乌鲁木齐市冬季大气复合污染条件对含氮有机物形成过程的影响

针对乌鲁木齐市冬季大气颗粒物中含氮有机物形成过程的问题，本项目拟通过构建大气复合型污染的实验室研究方法，原位、在线监测大气痕量气体在矿尘颗粒物表面的非均相化学反应，以期实现含氮有机物生成过程中摄取系数、反应速率的精确测量。控制该过程的环境氛围和反应条件，揭示一次污染物配比条件和气象因素与反应动力学参数之间的关系，结合外场含氮有机物的监测结果，明晰实际大气环境中含氮有机物的形成机理，本项目的研究成果可为认清乌鲁木齐市大气细颗粒物中含氮有机物的形成机制，改善民众生存的大气环境提供新的数据和线索。

In order to solve the problem of the formation process of nitrogenous organic compounds (NOCs) in winter of Urumqi, this project plans to construct a laboratory research method for the compound pollution of atmospheric particulate matter, monitor kinetics of heterogeneous reaction of atmospheric trace gases with the mineral dust seeds. The precise measurements of kinetic parameters in formation of NOCs, such as uptake coefficient and reaction rate, are achieved. We also control the reaction condition around the particulate matter. In order to reveal the compound pollution conditions conducive to NOCs generation, we establish the correlation between primary pollutant proportions, meteorological factors and reaction process. Combined with the monitoring results of NOCs in the field research, the formation mechanism of NOCs in the atmospheric environment is determined. This project can recognize the NOCs formation mechanism of PM2.5 in Urumqi, and provide new data and clues for improving the atmosphere environment.