气相色谱法测定丙烯酸酯中三种阻聚剂含量  

Determination of three polymerization inhibitors in acrylic esters by gas chromatography

作　　者：王磊[1] 王淦[2] 吴越[1] Wang Lei;Wang Gan;Wu Yue(Department of Food and Environmental Engineering,Chuzhou Vocational and Technical College,Chuzhou Anhui 239000,China;College of Chemistry and Materials Science,Anhui Normal University,Wuhu Anhui 241000,China)

机构地区：[1]滁州职业技术学院食品与环境工程学院,安徽滁州239000 [2]安徽师范大学化学与材料科学学院,安徽芜湖241000

出　　处：《石油化工》2020年第7期669-673,共5页Petrochemical Technology

基　　金：安徽省高校自科研究重点项目(KJ2018A0840);滁州职业技术学院校级人才项目(YG2019022)。

摘　　要：建立了一种利用气相色谱同时测定丙烯酸酯中对羟基苯甲醚(MEHQ)、对苯二酚(HQ)和2,4-二甲基-6-叔丁基苯酚(TBX)等阻聚剂的方法。使用HP-5型石英毛细管柱(30 m×0.32 mm×0.25μm)分离、FID检测、内标法定量,测定了丙烯酸酯中3种阻聚剂的含量。实验结果表明,MEHQ,HQ,TBX在4.00~200.0 mg/L的浓度范围内线性关系均良好(R^2≥0.9992),检测限分别为7.92,10.34,5.84 mg/L,相对标准偏差分别为0.76%,1.48%,1.69%,加标平均回收率分别为92.06%~96.21%,96.02%~99.43%,95.28%~98.85%。该方法具有简便、灵敏、快捷、准确、稳定等特点,能满足实验室的定量分析需求。A gas chromatography method for simultaneous determination of polymerization inhibitors such as 4-methoxyphenol(MEHQ),hydroquinone(HQ)and 2-(tert-butyl)-4,6-dimethylphenol(TBX)in acrylic esters was established.The quantitative analysis was performed by using HP-5 type quartz capillary column(30 m×0.32 mm×0.25μm)separation,FID detection and internal standard method,and the content of three inhibitors in acrylic esters was determined.The result shows that the linear relationship of MEHQ,HQ and TBX is good in the concentration range of 4.00-200.0 mg/L(R^2≥0.9992).The limits of detection are 7.92,10.34,and 5.84 mg/L,respectively,the relative standard deviations are 0.76%,1.48%,and 1.69%,and the average recovery rates are 92.06%-96.21%,96.02%-99.43%,and 95.28%-98.85%.The method has the advantages of simple operation,high sensitivity,high speed,high precision and high stability.It can meet the needs of quantitative analysis in the laboratory.

关 键 词：气相色谱 丙烯酸酯 阻聚剂 对羟基苯甲醚 对苯二酚 2 4-二甲基-6-叔丁基苯酚 

分 类 号：O656.31[理学—分析化学]