分散固相萃取-增强型去除脂质-LC-MS/MS法测定衣物洗涤剂中的马来酸二乙酯
朱虹,黄让明
广东省汕头市质量计量监督检测所,广东汕头 515041
Determination of diethyl maleate in laundry detergent by dispersed solid phase extraction-enhanced lipid removal-liquid chromatography-tandem mass spectrometry
朱虹,黄让明
Guangdong Shantou Institute of Quality and Metrology Supervision Testing, Shantou 515041, China
摘要:建立以分散固相萃取-增强型去除脂质(QuEChERS EMR-Lipid)为前处理方法,液相色谱-串联质谱法测定衣物洗涤剂中马来酸二乙酯含量的方法。样品在60℃水浴中经乙腈超声提取,以QuEChERS EMR-Lipid净化管快速净化,用液相色谱-串联质谱法分析,色谱峰外标法定量。马来酸二乙酯的质量浓度在0.5~100.0 μg/L范围内与色谱峰面积成良好的线性关系,线性相关系数均大于0.9996。样品加标回收率为92.7%~98.2%。对样品进行6次重复测定,测定结果的相对标准偏差为1.2%~4.6%。该方法前处理简单、快捷,灵敏度高,定性定量准确,可用于衣物洗涤剂中马来酸二乙酯含量的快速检测。
Abstract:The method with dispersed solid phase extraction-enhanced lipid removal(QuEChERS EMR-Lipid) method pretreament for the determination of diethyl maleate in laundry detergent by liquid chromatography-tandem mass spectrometry(LC-MS/MS) was established. Sample was ultrasonic extracted in 60℃ by acetonitrile, and purified by QuEChERS EMR-Lipid purification pipe, then detected by LC-MS/MS with external standard method for quantification. The mass concentration of diethyl maleate in the range of 0.5-100.0 μg/L had good linear relationship with chromatographic peak area, and the linear correlation coefficients were all more than 0.9996. The recovery was 92.7%-98.2%. The relative standard deviation of determination results was 1.2%-4.6%(n=6). The method is simple, rapid, sensitive and accurate in both quantitation and qualitation, which is suitable for the routine determination of diethyl maleate in laundry detergent.
关键词:分散萃取;脂质去除;液相色谱-串联质谱;马来酸二乙酯;衣物洗涤剂;基质效应
Keywords:disperse extraction; lipid removal; liquid chromatography-tandem mass spectrometry; diethyl maleate; laundry detergent; matrix effect
本文引用格式:
朱虹,黄让明. 分散固相萃取-增强型去除脂质-LC-MS/MS法测定衣物洗涤剂中的马来酸二乙酯[J].化学分析计量,2020,29(3):76-80.
ZHU H,HUANG R M. Determination of diethyl maleate in laundry detergent by dispersed solid phase extraction-enhanced lipid removal-liquid chromatography-tandem mass spectrometry[J]. Chemical analysis and meterage,2020,29(3):76-80.
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