纺织品中卡拉花醛的气相色谱-质谱联用法测定

摘要

A gas chromatography-mass spectrometric method was established for the determination of karanal in textiles.Karanal in textiles was ultrasonically extracted using methanol as extraction solvent.The extract was then analyzed by gas chromatography-mass spectrometry in selected ion monitoring mode (GC-MS/SIM).The concentration of karanal was calibrated by the external standard method.The limit of detection was 0.1 mg/kg.Good linearity existed between peak area and the mass concentration of karanal in the range of 0.14-28.18 mg/L.The average recoveries at three spiked levels of 0.71,2.82 and 7.05 mg/kg changed from 87.3％ to 96.1％.The precision(RSD,n =9) varied from 0.58％ to 2.4％.The proposed method was simple,accurate,and convenient to operate.It was appropriate for the determination of karanal in textiles in routine tests.%建立了测定纺织品中卡拉花醛含量的气相色谱-质谱联用方法,以甲醇为萃取溶剂,超声萃取纺织品中的卡拉花醛,萃取液直接进行气相色谱-质谱/选择离子监测法测定,外标法定量.该方法检出限为0.1mg/kg,在0.14～28.18 mg/L范围内,峰面积与质量浓度间存在良好的线性关系;当加标水平分别为0.71、2.82、7.05 mg/kg时,平均加标回收率为87.3％ ～96.1％,方法精密度(RSD,n=9)为0.58％～2.4％.该方法简便快速,准确可靠,易于操作,适用于纺织品中卡拉花醛的日常分析测试.