DIN EN 12823-1:2014 食品. 用高性能液相色谱法对维生素A含量的测定. 第1部分: 全-E-黄醇和13-Z-黄醇的测定; 德文版本EN 12823-1-2014
Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 1: Measurement of all-E-retinol and 13-Z-retinol; German version EN 12823-1:2014