摘要
采用脉冲辐解动态吸收光谱研究了·OH自由基诱导N-二异而基磷酰化甲硫氨酸(NDM)水溶液的氧化过程,结果表明·OH主要进攻NDM中硫原子,并形成含硫三电子键NDM_2^+[S],其在480nm处有最大吸收峰,形成和衰变均呈一级反应,推导了反应机理,并与·OH自由基诱导氧化甲硫氨酸水溶液机理进行了比较.
The ·OH radical induced oxidation process of N - Diisopropyloxy -phosphonylmethionine (NDM) in N2O- saturated aqueous solution has been investigated by pulseradiolysis techniques. It was found that ·OH radical attacked the sulfur atom in NDM to producea sulfur - containing three - electronbonded (NDM2+ [S]) radical cation which showed a characteristic absorption peak at 480nm. The formation and decay rate constants of this transient species have been determined and the reaction mechanisms under identical conditions of NDM and Met have been compared.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1997年第7期703-709,共7页
Acta Chimica Sinica
基金
国家自然科学基金资助项目
