The Chemistry of Nitrate Radical (NO3) and Dinitrogen Pentoxide (N2O5) in Beijing

This book systematically describes the instrument setup for the measurement of nitrate radical (NO3) and dinitrogen pentoxide (N2O5), as well as the mixing ratio, chemical behaviors, and atmospheric impacts of NO3 and N2O5 in Beijing, China.

This book systematically describes the instrument setup for the measurement of nitrate radical (NO₃) and dinitrogen pentoxide (N₂O₅), as well as the mixing ratio, chemical behaviors, and atmospheric impacts of NO₃ and N₂O₅ in Beijing, China. It also discusses the instrument design and data analysis method in detail. Based on several field measurements of NO₃ and N₂O₅ in Beijing, it shows the variation in concentration and the budget of NO₃ and N2O5. The N₂O₅ heterogeneous uptake coefficient was determined using various methods, and the relationship between the N₂O₅ uptake coefficient and the particle properties was demonstrated, as well as the impact of NO₃-N₂O₅ chemistry to the atmospheric oxidation and the formation of particulate nitrate. These results increase our understanding of nighttime chemistry and provide insights into the role of NO₃-N₂O₅ chemistry in other polluted regions.