摘要
建立了气相色谱 质谱联用 (GC/MS)测定苯乙烯中阻聚剂对叔丁基邻苯二酚含量的方法。苯乙烯样品直接进样 ,通过毛细管柱 (HP 1,30m× 0 32mmi.d .× 0 2 5 μm)分离 ,由电子轰击 (EI)源于选择离子监测 (SIM)模式下进行检测。结果表明 ,对叔丁基邻苯二酚含量在 5mg/kg～ 5 0mg/kg时线性关系良好 (r2 =0 9987) ,回收率高 ;与美国材料测试标准ASTMD4 5 90中的分光光度测量法比较具有操作简捷、准确度高的特点。
An efficient method for the determination of p tert butylcatechol (TBC) in styrene monomer by gas chromatography/mass spectrometry (GC/MS) has been established. The sample was injected directly, and separated by gas chromatography with capillary column (HP 1, 30 m×0 32 mm i.d. ×0 25 μm), then determined by a mass spectrometer with electron impact (EI) at selected ion monitoring (SIM) mode. There was a good linear relationship within the range of 5 mg/kg- 50 mg/kg ( r 2 = 0 998?7 ). Compared with the colorimetric determination by a spectrophotometer (ASTM D4590), the method was proved to be fast and accurate.
出处
《色谱》
CAS
CSCD
北大核心
2002年第3期272-273,共2页
Chinese Journal of Chromatography
