摘要
采用GC-MS/MS技术对豆芽中18种邻苯二甲酸酯类(PAEs)进行了分析。采用正己烷萃取、PSA+MgSO4纯化、GC-MS/MS多反应多步监控模型,并采用外标法进行定量分析。18种PAEs在质量浓度0.02-1.0mg/L呈现良好线性关系,R均大于0.999,基质加标回收率为86.4%-105.7%,相对标准偏差(RSD)为1.5%-5.6%,方法定量限为10μg/kg。本实验的优势是:简便,快捷;可靠性高;通过串联质谱仪,可以大大降低底物的干扰,消除伪正的影响,是一类豆芽中邻苯二甲酸酯类的检测与鉴别的新技术。
Eighteen phthalates(PAEs)in bean sprouts were analyzed by GC-MS/MS.Using n-hexane extraction,PSA+MgSO4 purification,GC-MS/MS multi-reaction multi-step monitoring model,and using external standard method for quantitative analysis.The 18 PAEs showed a good linear relationship at the mass concentration of 0.02-1.0 mg/L,the R was greater than 0.999,the recovery rate of the matrix spiked was 86.4%-105.7%,the relative standard deviation(RSD)was 1.5%-5.6%,the method limit of quantification is 10μg/kg.The advantages of this experiment are:simple and fast;high reliability;through the tandem mass spectrometer,the interference of the substrate can be greatly reduced,and the effect of false positive can be eliminated.Technology.
作者
赵舒景
Zhao Shujing(Shanghai Chongming Institutes for Food and Drμg Contro,Shanghai 202150,China)
出处
《现代科学仪器》
2022年第2期70-75,共6页
Modern Scientific Instruments
