气相色谱-脉冲放电氦离子化检测器分析乙烯、丙烯中的痕量一氧化碳和氢气  

Determination of trace carbon monoxide and hydrogen in ethylene and propylene by gas chromatography with plused discharge detector

作　　者：李思睿[1] 张颖[1] 

机构地区：[1]中国石化北京化工研究院,北京100013

出　　处：《分析仪器》2014年第4期52-55,共4页Analytical Instrumentation

摘　　要：建立了气相色谱-脉冲放电氦离子化检测器（GC-PDHID ）测定乙烯、丙烯样品中痕量一氧化碳和氢气的方法。对色谱柱、柱温、进样方式等条件进行了优化。采用外标法定量，在一氧化碳和氢气浓度分别为12μL/m3～390μL/m3和52μL/m3～800μL/m3的范围内时，标准曲线R2均大于0.99，一氧化碳和氢气检出限分别为7.6μL/m3和8.6μL/m3。实验结果表明，样品加标回收率在94.74％～110.2％之间，相对标准偏差为0.32％～2.83％，样品分析周期为15min。该方法分离效果好，具有良好的重复性和准确度，检出限低。本方法适用于乙烯、丙烯中痕量一氧化碳和氢气的检测。A method for determination of trace carbon monoxide and hydrogen in both ethylene and propylene was established by GC-PDHID. The analysis conditions including column ,column temperature and injection mode were optimized. With the external standard method for quantitation ,good linear rela-tionships （ R2 ＆gt;0. 99 ） w hich ranged from 12 μL/m3 to 390μL/m3 （CO ）and 52μL/m3 to 800μL/m3 （H2 ） were obtained and the detection limits were 7.6μL/m3 （CO） and 8.6μL/m3 （H2 ） ,respectively .The experi-mental results showed that the recoveries of trace carbon monoxide and hydrogen in ethylene and propylene were between 94.74% and 110.2% ,the RSDs were between 0.32% and 2.83% ,and the separation was completed within 15min.The method is simple ,rapid ,which is sensitive and suitable for determination of trace carbon monoxide and hydrogen in ethylene and propylene.

关 键 词：GC—PDHID 一氧化碳 氢气 乙烯 丙烯 

分 类 号：O657.71[理学—分析化学]