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建立了测定染料产品中喹啉含量的气相色谱(外标法)检测方法。用气相色谱对样品中的喹啉及其他有机组分进行分离,用峰面积外标法进行定量。通过气相色谱-质谱联用仪对喹啉和异喹啉进行了定性。喹啉的检出限为10 mg/kg,样品的加标回收率为70%~130%;喹啉检测的相对标准偏差小于2%。结果显示,该方法线性良好,回收率、精密度好,灵敏度高,符合检测要求。
A gas chromatography (external standard method) method for the determination of quinoline in dye products was established. Quinoline and other organic components in the sample were separated by gas chromatography and quantified by peak area external standard method. Quinoline and isoquinoline were characterized by gas chromatography-mass spectrometry. The detection limit of quinoline was 10 mg / kg, the spiked recoveries were 70% -130% and the relative standard deviations of quinoline were less than 2%. The results show that this method has good linearity, good recovery, good precision, high sensitivity and meets the testing requirements.