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

The structure of elemental sulfur (S⁰) in light Petroleum fraction and petroleum product was studied basing on that a new analytical method for determination of S⁰ was developed using gas chromatography-mass spectrometry (GC/MS). The result shows that the structure of S⁰ 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 S⁰ structure with temperature has no evidence effect on its quantity analysis.