Light Absorption of Secondary Organic Aerosol: Composition and Contribution of Nitroaromatic Compounds.

ABSTRACT: Secondary organic aerosol (SOA) can affect the atmospheric radiation balance through absorbing light at shorter visible and UV wavelengths. However, the composition and optical properties of light-absorbing SOA is poorly understood. In this work, SOA filter samples were collected during individual chamber experiments conducted with three biogenic and eight aromatic volatile organic compound (VOC) precursors in the presence of NO_X and H₂O₂. Compared with the SOA generated using the aromatic precursors, biogenic SOA generally exhibits negligible light absorption above 350 nm; the aromatic SOA generated in the presence of NO_X shows stronger light absorption than that generated with H₂O₂. Fifteen nitroaromatic compound (NAC) che

SUBMITTER: Xie M 

PROVIDER: S-EPMC7372712 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature