用电子捕获气液色谱法快速测定食用油中的丁基羟基茴香醚、特丁基对苯二酚和没食子酸丙酯。
Rapid determination of butylated hydroxyanisole, tert- butylhydroquinone, and propyl gallate in edible oils by electron capture gas-liquid chromatography.
作者信息
Page B D, Kennedy B P
出版信息
J Assoc Off Anal Chem. 1976 Nov;59(6):1208-12.
A rapid method is described for the determination of 2- and 3-tert-butyl-4-hydroxyanisole (2- and 3-BHA), tert-butylhydroquinone (TBHQ), and propyl gallate (PG) as their heptafluorobutyrates in edible oils. A solution of the oil in ether-benzene is treated with heptafluorobutyric anhydride (HFBA) in the presence of trimethylamine as catalyst. Excess HFBA is destroyed and a suitably diluted aliquot is analyzed by electron capture gas-liquid chromatography. An internal standard is added before derivatization to aid quantitation and identification of the antioxidants. Average recoveries from an oil spiked at 1, 5, 5, and 5 ppm TBHQ, 2-BHA, 3-BHA, and PG were 110, 105, 106, and 102%, respectively. At these low levels, however, some late-eluting peaks interfered. Butylated hydroxytoluene is not determined by this method.
本文描述了一种快速测定食用油中2-叔丁基对苯二酚（2-BHA）、3-叔丁基对苯二酚（3-BHA）、叔丁基对苯二酚（TBHQ）和没食子酸丙酯（PG）的七氟丁酸酯的方法。将油的乙醚-苯溶液在三甲胺作为催化剂存在的情况下用七氟丁酸酐（HFBA）处理。过量的HFBA被破坏，然后对适当稀释的等分试样进行电子捕获气液色谱分析。在衍生化之前加入内标以帮助对抗氧化剂进行定量和鉴定。在1、5、5和5 ppm的TBHQ、2-BHA、3-BHA和PG加标油中的平均回收率分别为110%、105%、106%和102%。然而，在这些低水平下，一些较晚洗脱的峰产生了干扰。该方法不能测定丁基化羟基甲苯。
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