摘要
采用多维气相色谱法,既可提高丙烯醛、丙酮、乙腈、丙烯腈相邻两组分的分离度,又可提高分析速度。按GDX-502与402的体积比为85∶15比例混装长4.5m、内径3mm的色谱柱;氢气作为载气,流速为65mL/min;柱箱初温140℃保持15min,以15℃/min的速率升至180℃保持12min。丙烯腈样品中7种组分即可全部出峰,总分析时间为30min,比原国标推荐的方法缩短了近50min。
The analysis speed and resolution of acrylonitrile, acetone, acrolein, acetonitrile were achieved by using multidimensional gas chromatography. The column（4.5 m × 3 mm i. d. ） was packed with GDX - 502 and 402 （ the volume ratio was 85 ： 15 ）. The carrier gas was hydrogen at flow rate of 65 mL/min. The initial temperature was set at 140℃ （ holding 15 min） , then was increased to 180℃ at 15℃/min（holding 12 min）. Seven components in acrylonitrile samples were separated completely. Total analysis time was about 30 min which was reduced 50 minutes compared with that of national standard method.
出处
《化学分析计量》
CAS
2007年第6期22-24,共3页
Chemical Analysis And Meterage
关键词
多维气相色谱法
丙烯醛
丙酮
乙腈
丙烯腈
分析速度
multi - dimensional gas chromatographic, acrylonitrile, increase, analysis speed
