本文已被:浏览 1532次 下载 1138次
投稿时间:2017-01-20
投稿时间:2017-01-20
中文摘要: 建立一种超高效液相色谱-三重四级杆串联质谱法同时测定凉茶饮料中5种有机酸和黄酮类化合物的方法。样品经高速离心,甲醇稀释后,经 BEH C18(100 mm×2.1 mm,1.7 μm)色谱柱分离,乙腈-0.1%甲酸水(体积分数)梯度洗脱,串联质谱电喷雾负离子扫描,多反应监测(MRM)模式检测。5种目标物的方法检出限在0.2 mg/L~0.5 mg/L,在0.02 mg/L~0.5 mg/L浓度范围内,线性相关系数均大于0.999 0。添加水平为1.0 mg/L~40 mg/L时,平均回收率为86.3%~102%;相对标准偏差(RSD,n=6)为2.4%~8.7%。
中文关键词: 凉茶 有机酸 黄酮类化合物 超高效液相色谱-串联质谱(UPLC-MS/MS)
Abstract:A method for quantitative analysis of 5 kinds of organic acid and flavonoid compounds in herbal tea by ultra high performance liquid chromatography tandem mass spectrometry(UPLC-MS/MS)was developed.Samples were centrifuged,diluted with methanol,and separated on BEH C18(100 mm×2.1 mm,1.7 μm)column with acetonitrile-0.1%formic acid solution as mobile phase by gradient elution.Quantitative analysis was performed by a triple quadrupole MS system with negative electrospray ionization(ESI-)operated under multiple reaction monitoring(MRM)mode.The method showed a good linearity with correlation coefficients(r)larger than 0.999 0 at the concentration of 0.02 mg/L-0.5 mg/L.The limits of detection(LOD)of the method ranged 0.2 mg/L-0.5 mg/L.At the spiked level of 1.0 mg/L-40 mg/L,the average recoveries presented 86.3%-102%,with the relative standard deviation(RSD,n=6)values varied between 2.4%-8.7%.
keywords: herbal tea organic acid flavonoid ultra high performance liquid chromatography tandem mass spectrometry(UPLC-MS/MS)
文章编号:201721025 中图分类号: 文献标志码:
基金项目:广东省质监局科技计划项目(2015CZ13);广州市质监局科技计划项目(2015kj01)
引用文本: