Contribution of Organic Nitrates to Organic Aerosol over South Korea during KORUS-AQ.

ABSTRACT: The role of anthropogenic NO_x emissions in secondary organic aerosol (SOA) production is not fully understood but is important for understanding the contribution of emissions to air quality. Here, we examine the role of organic nitrates (RONO₂) in SOA formation over the Korean Peninsula during the Korea-United States Air Quality field study in Spring 2016 as a model for RONO₂ aerosol in cities worldwide. We use aircraft-based measurements of the particle phase and total (gas + particle) RONO₂ to explore RONO₂ phase partitioning. These measurements show that, on average, one-fourth of RONO₂ are in the condensed phase, and we estimate that ≈15% of the organic aerosol (OA) mass can be attributed to RONO₂. Furthermore

SUBMITTER: Kenagy HS 

PROVIDER: S-EPMC8759034 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature