| 水溶液中产生(O_2)~·的机理及其自旋捕获研究 |
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| 引用本文： | 王玉琨,陈明.水溶液中产生(O_2)~·的机理及其自旋捕获研究[J].西安石油大学学报(自然科学版),1997(1). |
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| 作者姓名： | 王玉琨 陈明 |
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| 作者单位： | 西安石油学院(王玉琨)，黔南高等医学专科学校(陈明) |
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| 摘 要： | 研究了氧饱和碱性连二亚硫酸钠（Ｎａ２Ｓ２Ｏ４）水溶液中超氧负离子基（Ｏ２－）产生的机理，ＥＳＲ和ＵＶ光谱结果表明该反应可能经历Ｏ２与ＳＯ２－间单电子转移；体系中Ｏ２－处于产生－消失的动态过程，其稳定性依赖于溶液ｐＨ值；一次充氧饱和条件下，［Ｏ２－］应不超过１０－３ｍｏｌＬ－１；连续充氧条件下Ｏ２－的累积量与ＳＯ２－的累积量有关
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| 关 键 词： | 水溶液，氧，机理／［超氧负离子基.自旋捕获］ |
Mechanismic Study on the Generation of O -· 2 in Oxygen Saturated Aqueous Solution of Na 2S 2O 4 |
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| Wang Yu,kun et al.Mechanismic Study on the Generation of O -· 2 in Oxygen Saturated Aqueous Solution of Na 2S 2O 4[J].Journal of Xian Shiyou University,1997(1). |
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| Authors: | Wang Yu kun |
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| Abstract: | The mechanism of generating superoxide radicals(O -· 2)from oxygen in alkaline aqueous solution of Na 2S 2O 4 was studied.The spetrtrum determination of ESR and UV implied a single electron transfer from SO -· 2 anion radicals to molecular oxygen.It was found that the stability of O -· 2 in aqueous solution of Na 2S 2O 4 depends on PH. It was estimated that(O -· 2) was less than 10 -3 mol·dm -3 in the solution oxygenated once,and the total amount of O -· 2 generated in the solution oxygenated continuously depends on that of SO -· 2 in the same solution.The dynamics of both generation and decay of O -· 2 in the system is also discussed. |
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| Keywords: | water solution oxygen mechanism/[superoxide radicals self spinning capture] |
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