气相色谱法测定工业废气中二硫化碳富集方法的研究

Study on method of carbon disulfid concentator in air by gas chromatography

研究了大气中痕量二硫化碳在 SQ-2 0 6(以 1 0 %的 SE-3 0为固定液 ,配火焰光度检测器 )上的测定方法及二硫化碳的富集和解吸条件的选择。以碳分子筛为吸附剂 ,最佳收集速度为 2 0 ml/min,解吸液体积 1 5 ml,解吸时间 3 5 min。用外标法定量 ,测定的回收率为 99.2 % ,最低检出浓度 2 .0 4× 1 0 - 8g/

In the paper, the method for determination of trace amount of carbon disulfid in air was studied by model SQ 206 gas chromatograph with 10% SE 30 and flame photometric detector The conditions of concentrator and desorption of carbon disulfid were studied With the absorbent of carbon molecular sieve The optimun desorption velocity, desorption volume and desorption time are 20ml/min, 15 ml and 35 min The recovery of sample was 99 2% The detection limit and recovery are 2 04×10 -8 g/L, 99 2%