Estimation of hydroxyl radical concentration in a propylene-NOx-dry air system
Estimation of hydroxyl radical concentration in a propylene-NOx-dry air system
复制标题
丙烯-NOx-干燥空气系统中羟基自由基浓度的估算
DOI：
10.1021/es60161a008
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发表时间：
1980
影响因子：
11.4
通讯作者：
M. Okuda
中科院分区：
文献类型：
--
作者：
H. Akimoto;F. Sakamaki;G. Inoue;M. Okuda
OH自由基的最大浓度(OH)/sub max/是根据C/sub 3/H/sub 6/在C/sub 3/H/sub 6/-NO/sub x/-干燥空气（H/sub 2/O小于1 ppm）系统的光氧化中的耗散率来估计的。实验使用体积为 6065 L 的可抽真空且可烘烤的烟雾室进行。在 (C/sub 3/H/sub 6/)/sub 0/ = 0.1 至 0.5 ppM 的实验条件下，获得的 (OH)/sub max/ 值在 (1 至 6) x 10/sup 6/ 分子 cm/sup -3/ 范围内，误差为 ± 30%，并且(NO/sub x/)/sub 0/ = 0.04-0.29 ppm，k/sub 1/ = 0.13-0.37 min/sup -1/。发现(OH)/sub max/与光强度成正比。还表明，当 (C/sub 3/H/sub 6/)/sub 0//(NO/sub x/)/sub 0/约 1 时，(OH)/sub max/ 独立于 (C/sub 3/H/sub 6/)/sub 0/。大约大于或等于 2 3，得到(OH)/sub max/对(NO/sub x/)/sub 0/的依赖性。
The maximum concentration of OH radical, (OH)/sub max/, was estimated from the dissipation rate of C/sub 3/H/sub 6/ in the photooxidation of a C/sub 3/H/sub 6/-NO/sub x/-dry air (H/sub 2/O less than 1 ppM) system. The experiments were performed using an evacuable and bakable smog chamber with a volume of 6065 L. The (OH)/sub max/ values obtained were in the range of (1 to 6) x 10/sup 6/ molecule cm/sup -3/ with an error of +- 30% under the experimental conditions of (C/sub 3/H/sub 6/)/sub 0/ = 0.1 to 0.5 ppM and (NO/sub x/)/sub 0/ = 0.04-0.29 ppM, and k/sub 1/ = 0.13-0.37 min/sup -1/. The (OH)/sub max/ was found to be proportional to light intensity. It was also shown that (OH)/sub max/ was independent of (C/sub 3/H/sub 6/)/sub 0/ when (C/sub 3/H/sub 6/)/sub 0//(NO/sub x/)/sub 0/ approx. greater than or equal to 2 approx. 3, and the dependence of (OH)/sub max/ on (NO/sub x/)/sub 0/ was obtained.