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作者介绍的这种测定尿中抗坏血酸的简易快速比色法,其原理是基于高铁能与EDTA形成稳定的[Fe(Ⅲ)-EDTA]-络合物,抗坏血酸能使Fe(Ⅲ)还原形成[Fe(Ⅱ)-EDTA]~2络合物,此负二价络合
The simple and rapid colorimetric method for the determination of ascorbic acid in urine introduced by the author is based on the fact that high-speed rail can form stable [Fe (III) -EDTA] -complexes with EDTA and that ascorbic acid can reduce Fe (III) to form [ Fe (II) -EDTA] ~ 2 complex, which is negative divalent complex