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汽油中硫酚类化合物的存在,使汽油在储存过程中发生沉渣,并加深颜色,影响汽油的稳定性.掌握流出口汽油中的硫酚类化合物的含量可以预示该油样的稳定性,也可以为精制方案提供参考。Murry 曾用氢氧化钠溶液从汽油中萃取出苯酚及硫酚类化合物,用紫外光谱测定,但未报导它们的氧化速度。在实际工作中发现采用这一方法时,采样后碱溶液抽提的时间对测定结果影响极大。已知硫酚转化为钠盐后,比较稳定。因此本文仍沿用 Murry 所用
The presence of thiophenols in gasoline causes the sedimentation of gasoline in the storage process and deepens the color and affects the stability of the gasoline. Grasping the content of thiophenols in the gasoline at the outlet can predict the stability of the oil sample. Refining programs can provide a reference. Murry had extracted phenol and thiophenols from gasoline using sodium hydroxide solution and measured UV spectroscopy but did not report their rate of oxidation. In the actual work found that the use of this method, the sampling time of alkaline solution extraction results greatly affected. Thiophenol is known to be converted to sodium, more stable. Therefore, this article is still used by Murry