作者
Xiaochen Tang, Derek Price, Eric Praske, Su Anne Lee, Morgan A Shattuck, Kathleen Purvis-Roberts, Philip J Silva, Akua Asa-Awuku, David R Cocker III
发表日期
2013/6/1
期刊
Atmospheric Environment
卷号
72
页码范围
105-112
出版商
Pergamon
简介
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<0.1% to ∼40%). Results show that all three amines have a high potential to form secondary aerosol in reactions with NO3, and are affected by the presence of water vapor. DEA and BA are capable of forming a significant amount of stable inorganic salt at ppb level concentrations, while TMA tends to form …
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