摘要
采用QuEChERS-气相色谱/三重四极杆质谱(GC/MS/MS)同时测定饮料中17种邻苯二甲酸酯类塑化剂。样品经正己烷提取,基质分散固相萃取净化,采用气相色谱-质谱/质谱法测定,外标法定量。17种邻苯二甲酸酯在各自的线性范围内(5μg/L^1 000μg/L)线性关系良好,线性相关系数在0.99以上,添加10、50和200μg/kg 3个不同浓度水平,含乳饮料中17种邻苯二甲酸酯的平均回收率在80.9%~108.7%,相对标准偏差在0.2%~14.2%,果汁饮料中17种邻苯二甲酸酯的平均回收率在81.4%~110.2%,相对标准偏差在1.3%~13.0%,检出限和定量下限分别为1.5μg/kg^3.0μg/kg和5.0μg/kg^10.0μg/kg。该方法灵敏度高、重现性好、结果准确可靠,适合饮料中邻苯二甲酸酯类塑化剂的检测。
A method was developed for determination of 17 phthalate esters residues in drinks using QuEChERS and gas chromatography-tandem mass spectrometry （GC/MS/MS）. The samples were extracted with n-hexane and cleaned up with dispersive-solid phase extraction. The extracts were determined by GC/MS/MS using exter-nal standard method. The linearity of the method was good between 5μg/L and 1000μg/L. In milk beverage, the mean recoveries at the three spiked levels of 10, 50, 200μg/kg were 80.9%-108.7%, the relative stan-dard deviation（RSD） were 0.2%-14.2%. In fruit drink, the mean recoveries at the three spiked levels of 10, 50, 200μg/kg were 81.4%-110.2%, the relative standard deviation （RSD） were 1.3%-13.0%. The detec-tion limits and quantitation limits were 1.5μg/kg-3.0μg/kg and 5.0μg/kg-10.0μg/kg respectively. The sim-plicity, sensitivity and good precision of the method made it be well suitable for determination of phthalate esters residues in drinks.
出处
《食品研究与开发》
CAS
北大核心
2016年第10期120-123,共4页
Food Research and Development
基金
浙江省质量技术监督系统科研计划资助(20150204)
