衰减全反射中红外光谱法快速测定车用汽油中共轭二烯烃和烯烃含量  

Rapid determination of conjugated dienes and olefins in automobile gasoline by ATR-MIR spectroscopy

作　　者：吕玉平 陈鸿雁 闻环 王荣华 林志生 徐玲 LüYuping;Chen Hongyan;Wen Huan;Wang Ronghua;Lin Zhisheng;Xu Ling(National Quality Supervision&Testing Center for Petroleum and Petrochemical Products(Guangdong),Huizhou Guangdong 516003,China;School of Chemistry and Materials Engineering,Huizhou University,Huizhou Guangdong 516007,China)

机构地区：[1]国家石油石化产品质量监督检验中心(广东),广东惠州516003 [2]惠州学院化学与材料工程学院,广东惠州516007

出　　处：《石油化工》2020年第11期1106-1110,共5页Petrochemical Technology

摘　　要：采用衰减全反射中红外光谱(ATR-MIR)分析技术,选取了110个不同来源、不同型号的国Ⅵ(A)级别成品车用汽油试样,以顺丁烯酸酐法测定结果为共轭二烯烃参考值,以气相色谱法测定结果为烯烃参考值,采用偏最小二乘法建立了统一的共轭二烯烃和烯烃的ATR-MIR校正模型,适用于快速预测国Ⅵ级别成品车用汽油中共轭二烯烃和烯烃含量。实验结果表明,交互验证后的线性相关系数分别为0.9893和0.9951,均方误差为0.110和0.639;ATR-MIR法与国标及行业标准方法准确度相当,无显著性差异;ATR-MIR法具有分析快速、准确度高、分析成本低等优点。Using attenuated total reflection mid-infrared spectroscopy(ATR-MIR)analysis technology,110 samples of nationalⅥ(A)grade automotive gasoline products from different sources and models were selected.The results determined by the maleic anhydride method were used as reference values for conjugated dienes.Taking the results of gas chromatography as the olefin reference value,a unified mid-infrared spectroscopy correction model of conjugated dienes and olefins was established by the partial least squares method,which is suitable for the rapid prediction of conjugated dienes and olefins in nationalⅥgrade finished motor gasoline content.The result shows that the linear correlation coefficients after cross-validation are 0.9893 and 0.9951,respectively.The mean square errors are 0.110 and 0.639.The accuracy of the ATR-MIR method is equivalent to that of the national and industry standards.There is no significant difference.The ATR-MIR method has the advantages of fast analysis,high accuracy,and low analysis cost.

关 键 词：衰减全反射中红外光谱 快速测定 车用汽油 共轭二烯烃 烯烃 

分 类 号：O657.33[理学—分析化学]