高NOx条件下非甲烷烃体积分数的变化对O3生成量的影响

Effects of Changes in the Concentration of Nonmethane Hydrocarbon (NMHC) at High NOx Content on Amount of Ozone Formation

摘要: 利用LLA-C光化学反应机制，在NOx保持高值不变时，模拟分布范围很广的8种初始NMHC/NOx (10-9／10-9) (1.0、3.0、7.1、14.3、28.6、57.2、100.0、200.0)条件下臭氧体积分数的变化。模拟结果表明，当NMHC／NOx≥15.0时，臭氧生成量对NMHC的改变不大敏感而主要依赖于NOx的大小。但是，当非甲烷烃与氮氧化物的比率较低(<7.0)时，臭氧生成量紧密地依赖于非甲烷烃体积分数。进一步的验证工作还有待于加强。

Abstract: Using the LLA-C mechanism, we have modeled changes in the O3 concentration under a wide variety of eight initial reactant conditions of NMHC/NOx = 1.0, 3.0, 7.1, 14.3, 28.6, 57.2, 100.0, 200.0 at high NOx concentrations. Simulations indicate that the amount of O3 formation is not very sensitive to changes of the NMHC distribution but mainly dependent on the NOx concentration when the NMHC/NOx is greater than or equal to 15.0. But at low nonmethane hydrocarbon-to-NOx ratios (<7.0) the predicted O3 concentration strongly depends on the amount of NMHC in a mix. This is a first exploration and much work on validation is needed.