Study of nitrate radical (NO3) reactions with carbonyls and acids in aqueous solution as a function of temperature
Study of nitrate radical (NO3) reactions with carbonyls and acids in aqueous solution as a function of temperature
复制标题
DOI：
10.1039/b613956f
复制
发表时间：
2007-01-01
影响因子：
3.3
通讯作者：
Herrmann, H.
中科院分区：
文献类型：
--
作者：
de Semainville, Ph. Gaillard;Hoffmann, D.;Herrmann, H.
利用激光光解实验研究了硝酸根对四种羰基化合物和三种羧酸的反应性。所有的动力学测量作为温度的函数在278 K至318 K的范围内进行。此外，酸碱平衡对三种酸的反应活性的影响进行了研究，通过测量的活化参数的解离和未解离的酸在pH = 6和pH = 0.5，分别。获得了以下Arabius表达式：[图形]整个研究中所述的误差是95%置信区间的统计学误差。所获得的结果的对流层氧化过程的理解的重要性进行了讨论。从这项工作中产生的动力学与其他大气自由基的结果进行了比较。
Using laser photolysis experiments, the reactivity of the nitrate radical towards four carbonyl compounds and three carboxylic acids was studied. All kinetics measurements were carried out as a function of the temperature in the range from 278 K to 318 K. Furthermore, the effect of the acid-base equilibrium on the reactivity of the three acids was studied by measuring the activation parameters of the dissociated and undissociated acids at pH = 6 and pH = 0.5, respectively. The following Arrhenius expressions were obtained:[GRAPHICS]Errors stated throughout this study are statistical errors for a confidence interval of 95%. The importance of the obtained results for the understanding of the tropospheric oxidation processes is discussed. The kinetics resulting from this work are compared with results for other atmospheric radicals.