原位红外光谱法研究大气颗粒物表面非均相反应  

Heterogeneous Reactions on the Surface of Atmospheric Particles by Situ-IR Spectroscopy Study

作　　者：朱玲[1] 曾艺彬 张玉婷 

机构地区：[1]北京石油化工学院环境工程系,北京市大兴区清源北路19号102617 [2]北京市延庆县环保局,北京市延庆县香苑街102号102100

出　　处：《光谱实验室》2013年第6期3360-3365,共6页Chinese Journal of Spectroscopy Laboratory

基　　金：自然科学基金委(21207006)资助项目;北京市属市管高等学校人才强教计划(PHR201107147;PHR201107213;PHR201108365)资助项目

摘　　要：大气污染物之间可能发生协同作用,造成严重的二次污染,产生次生环境问题。本实验通过原位红外光谱分析方法研究气态污染物和碳颗粒物之间的吸附过程,发现大气中CO2和NO极易在颗粒物表面发生吸附;CO2在颗粒物表面达到吸附平衡时间很短,NO的吸附平衡时间较长;CO2和SO2会影响N O在颗粒物表面的吸附,CO2在颗粒物表面的吸附几乎不受NO和SO2的影响。Synergistic effects may occur among atmospheric pollutants,which may ormg about serious secondary pollution and produce secondary environmental problems. In this experiment,in-situ infrared spectroscopy was used to analyze the adsorption process of gaseous pollutants on the surface of carbon particles. The results show that CO2 and NO can be easily adsorbed on particle surface. The adsorption equilibrium time for CO2 on carbon particle surface is shorter than for NO. The adsorption of NO on particles surface is effected by COx and SO2,and the adsorption of CO2 is almost not affected by NO and SO2.

关 键 词：原位红外光谱法 碳颗粒物 气态污染物 非均相反应 吸附 

分 类 号：O657.33[理学—分析化学]