气相色谱-质谱法测定纺织品中喹啉与异喹啉

建立了纺织品中喹啉和异喹啉的气相色谱-质谱检测方法。采用乙酸乙酯为溶剂,超声提取,经蒸发浓缩和定容后,以GC-MS测定。结果表明,喹啉和异喹啉在0.05～10.0 mg/L范围内线性良好(r0.999 0),回收率为82.0%～99.8%,相对标准偏差(n=6)为0.9%～3.8%;方法的定量下限为0.05 mg/kg。该方法灵敏度高、简便、高效、准确,可以满足纺织品中喹啉和异喹啉的检测需求。

Determination of Quinoline and Isoquinoline in Textiles by Gas Chromatography-Mass Spectrometry

A method was developed for the determination of quinoline and isoquinoline in textiles by gas chromatography-mass spectrometry(GC-MS).The experimental conditions for extraction were optimized.The textile samples were ultrasonically extracted with ethyl acetate as organic solvent.After being concentrated by evaporation and set to a certain volume,the extracts were determined by GC-MS.Under the optimal conditions,the calibration curves for quinoline and isoquinoline were linear(r>0.999 0) in the concentration range of 0.05-10.0 mg/L.Recoveries were in the range of 82.0%-99.8% with their relative standard deviations(RSD,n=6) of 0.9%-3.8%.The limits of quantitation were 0.05 mg/kg.The method was sensitive,simple,efficient and accurate,and could meet the requirements for detection of quinoline and isoquinoline in textile products.