顶空气相色谱法测定P（NIPAM-CO-MMA）体系中甲基丙烯酸甲酯及其水解产物残留量

摘要

Objective： To establish a method of Head-space capillary gas chromatography for the determination of methyl methacrylate and its hydrolysis products including methacrylic acid and methanol in P（NIPAM-CO-MMA）.Methods： The three organic solvents were determined by headspace gas chromatography on HP-INNOWAX column with FID detector,nitrogen as the carries.Results： Under the established chromatographic condition,all the three residual solvents were well separated and had good linear range.R2 were 0.9996,0.9991 and 0.9993 respcetively.The average recoveries were from 98% to 102%.RSD of precision were 0.41%、0.99% and 0.87%,RSD of repetition were 1.32%、1.84% and 2.01%.Conclusion： The method was simple,sensitive and accurate.It can be used to determine the residual methyl methacrylate and its hydrolysis products in P（NIPAM-CO-MMA）.%目的：建立测定P（NIPAM-CO-MMA）体系中的甲基丙烯酸甲酯及其水解产物残留量。方法：采用顶空进样毛细管气相色谱法,HP-INNOWAX毛细管柱,以氮气为载体,用FID检测器,测定P（NIPAM-CO-MMA）体系中的甲基丙烯酸甲酯、甲基丙烯酸和甲醇的含量。结果：3种有机溶剂完全分离,浓度在考察范围内有良好的线性关系,线性相关系数R2分别为0.9996、0.9991、0.9993,回收率均在98%～102%之间,精密度相对误差RSD分别为0.41%、0.99%、0.87%,重复性相对误差RSD分别为1.32%、1.84%、2.01%。结论：本法快速、灵敏、准确,可用于本品中3种有机溶剂的测定。