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
果汁和蔬菜汁.果汁果肉中稳定碳同位素比值(<(hoch)13>C/<(hoch)12>C)的测定.同位素比值质谱法;德文版ENV 13070:1998