摘要
在CBM-Ⅳ机理中添加了非均相反应机理,运用盒子模型研究了颗粒物表面非均相反应对大气中气态物种及颗粒态物种浓度的影响.结果表明,非均相反应使得NO2、N2O5和NO3浓度最大值分别下降了2%、11%和4%,硝酸盐和硫酸盐最大值分别增加了7%和36%,HONO的浓度则增加了4.6倍.各个非均相反应对物种浓度的作用程度受反应摄取系数大小的影响很大.非均相反应的影响程度与颗粒物质量浓度呈正相关,与颗粒物粒径及稀释系数呈负相关.
By adding heterogeneous reactions to CBM-[V mechanism, box model was used and the impact of heterogeneous reactions on the concentrations of gas-phase species and particulates was explored. The maximum concentrations of NO2, N205, and NO3 decreased by 2%, 11% and 4%, while that of nitrate, sulfate and HONO increased by 7%, 36% and 460%, respectively. The effect of each heterogeneous reaction depended heavily on the uptake coefficients. In addition, it shows that the impact of heterogeneous reactions presented a positive correlation with particle mass concentrations, and a negative correlation with particle size and dilution coefficient.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2008年第9期823-827,共5页
China Environmental Science
基金
国家"973"项目(2005CB422204)
关键词
非均相反应
盒子模式
颗粒物
摄取系数
heterogeneous reactions
box model
particulate
uptake coefficient
