利用气相色谱串级质谱(GC/MS/MS)法定性定量鉴定食品中染料苏丹红一号,建立了离子阱气相色谱-质谱联用仪分析食品中苏丹红一号染料的方法.结果表明,苏丹红一号在0.045-0.90 mg·L-1浓度范围内呈线性关系,相关系数为0.999 0,检测下限为0.004 5 mg·kg-1,回收率在83.1%-103.2%之间.方法具有样品预处理简单、灵敏度高、检出限低于现行国家标准水平,确证能力强等特点,满足食品中苏丹红一号的定性定量监测.

Ion-trap gas chromatography in hyphenation with MS/MS (in series) was applied to the identification and determination of sudan I in foodstuffs.Linear relationship between the peak area and concentration of sudan I was obtained in the range of 0.045-0.90 mg·L-1 (r=0.999 0),with a detection limit of 0.004 5 mg·kg-1.Test for recovery was performed by addition of 0.008 mg·kg-1 of sudan I to samples of chilli oil and chilli sauce,and recoveries in the range 83.1%-103.2% were obtained.The proposed method was proved to have the specific features of simple in sample pre-treatment,high-sensitivity and having a lower detection limit than that required by GB standard,and suitable to be used for analysis of sudan I in foodstuffs.