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HPLC测定啤酒中微量甲醛方法是将甲醛用水蒸馏后用 0 .2 % 2 .4 二硝基苯肼吸收 ,氯仿提取 ,HPLC测定 ,根据Rt定性、峰高定量 .此法效果好 ,灵敏度高 ,准确性高 .
The method for determining trace amount of formaldehyde in beer by HPLC is that the formaldehyde is distilled off with 0.2% of dinitrophenylhydrazine, extracted by chloroform and determined by HPLC, High accuracy.