全氟丙烷中的多种杂质色谱(DID)分析

The Analysis of Impurities in C_3F_8 Using DID Gas Chromatograph

概述了采用配置DID检测器的气相色谱分析全氟丙烷的原理及方法。利用中心切割技术对全氟丙烷中的H_2、O_2+Ar、N_2、CH_4、CO、CF_4、CO_2、C_2F_6、C_3F_8、C_3F_6、C_3H_2F_6、C_4F_8、C_3HF_7进行定量分析,用多种不同标气进行定性分析。实验结果证明,该方法能很好的避免C_3F_8主峰对各种碳氟化物杂质峰的干扰,分离效果好,响应高。

This paper introduces the principle and method to analysis the C3F8 using the GC with DID detector. Using the heart cut technology to analysis H-2,O2＋ Ar,N-2,CH4,CO,CF4,CO2,C2F6,C3F8,C3F6,C3H2F6,C4F8,C3HF7,and using different calibration gas to do the qualitative analysis work. The results shows this method can avoid the influence of the C3F8 to the other fluorochemicals,with well separation and high response.