超声提取-气相色谱法测定纺织品中三氯生

Determination of Triclosan in Textiles by Gas Chromatography Coupled with Ultrasonic Extraction

建立了一种气相色谱-电子捕获检测(GC-ECD)法测定纺织品中的三氯生,以二氯甲烷为提取溶剂,超声提取纺织品中的三氯生,并对提取条件进行了优化。该方法简便快速、灵敏度高,检出限(S/N=3)为5μg/L,平均回收率为99.11%～100.71%,相对标准偏差(RSD)为3.92%～6.85%。采用该方法对实际样品进行了测定,发现部分市售纺织品中含有高浓度的三氯生。

A gas chromatographic method was established to determine the content of triclosan in textiles coupled with ECD detector.Triclosan in textiles was ultrasonically extracted with dichloromethane as the extraction solvent.The extraction conditions were optimized.This method was rapid,accurate and sensitive.The detection limit was 5μg/L at the condition of S/N（signal/noise） =3.The average recoveries varied from 99.11% to 100.71% while RSDs changed from 6.85% to 3.92%,correspondingly.Triclosan in commercial textiles was analyzed using thus-established method and the results showed that high-content triclosan existed in some commercial textiles.