超声萃取/液相色谱-串联质谱法测定染整助剂中的二硬脂基二甲基氯化铵  

Determination of Distearyl Dimethyl Ammonium Chloride in Dyeing and Finishing Textile Agents by Ultrasound-assisted Extraction/LC-MS/MS

作　　者：李全忠[1] 周明辉[1] 岳大磊[1] 郑建国[1] 刘莹峰[1] 翟翠萍[1] 

机构地区：[1]广东出入境检验检疫局,广东广州510623

出　　处：《分析测试学报》2011年第12期1444-1447,共4页Journal of Instrumental Analysis

基　　金：国家质检总局科研项目(2010IK039)

摘　　要：建立了超声辅助萃取/液相色谱-串联质谱(LC-MS/MS)测定染整助剂中二硬脂基二甲基氯化铵(DSDMAC)的方法。将样品以甲醇为萃取溶剂进行超声萃取,萃取液经过滤后采用LC-MS/MS测定。采用电喷雾离子源,定性离子对为m/z 550.5/298.3、522.5/298.3、522.5/270.3、494.5/270.3;定量离子对为m/z 550.5/298.3、522.5/298.3、494.5/270.3。方法线性范围为0.02～1.0 mg/L,相关系数为0.998 5,方法的定量下限为20 mg/kg,在100～500 mg/kg范围的加标回收率为86%～96%,相对标准偏差为3.2%～5.4%。结果表明,该方法快速、准确、灵敏度高,能满足相关测定要求。An analytical method was established for the determination of distearyl dimethyl ammonium chloride（DSDMAC） in dyeing and finishing textile agents by ultrasound-assisted extraction combined with liquid chromatography - tandem mass spectrometry （ LC - MS/MS）. The sample was extracted with methanol by ultrasound-assisted extraction. The extract was filtered and then detected by LC - MS/MS with electro-spray ionization source. The confirmation ion pairs were m/z 550. 5/298.3, 522.5/298.3, 522.5/270. 3, 494.5/270. 3, and the quantification ion pairs were m/z 550.5/ 298.3, 522.5/298.3, 494.5/270.3. The calibration curve was linear for DSDMAC in the range of 0.02 - 1.0 mg/L with correlation coefficient of 0. 998 5. The limit of quantitation was 20 mg/kg. The recoveries of DSDMAC at the spiked range of 100 - 500 mg/kg were between 86% and 96% , with relative standard deviations （RSDs） of 3.2% - 5.4%. The experimental results indicated that the method was rapid, sensitive and accurate, and could meet the correlative requirements for determination of DSDMAC in dyeing and finishing textile agents.

关 键 词：超声辅助萃取 液相色谱-串联质谱(LC—MS/MS) 染整助剂 二硬脂基二甲基氯化铵 

分 类 号：O657.63[理学—分析化学] TQ423[理学—化学]