Studies of Vitamin K by Pulse Radiolysis and Laser Photolysis(Ⅱ)——Time-resolved Studies of Oxidation Reactions of VK3 in Aqueous Solution

Chem. J. Chinese Universities ›› 1998, Vol. 19 ›› Issue (11): 1829.

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Studies of Vitamin K by Pulse Radiolysis and Laser Photolysis(Ⅱ)——Time-resolved Studies of Oxidation Reactions of VK₃ in Aqueous Solution

CHEN Jia-Fu¹, CHU Gao-Sheng¹, GE Xue-Wu¹, ZHANG Zhi-Cheng¹, YAO Si-De²

1. Department of Applied Chemistry, University of Science and Technology of China, Hefei,30026;
2. Radiation Chem. Lab, Shanghai Institute of Nuclear Research, Academia Sinica, ShangHai, 201800

Received:1997-10-14 Online:1998-11-24 Published:1998-11-24

Abstract

Abstract: The mechanisms of reactions between OH, SO₄^-· and VK₃ in aqueous solution have been investigated by using pulse radiolytical dynamic absorption spectroscopy. While VK₃ reacts with ^·OHand SO₄^-· respectively, the formation of dehydrogenated radical of VK₃ with characteristic absorption peak round 400 nm has been observed, this is also confirmed by the results of laser photolysis of VK₃ in aqueous solution.

Key words: Vitamin K₃, Hydroxyl radical, Persulfate anion radical, Oxidation reaction

CLC Number:

O643

TrendMD:

CHEN Jia-Fu, CHU Gao-Sheng, GE Xue-Wu, ZHANG Zhi-Cheng, YAO Si-De . Studies of Vitamin K by Pulse Radiolysis and Laser Photolysis(Ⅱ)——Time-resolved Studies of Oxidation Reactions of VK₃ in Aqueous Solution[J]. Chem. J. Chinese Universities, 1998, 19(11): 1829.

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Studies of Vitamin K by Pulse Radiolysis and Laser Photolysis(Ⅱ)——Time-resolved Studies of Oxidation Reactions of VK₃ in Aqueous Solution

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