it achieves the purpose of rapid and direct determination (without concentration in advance) when the trace and constant and trace components coexist simultaneously. The columns used included the distribution column and adsorption column. The 5A molecular sieve column operated for 1500 hours showed that the separation performance of the column was good and could meet the requirements of long-term use.