Articles | Volume 22, issue 14
https://doi.org/10.5194/acp-22-9461-2022
https://doi.org/10.5194/acp-22-9461-2022
Research article
 | 
22 Jul 2022
Research article |  | 22 Jul 2022

Iron (Fe) speciation in size-fractionated aerosol particles in the Pacific Ocean: The role of organic complexation of Fe with humic-like substances in controlling Fe solubility

Kohei Sakata, Minako Kurisu, Yasuo Takeichi, Aya Sakaguchi, Hiroshi Tanimoto, Yusuke Tamenori, Atsushi Matsuki, and Yoshio Takahashi

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Cited articles

Abualhaija, M. M., Whitby, H., and van den Berg, C. M. G.: Competition between copper and iron for humic ligands in estuarine waters, Mar. Chem., 172, 46–56, https://doi.org/10.1016/j.marchem.2015.03.010, 2015. 
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Amrani, A., Said-Ahmad, W., Shaked, Y., and Kiene, R. P.: Sulfur isotope homogeneity of oceanic DMSP and DMS, P. Natl. Acad. Sci. USA, 110, 18413–18418, https://doi.org/10.1073/pnas.1312956110, 2013. 
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Short summary
Iron (Fe) species in size-fractionated aerosol particles collected in the western Pacific Ocean were determined to identify factors controlling fractional Fe solubility. We found that labile Fe was mainly present in submicron aerosol particles, and the Fe species were ferric organic complexes combined with humic-like substances (Fe(III)-HULIS). The Fe(III)-HULIS was formed by atmospheric processes. Thus, atmospheric processes play a significant role in controlling Fe solubility.
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