轻质油品中元素硫的结构变化对其定量分析的影响

Effect of Elemental Sulfur Structure Change in Light Oils on Its Quantity Analysis

利用气相色谱-质谱联用仪开发了轻质石油馏分及石油产品中元素硫(S0)的定量分析方法,在此基础上,研究了不同温度下轻质石油馏分及石油产品中元素硫存在的结构形式。实验表明,该分析测定条件下油品中元素硫的结构会发生变化,生成少量S2、S6、S7,且遵循一定规律,即S2∶S6∶S7∶S8的质量比为0.13∶0.05∶0.04∶1.00,因此轻质油品中元素硫结构随温度变化对其定量分析无明显影响。

The structure of elemental sulfur （S^0） in light Petroleum fraction and petroleum product was studied basing on that a new analytical method for determination of So was developed using gas chromatography-mass spectrometry （GC/MS）. The result shows that the structure of So is changed and obtains a small quantity of S2 ,S6 ,S7. The mass proportion of S2 ： S6 ： S7 ： S8 is 0.13 ： 0.05 ： 0.04 ： 1.00 under the analysis condition. So the change of So structure with temperature has no evidence effect on its quantity analysis.