An innovative pretreatment method for 6 kinds of azo dyes, such as Sudan I-IV, Sudan 7B, Para red, in chilli oil based on homemade macroporous resin solid-phase extraction(SPE) cartridge was established. The chilli oil samples were diluted by n-hexane and purified by a self-made macroporous resin cartridge, de-termined by high performance liquid chromatography (HPLC) coupled with diode array detector (DAD). The homemade SPE cartridge simplified the preparation procedure of samples and could be reused by regeneration steps. Results showed that the recoveries of 6 azo dyes added to the chilli products had a good linear in the rang from 0.05μg/mL-1.0 μg/mL. The correlation coefficients were more than 0.9998 for all experimental batches. Under three spiking levels, the recovery rates of intra-day and inter-day were ranged from 90.9%to 104.3%, and the relative standard deviations(RSDs) were lower than 3.7%.%建立一种基于大孔吸附树脂柱对辣椒油中苏丹红I-IV、 苏丹红7B和对位红等6种偶氮染料进行的前处理方法.辣椒油样品经正己烷稀释,用自制大孔吸附树脂柱净化,用高效液相色谱-二极管阵列检测器检测,自制固相萃取柱经再生过程可重复使用.结果显示,6种染料在0.05μg/mL~1.0μg/mL浓度范围内线性关系良好,相关系数高于0.9998,在3个加标浓度下,日内和日间的加标回收率在90.9%~104.3%之间,相对标准偏差(RSD)小于3.7%.
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