NO3 radical, OH radical and O3-initiated secondary aerosol formation from aliphatic amines

Aliphatic amines enter the atmosphere from a variety of sources, and exist in both gas and particle phases in the atmosphere. Similar to ammonia, amines can form inorganic salts through acid–base reactions. However, the atmospheric behavior of amines with atmospheric oxidants (e.g. the nitrate radical (NO3), the hydroxyl radical (OH), O3) is still poorly understood. In this study, chamber experiments were conducted to explore the reaction between three aliphatic amines and HNO3/O3/NO3/OH. Effects of water vapor were also explored by conducting experiments under different relative humidity conditions (RH