Articles | Volume 19, issue 1
Atmos. Chem. Phys., 19, 315–325, 2019
https://doi.org/10.5194/acp-19-315-2019
Atmos. Chem. Phys., 19, 315–325, 2019
https://doi.org/10.5194/acp-19-315-2019
Research article
09 Jan 2019
Research article | 09 Jan 2019

Diel variation in mercury stable isotope ratios records photoreduction of PM2.5-bound mercury

Qiang Huang et al.

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Latest update: 01 Dec 2022
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Short summary
Although the specific reactions and mechanisms in fine aerosols could not be explicitly determined from this field study, our results provide isotopic evidence that local daily photochemical reduction of divalent Hg is of critical importance to the fate of PM2.5-Hg in urban atmospheres and that, in addition to variation in sources, photochemical reduction appears to be an important process that affects both the particle mass-specific abundance and isotopic composition of PM2.5-Hg.
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