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Citation: Chen Jia-Fu, Chu Gao-Sheng, Ge Xue-Wu, Zhang Zhi-Cheng, Yao Si-De. Determination of One-Electron Reduction Potential of Vitamin K₁ in Mixed Solvent[J]. Acta Physico-Chimica Sinica, ;1999, 15(11): 1030-1035. doi: 10.3866/PKU.WHXB19991114 shu

Determination of One-Electron Reduction Potential of Vitamin K₁ in Mixed Solvent

1.
Department of Applied Chemistry,University of Science and Technology of China,Hefei 230026

Received Date: 28 January 1999
Available Online: 15 November 1999

The reaction process of VK1 and isopropanol radical has been investigated by using pulse radiolytical technique. It has been found that the reduction states of VK1 exist in two forms under different pH conditions, that are VK1H•(pH < 5.4) and VK1-• (pH > 5.4), their maximum absorption peaks are 370 nm and 390 nm respectively. Selecting MV2+as the refereance, the one electron reduction potential of VK1 in N2 saturated aqueous isopropanol acetone mixed solvent and in N2O saturated water-isopropanol has been determined as -266 and -279mV respectively.
- Vitamin K1,
- One-electron reduction potential,
- Pulse radiolysis
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沈阳化工大学材料科学与工程学院沈阳 110142

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Determination of One-Electron Reduction Potential of Vitamin K1 in Mixed Solvent

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通讯作者: 陈斌, bchen63@163.com

Determination of One-Electron Reduction Potential of Vitamin K₁ in Mixed Solvent