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目的建立保健食品中邻苯二甲酸二异辛酯(diisooctyl phthalate,DEHP)快速筛查的定性定量分析方法。方法样品经无水乙醇超声提取后,采用气相色谱-质谱联用法在选择离子扫描模式下进行定量检测。结果DEHP在0.01070~10.70μg/mL范围内具有良好的线性关系,相关系数为0.9987,该方法检出限(LOD)为0.02μg/g,定量限(LOQ)为0.07μg/g。加标回收率为73.8%~96.8%;结论该法简便、快速、准确,溶剂用量少,可用于保健食品中DEHP的检测。
Objective To establish a qualitative and quantitative method for rapid screening of diisooctyl phthalate (DEHP) in health food. Methods The samples were extracted with absolute ethanol and quantified by gas chromatography-mass spectrometry in a selective ion scan mode. Results The linear range of DEHP was 0.01070 ~ 10.70μg / mL. The correlation coefficient was 0.9987. The limit of detection (LOD) was 0.02μg / g and the limit of quantification (LOQ) was 0.07μg / g. The spiked recoveries ranged from 73.8% to 96.8%. Conclusion The method was simple, rapid and accurate and could be used in the determination of DEHP in health food.