气质联用法测定食品中特丁基对苯二酚

Method for Determination of TBHQ in Foods with GC-MS

建立了气相色谱-质谱检测食品中的特丁基对苯二酚的检测方法。样品经乙酸乙酯提取浓缩后,再经饱和乙腈溶解,正己烷脱脂,以气质联用仪选择离子定性、定量,方法简便、快速、准确、可靠。测定低限0.05mg/kg,回收率90%～102%,相对标准偏差1.10%。

A method was developed for the determination of tertiary butylhydroquinone （TBHQ） in foods with gas chromatograpy-selected mass spectrometry （GC-MS）. TBHQ was extracted and concentrated from samples by ethyl acetate, then dissolved by saturated acetonilrile and cleaned up by n-hexane. TBHQ was thus determined and the content of TBHQ was assayed. The limit of quantitative detction（S/N-） 〉 10 is 0.05 mg/kg and the recovery is in the range of 90%- 102% and the relative standard deviation is 1.10%.