溴代烷烃的臭氧消耗潜势值的计算

Calculations of Ozone Depletion Potentials of Brominated Alkanes.

溴代烷烃是破坏臭氧层很重要的一类物质，为了估计臭氧消耗潜势（ＯＤＰ）值，利用流动放电共振荧光技术测定ＣＨ３Ｂｒ和ＣＨ２Ｂｒ２与ＯＨ自由基反应速率常数，计算出它们在大气中的寿命；用半经验的方法，采用最新文献报道的有关数据，计算出ＣＨ３Ｂｒ和ＣＨ２Ｂｒ２的ＯＤＰ值分别为０．３３和０．０７６．并与文献结果进行了比较．

Brominated alkanes are a substances for destroying the ozone layer.In oder to estimate the ozone depletion potential (ODP),author of the paper measured rate constants for the reaction of hydroxyl radicals with CH 3Br and CH 2Br 2 by the discharge flow resonance fluorescence technique.The lifetimes of CH 3Br and CH 2Br 2 in tropospheric atmoshere were calculated.ODP values were calculated using semi experience method according to updated data of literature.The ODP values are 0 33 for CH 3Br and 0 076 for CH 2Br 2.The results were compared with literature yet.