Connecting the oxidation of soot to its redox cycling abilities

• DOI: 10.1038/ncomms7812
• Publication Date: 2015-04-15T12:14:03Z
• Authors: María Antiñolo; Megan D. Willis; Shouming Zhou; Jonathan P.D. Abbatt
• Keywords: Particle (ecology); Cycling; Atmospheric chemistry

Abstract Although it is known that soot particles are emitted in large quantities to the atmosphere, our understanding of their environmental effects limited by knowledge how composition subsequently altered through atmospheric processing. Here we present an on-line mass spectrometric study changing chemical hydrocarbon as they oxidized gas-phase ozone, and show surface-mediated loss rates adsorbed polycyclic aromatic hydrocarbons directly connected a significant increase particle redox cycling abilities. With implicated oxidative stress mechanism arises after inhalation particles, this work draws quantitative connection between detailed heterogeneous chemistry occurring on potential toxic attributable aerosol.