气相色谱-质谱联用法测定丁二烯中对叔丁基邻苯二酚含量  

Determination of p-tert-butylcatechol content in butadiene monomer by gas chromatography-mass spectrometry

作　　者：许琳[1] 张齐[2] 李海强[3] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640 [2]中国石化北京化工研究院,北京100013 [3]中国石化齐鲁股份有限公司橡胶厂,山东淄博255438

出　　处：《合成橡胶工业》2009年第3期193-195,共3页China Synthetic Rubber Industry

摘　　要：采用气相色谱-质谱联用（GC—MS）法测定丁二烯中阻聚剂对叔丁基邻苯二酚（TBC）含量，并与分光光度法和液相色谱法进行了比较。结果表明，用甲苯作为TBC的溶剂，其在被测组分的出峰区域不会形成干扰；采用选择离子模式检测可提高灵敏度，TBC质量分数为1×10^-6～50×10^-6时，外标法测定TBC含量的线性回归系数为0．9995，加标回收率为98．60％～102．73％，相对偏差为2．42％～3．87％；GC—MS法与分光光度法、液相色谱法测得丁二烯中TBC含量相近，但GC—MS法更简便和快捷。The content of p-tert-butylcatechol （TBC） in butadiene monomer was determinated by gas chromatography-mass spectrometry （GC-MS） , compared with those determinated by spectrophotometry and liquid chromatography （ LC）. The results showed that with toluene as solvent of TBC, it would not disturb TBC peak in the total ion chromatogram. The sensitivity of detection was improved by selected ion monitoring mode. There was a good linear relationship within the range of 1 ×10^-6 to 50 ×10^-6 （ correlation coefficient 0. 999 5 ） for external standard method, and the recovery was in the range of 98.60% -102.73% . The TBC content in butadiene determined by GC-MC was similar to those detected by spectrophotometry and LC, and it was proved to be fast and easy.

关 键 词：气相色谱-质谱联用法 丁二烯 阻聚剂 对叔丁基邻苯二酚 

分 类 号：TQ330.7[化学工程—橡胶工业]