DIN V ENV 13070-1998 果汁和蔬菜汁.水果汁中果肉里面稳定碳同位素比例(<(hoch)13>C/<(hoch)12>C)的测定.使用同位素比例-质谱测量的方法
Fruit and vegetable juices - Determination of stable carbon isotope ratio (<(hoch)13>C/<(hoch)12>C) in the pulp of fruits juices - Method using isotope ratio mass spectrometry; German version ENV 13070:1998
The document specifies a method for the comparison of <(hoch)13>C/<(hoch)12>C ratio of pulpe and sugars in citrus and pineapple juices. The method is carried out to determine authenticity of citrus and pineapple juices.