微波辅助萃取/气相色谱法测定抗菌纺织品中的三氯生

Determination of Triclosan in Antimicrobial Textiles by Gas Chromatography Assisted with Microwave Extraction

以二氯甲烷为萃取溶剂,采用微波辅助萃取技术萃取抗菌纺织品中的三氯生,建立了一种气相色谱-电子捕获检测器(GC-ECD)方法对纺织品中的三氯生进行了测定。对于阳性样品,采用GC/MS技术进行确认。该方法简单快速、灵敏度高,检出限为1μg/kg(S/N=3),回收率为90%～106%,RSD均小于6%。采用该方法对市售的抗菌纺织品进行测定,结果显示,部分市售抗菌纺织品中含有高浓度的三氯生。

The determination of triclosan in antimicrobial textiles was established by a gas chromatography （GC） method coupled with an electron capture detector （ECD）. As for the positive samples, GC/MS was used for the confirmation of triclosan. Triclosan in antimicrobial textiles was microwave-assisted extracted using dichloromethane as the extraction solvent. This method was rapid, accurate and sensitive. The detection limit was 1 μg/kg at the signal to noise ratio of 3 （S/N - 3 ）. The recovery ratio varied from 90% to 106%, while the RSD was all less than 6%. the established method, and the available antimicrobial textiles. Triclosan in commercially available antimicrobial textiles was analyzed using results showed that a large amount of triclosan existed in some commercially