Toyoda M, Ogawa S, Tonogai Y, Ito Y, Iwaida M
J Assoc Off Anal Chem. 1980 Sep;63(5):1135-7.
Tertiary-butylhydroquinone (TBHQ) is extracted from foods with ethyl acetate, the solvent is evaporated, the residue is dissolved in n-hexane-ethyl acetate (99 + 1), and the TBHQ is selectively transferred into an aqueous layer (2% sodium chloride) as a separation from food interferences. Finally, TBHQ is reextracted with n-hexane-ethyl acetate (1 + 1), concentrated, and determined by flame ionization gas-liquid chrmoatography. Dried fish, frozen shrimp, vegetable oils, and edible fats were analyzed by the method. More than 85% was recovered when the samples were fortified with 100 ppm TBHQ. Detection limit was 1.0 ppm TBHQ.
叔丁基对苯二酚（TBHQ）用乙酸乙酯从食品中提取，溶剂蒸发后，残渣溶于正己烷 - 乙酸乙酯（99 + 1）中，TBHQ被选择性地转移到水层（2%氯化钠溶液）中，以与食品干扰物分离。最后，用正己烷 - 乙酸乙酯（1 + 1）对TBHQ进行再萃取、浓缩，并通过火焰离子化气液色谱法测定。用该方法对干鱼、冻虾、植物油和食用脂肪进行了分析。当样品中添加100 ppm TBHQ时，回收率超过85%。检测限为1.0 ppm TBHQ。
