本文主要叙述应用火焰光度检定器的气相色谱法,对苯中微量杂质噻吩、二硫化碳进行分离与测定。并对火焰光度检定器的气体流速效应作了探索。最低检出量噻吩0.05ppm,二硫化碳0.01ppm;相对平行误差<5%,与品红比色法比较相对误差<10%。样品分析时间5～6分钟。 This paper describes the use of flame photometric detector gas chromatography, trace impurities in benzene thiophene, carbon disulfide separation and determination. The gas flow velocity effect of flame photometric detector was also explored. The lowest detectable amount of thiophene 0.05ppm, carbon disulfide 0.01ppm; relative parallel error <5%, compared with the relative error of the magenta colorimetric method <10%. Sample analysis time 5 to 6 minutes.