气相色谱法测定汽油中醇类和醚类含量

摘要

应用气相色谱法测定了汽油中醇类和醚类化合物的含量,并通过调整分流比、阀切换时间、阀复位时间,确定了最佳操作条件.在最佳操作条件下,色谱基线平稳,轻烃组分不会对醇类和醚类化合物的分离造成干扰,各组分的回收率大于94%,能够在25 min内准确地测定汽油中醇类和醚类化合物的含量.%Gas chromatography is applied to the quantitation of alcohols and ethers in gasoline.The optimal operating conditions are determined by adjusting the split ratio,switching time and resetting time of the valve.Under such operating conditions,the baseline was smooth and the light hydrocarbon components don't interfere with the separation of alcohols and ethers.In addition,the retrieval rate of each of these components is over 94% and compounds of alcohols and ethers in gasoline can be determined exactly within 25 minutes.