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目的建立空气中6种酚类化合物硅胶管吸附采样-毛细管柱气相色谱同时测定的方法。方法空气中酚类化合物经硅胶管吸附采集,用乙醇解吸后经HP-5石英毛细管柱(30.00 m×0.32 mm×0.25μm)分离,火焰离子化检测器(FID)检测。结果本法采样效率为95.3%~100.0%;解吸效率为78.6%~92.5%;加标回收率为89.2%~114.0%;方法精密度为2.6%~9.8%;检测限0.81~1.00 mg/L 该法简便易行、灵敏准确、抗干扰能力强,适用于空气中多种酚类化合物的测定。
Objective To establish a method for the simultaneous determination of 6 phenolic compounds in air by adsorption and capillary gas chromatography. Methods The airborne phenolic compounds were collected by silica gel tube, desorbed by ethanol and separated by HP-5 quartz capillary column (30.00 m × 0.32 mm × 0.25 μm). Flame ionization detector (FID) was used to detect the phenolic compounds. Results The sampling efficiency was 95.3% ~ 100.0%, the desorption efficiency was 78.6% ~ 92.5%, the recoveries were 89.2% ~ 114.0%, the method precision was 2.6% ~ 9.8%, the detection limit was 0.81 ~ 1.00 mg / L The method is simple, sensitive and accurate, anti-interference ability, suitable for the determination of a variety of phenolic compounds in the air.