Articles | Volume 20, issue 3
Atmos. Chem. Phys., 20, 1849–1860, 2020
https://doi.org/10.5194/acp-20-1849-2020
Atmos. Chem. Phys., 20, 1849–1860, 2020
https://doi.org/10.5194/acp-20-1849-2020

Research article 17 Feb 2020

Research article | 17 Feb 2020

Water-soluble iron emitted from vehicle exhaust is linked to primary speciated organic compounds

Joseph R. Salazar et al.

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Latest update: 17 May 2021
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Short summary
The solubility of atmospheric iron is important in human health and environmental chemistry. To understand the origin of water-soluble iron in urban areas, tailpipe emissions were collected from 32 low-emitting vehicles, from which iron solubility averaged 30 % (0–82 %), more than 10 times the average in the Earth's crust. Water-soluble iron was independent of almost all exhaust components and of the iron phase in the particles but was correlated with specific exhaust-derived organic compounds.
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