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氧自旋探针方法是最近发展起来的一种近代生物物理实验技术,原仅用来观测生物细胞的氧代谢过程。本工作则首次利用该方法对微量样品的化学反应进行动力学描述。我们以氮氧自由基3-Carbamoyl-2,2,5,5-tetramethyl-3-pyrrolin-1-yloxy(CTPO)为探针,利用其特征的ESR波谱参数与溶液中氧浓度有关的性质对没食子酸丙脂(Propyl gallata,PG)的半醌自由基在碱性介质中自动氧化过程作了动力学研究,该方法的建立为测定微量物质化学
Oxygen spin probe method is a recent development of modern biophysical experimental techniques, the original only used to observe the biological cells of the oxygen metabolism. For the first time, this method is used to describe the chemical reaction of trace samples. We used the nitroxide radical 3-Carbamoyl-2,2,5,5-tetramethyl-3-pyrrolin-1-yloxy (CTPO) as a probe to characterize the relationship between the ESR spectral parameters and the oxygen concentration in solution The kinetics of the auto-oxidation of semiquinone free radicals of Propyl gallata (PG) in alkaline medium was investigated. The method was established for the determination of trace substance chemistry