作　　者： ; ; ;

机构地区： 华南理工大学化学与化工学院

出　　处： 《华南理工大学学报（自然科学版）》 2003年第8期31-35,共5页

摘　　要： 通过分析从石油亚砜中分离出来的组分PSO3E的红外光谱 (IR)和色质联用 (GC MS)谱图 ,推断石油亚砜组分PSO3E的可能的分子结构式 .从其IR和GC MS谱图可知PSO3E是环状结构亚砜 .按照环状亚砜的质谱裂解机理和PSO3E质谱图中最强峰的质荷比特征 ,推断PSO3E是五元环亚砜 .从PSO3E质谱的系列离子峰的情况得出碎片离子通式 :C+ n H2n - 1,CnH2nS+ OH和CnH+ 2n - 1S .根据碎片离子CnH2nS+ OH的质荷比来判断取代基在环上位置 ,当其质荷比为 91的峰值大于质荷比为 77的峰值时 ,为α取代 ;当质荷比为 77的峰值大于质荷比为 91的峰值时 ,为 β取代 .分析结果表明 ,PSO3E主要是一组同分异构体亚砜 。 The probable molecular structures of PSO3E which came from petroleum sulfoxide were deduced by analyzing IR and GC-MS spectra of PSO3E. According to the IR and GC-MS spectra of PSO3E, PSO3E was cyclic sulfoxides. In the light of the interpretation of mass spectra of cyclic sulfoxides and the character of the strongest peak of PSO3E mass spectra, PSO3E were a series five-membered cyclic sulfoxides. A series of PSO3E's ion peaks were found to be C + nH 2n-1,C nH 2nS +OH and C nH + 2n-1S through the interpretating the spectra of PSO3E. The position of substituted radical R was decided according to the peak of ion peaks of C nH 2nS +OH . Thus when the value of peak which m/e equals 91 is larger than that which m/e is 77, it was substituted by α-position, on the contrary, it was substituted by β-position. The analytic results show that PSO3E is a group of isomeric sulfoxides and, they are single alkyl sustituted cyclic sulfoxides.

关 键 词： 石油亚砜 质谱 结构分析 组分

领　　域： [石油与天然气工程]