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投稿时间:2019-02-25
投稿时间:2019-02-25
中文摘要: 建立高效液相色谱-串联质谱法(high performance liquid chromatography-tandem mass spectrometry,HPLC-MS/MS)同时测定酒中6 种对羟基苯甲酸酯类防腐剂的分析方法。试样用乙酸乙酯提取,经Poroshell 120 EC-C18 色谱柱(2.1 mm×75 mm,2.7 μm)进行分离,在电喷雾电离(electrospray ionization source,ESI)源负离子模式下,进行多反应监测(multiple reaction monitoring,MRM)。6 种对羟基苯甲酸酯在5 ng/mL~2 000 ng/mL 的浓度范围内线性关系良好,相关系数r2 >0.999,在低、中、高3 个加标浓度水平下的平均回收率为79.1%~107.5%,相对标准偏差(relative standard deviation,RSD)为 1.1 %~9.1 %(n=7)。方法检出限(limit of detection,LOD)为 0.8 μg/kg~1.0 μg/kg,定量限(limits of quantitation,LOQ)为 3.1 μg/kg ~3.6 μg/kg。
中文关键词: 酒 高效液相色谱-串联质谱 防腐剂 对羟基苯甲酸酯 检测
Abstract:A method was developed for the simultaneous determination of 6 parabens in wine by high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).The samples were extracted by ethyl acetate,separated on a Poroshell 120 EC-C18 column (2.1mm ×75 mm,2.7 μm),and determined with negative ion mode of electrospray ionization (ESI)under multiple reaction monitoring (MRM)mode.The calibration curves of 6 parabens were linear in the range of 5 ng/mL-2 000 ng/mL with good correlation coefficients (r2 >0.999).The average recoveries at the three different spiked concentrations were 79.1.%-107.5 %with relative standard deviations(RSDs,n=7)of 1.1%-9.1%.The limits of detection and quantitation of the method were 0.8 μg/kg-1.0 μg/kg and 3.1 μg/kg-3.6 μg/kg,respectively.
keywords: wine high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) preservative parabens determination
文章编号:201915024 中图分类号: 文献标志码:
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