气相色谱-质谱法测定煤炭中单质硫的含量  

Determination of elemental sulfur in coal by gas chromatography-mass spectrometry

作　　者：严莎[1] 高博[1] 罗蔷[1] 

机构地区：[1]天津出入境检验检疫局化矿金属材料检测中心,天津300456

出　　处：《分析试验室》2016年第2期180-183,共4页Chinese Journal of Analysis Laboratory

基　　金：天津出入境检验检疫局科技计划项目(2013TK057)资助

摘　　要：建立了索氏抽提与气相色谱-质谱联用法测定煤样中单质硫的方法。研究以正己烷作为溶剂,索氏抽提,用气相色谱-质谱法的离子选择监测对煤炭中的单质硫进行检测。在5.0-50 mg/L范围内,该方法具有良好线性关系,相关系数为0.995,平均回收率为87.4%-95.4%,相对标准偏差在2.6%-4.4%之间。A sensitive method was developed for the determination of elemental sulfur in coal via the soxhlet extraction method followed by gas chromatography-mass spectrometry （GC-MS）. Samples were extracted by soxhlet with hexane. Elemental sulfur was tested by the SIM mode of GC-MS. The results showed that this method had good linear relationship with the correlation coefficient of 0. 995. The average recoveries were ranged from 87.4% to 95.4% with the relative standard deviations of 2.6% -4.4%. The method was simply, sensitive and repeatable with simultaneous determination of elemental sulfur in coal. Therefore, the method could meet the demand for routine analysis of elemental sulfur in coal.

关 键 词：煤 单质硫 气相色谱-质谱法 

分 类 号：TQ533.1[化学工程—煤化学工程]