Analysis of p-hydroxyanisole in acrylonitrile and methyl acrylate by GC-MS
CHU Yan-jie1, YUAN Hang2, ZHANG Shan-ying3, LIU Wen-tao1,4, LIU Hao1, ZHU Cheng-shen1
1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; 2. Modern Analysis and Gene Sequencing Center, Zhengzhou University, Zhengzhou 450001, China; 3. Zhengzhou Siwei Special Materials Co., Ltd., Zhengzhou 450199, China; 4. Henan Provincial Key Laboratory of Advanced Nylon Materials and Applications(Zhengzhou University), Zhengzhou 450001, China
Abstract: A gas chromatography-mass spectrometry method is established for the determination of trace p-hydroxyanisole polymerization inhibitor in industrial acrylonitrile and methyl acrylate.In which,a SH-RXI-5MS (30 m×0.25 mm×0.25 μm) type capillary column is used for separation,mass detection (EI) is used for detection,and external standard curve method is used for quantification.Standard recoveries of p-hydroxyanisole (MEHQ) are in the range of 99.4%-101.9%,the relative error is in the range of 0.1%-6.7%,the detection limit is as low as 0.024 mg·L-1,and the sensitivity is high.Target compound MEHQ shows a good linear relationship in the range of 0.400-80.000 mg·L-1,with a linear correlation coefficient of R2≥0.999.The relative standard deviations of the measurement results on different days are all lower than 3.0%,which has good accuracy and precision.This method has been successfully applied to the detection of trace MEHQ in industrial acrylonitrile and methyl acrylate,while ensuring the safety of testers.
楚艳杰, 袁航, 张善营, 刘文涛, 刘浩, 朱诚身. 气质联用法分析丙烯腈和丙烯酸甲酯中对羟基苯甲醚[J]. 现代化工, 2020, 40(11): 230-233.
CHU Yan-jie, YUAN Hang, ZHANG Shan-ying, LIU Wen-tao, LIU Hao, ZHU Cheng-shen. Analysis of p-hydroxyanisole in acrylonitrile and methyl acrylate by GC-MS. Modern Chemical Industry, 2020, 40(11): 230-233.
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