【摘要】 <正> 汽油的族组成分析,已有的标准方法多采用液体吸附色谱法,气相色谱分析汽油族组成已有一些报道,但烯烃的定量方法仍较复杂,精确度也差。1981年Ury提出采用硫酸铜吸附烯烃并在高温下脱附,以对汽油中烯烃定量可以简化操作手续,并保证更多还原

【Abstract】 Saturates, olefins and aromatics in gasoline have been determined by GC. The aromatics were separated at first with a packed column of polar stationary phase (N,N-di-α-cyanoethyl formamide) and then back Hushed into an FID detector forquantitation. Olefins and saturates were passed through a CuSO4 column where olefins were adsorbed at lower temperature (75℃), and saturates are determined as a single peak. Olefines were then determined as a single peak by heating up (310℃) the CuSO4 column. A single run takes less than 30 minutes. Both accuracy and repro-ducibility are good enough for the routine analysis.更多还原