气相色谱-质谱法测定丙烯酸丁酯中微量杂质及苯胺含量
GC-MS Determination of Impurities and Microamounts of Aminobenzene in Butyl Acrylate
摘 要
应用气相色谱-质谱联用法测定了丙烯酸丁酯(BAT)中的杂质成分并确定其中的苯胺为外界引入的污染物,也是造成BAT在使用中出现红色的原因.采用固相微萃取法(SPME)在选定的萃取温度(25 ℃)和萃取时间(2 h)条件下对污染物进行预富集后,用气相色谱-质谱法作进一步检测,结果确定因苯胺与使用中加入的丙烯酸反应的生成物呈现红色.根据此红色生成物的质谱图,对其反应机理作了探讨.
丙烯酸丁酯
苯胺
固相微萃取
红色生成物
GC-MS in hyphenation
Butyl acrylate
Aminobenzene
SPME
Red-colored product
Abstract
GC and MS in hyphenation was applied to the determination of impurities in butylacrylate (BAT).It was confirmed that among the impurities,aminobenzene was a pollutant introduced during transportation,and that the aminobenzene was the source of red coloration of BAT upon addition of acrylic acid in its usage.Under optimized conditions of temperature (25 ℃) and time (2 h) of extraction,SPME was used for enrichment of the pollutant,and it was further studied by GC-MS.As shown by the analytical results,the red coloration was produced by the reaction product of aminobenzene and acrylic acid.Based on the mass spectra of the red colored compound,mechanism of the reaction was discussed.
中图分类号 O657.63
所属栏目 工作简报
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收稿日期 2008/10/22
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备注王红卫(1966-),男,江苏如东人,高级工程师,硕士,研究方向为色谱、光谱和电化学等方面的进出口商品检验和科研工作.
引用该论文: WANG Hong-wei,HOU Jin,JIANG Tao,WANG Chao-ying,LU Xiang. GC-MS Determination of Impurities and Microamounts of Aminobenzene in Butyl Acrylate[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(4): 434～436
王红卫,侯晋,江涛,王超颖,吕翔. 气相色谱-质谱法测定丙烯酸丁酯中微量杂质及苯胺含量[J]. 理化检验－化学分册, 2009, 45(4): 434～436
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