摘要
采用GC-FID法同时测定汽油中5种苯胺类化合物(N-甲基苯胺、苯胺、邻甲苯胺、对甲苯胺和间甲苯胺)。试样选择直接进样或者稀释后进样的方式,采用强极性色谱柱(DB-WAX毛细管色谱柱)分离样品,火焰离子化检测器(FID)测定,用外标法进行定量分析。5种化合物在0.05~2.00mg/m L的范围内与其峰面积呈线性关系,检出限(S/N=3)为0.005mg/m L,加标回收率为93.62%~104.35%,精密度(n=6)为0.21%~1.60%。
A method for the determination of 5 aniline additives in gasoline by GC-FID was developed, and N-methylaniline, aniline, o-toluidine, p-toluidine, and m-toluidine were rapidly separated. Gasoline samples were directly analyzed by, gas chromatoraphy with external standard method under the optimal conditions, The calibration curves had the good linear relationship in the range of 0.05 - 2.00 mg/mL with detection limits of 0.005 mg/mL. The spiked recoveries ranged from 93.62% ~ 104.35% with relative standard deviations of 0.21% - 1.60%.
出处
《当代化工研究》
2017年第5期130-132,共3页
Modern Chemical Research
