蒸馏-色谱法测定煤焦油中甲基萘含量  

Determination of methylnaphthalene content in coal tar by gas chromatography

作　　者：王永苗[1] 

机构地区：[1]国家煤及煤化工产品质量监督检验中心,山西太原030012

出　　处：《山西化工》2013年第2期38-39,43,共3页Shanxi Chemical Industry

摘　　要：建立了蒸馏-色谱法测定煤焦油中甲基萘含量的分析方法。以乙醇为溶剂,将煤焦油蒸馏后馏分采用HP-5毛细管柱分离,氢火焰离子化检测器检测,外标法对甲基萘中β-甲基萘和α-甲基萘进行定性定量分析。该方法分离效果好,所测定的结果具有良好的准确度和精密度,样品的回收率在97.8%～103.5%。A distillation chromatography method for the determination of methylnaphthalene content in the coal tar was established. The method use ethanol as a solvent, the system is equipped with HP-5 capillary gas chromatography and FID detector, the content is determined by the external standard method. The results showed that the composition in the distillation could be well separated, the method had good accuracy and precision. The recovery rate is 97.8% ~ 103.5%.

关 键 词：煤焦油 Β-甲基萘 Α-甲基萘 蒸馏-色谱法 

分 类 号：O657.7[理学—分析化学] O658.3[理学—化学]