气相色谱法测定焦油中微量苯稠杂环化合物  

Determination of trace benzene condensed heterocyclic compounds in coal tar by gas chromatography

作　　者：闫建康 Yan Jiankang(Shanxi Provincial Inspection Body and Laboratory(National Center of Quality Supervision and Inspection for Coal and Coal Chemical Product),Taiyuan 030032,China)

机构地区：[1]山西省检验检测中心(国家煤及煤化工产品质量监督检验中心),山西太原030032

出　　处：《炼油与化工》2021年第1期65-67,共3页Refining And Chemical Industry

摘　　要：利用蒸馏分离—气相色谱法技术,建立了同时测定煤焦油中苊、氧芴和芴的分析方法。通过对色谱条件的优化,以甲苯为溶剂,正十二烷为内标物,将煤焦油馏分采用DB-5毛细管柱,对煤焦油中苊、氧芴和芴定量分析。分析结果表明:3种主要成分线性关系良好,相关系数均大于0.9995,加标回收率为95.4%~102.4%,相对标准偏差为2.89%~7.14%。该方法分离效果好,检测结果准确、可靠。An analytical method for determination of acenaphthene,dibenzofuran and fluorene in coal tar was established using distillation separation-gas chromatography technique.By optimizing the chromatographic conditions,using toluene as the solvent and n-dodecane as the internal standard,employing DB-5 capillary column,a quantitative analysis on acenaphthene,dibenzofuran and fluorene in coal tar was conducted.The results showed that,the 3 main components had good linear relationship,the correlation coefficients were all above 0.9995,recovery rates were 95.4%~102.4%and the relative standard deviation(RSD)ranged was at 2.89%~7.14%.The separation effect of this method was good,and the inspection result was accurate and reliable.

关 键 词：蒸馏分离 苯稠杂环化合物 气相色谱法 

分 类 号：O657.71[理学—分析化学]