Photoreduction of iron(III) in marine mineral aerosol solutions

Zhu Xiaorong Zhu, J. M. Prospero, D. L. Savoie, Frank J Millero, R. G. Zika, E. S. Saltzman

Research output: Contribution to journalArticle

104 Citations (Scopus)

Abstract

Only 1% of the total Fe and 7.5% of the soluble Fe was in the Fe(II) form. Photolysis experiments were performed with solutions extracted from aerosol filter samples and with solutions of Fe(III) in acidic sodium chloride. In both systems, Fe(II) concentrations increased rapidly when the solutions were exposed to sunlight and they attained steady state within an hour. However, in all cases Fe(II) is only a minor component even when conditions are favorable for photolysis. Fe(II) formation is hindered at the low pH that is believed to be characteristic of marine aerosol solutions. Solutions with added oxalate yielded greatly increased concentrations of Fe(II). The photoreduction of Fe(III) to Fe(II) did not appear to significantly increase the dissolution of Fe(III) from the dust mineral matrix. -from Authors

Original languageEnglish (US)
Pages (from-to)9039-9046
Number of pages8
JournalJournal of Geophysical Research
Volume98
Issue numberD5
StatePublished - 1993
Externally publishedYes

Fingerprint

Aerosols
photochemical reactions
Minerals
aerosols
Iron
minerals
aerosol
iron
mineral
Photolysis
photolysis
Oxalates
oxalates
sodium chlorides
sunlight
oxalate
sodium chloride
Sodium Chloride
Dust
dissolving

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Xiaorong Zhu, Z., Prospero, J. M., Savoie, D. L., Millero, F. J., Zika, R. G., & Saltzman, E. S. (1993). Photoreduction of iron(III) in marine mineral aerosol solutions. Journal of Geophysical Research, 98(D5), 9039-9046.

Photoreduction of iron(III) in marine mineral aerosol solutions. / Xiaorong Zhu, Zhu; Prospero, J. M.; Savoie, D. L.; Millero, Frank J; Zika, R. G.; Saltzman, E. S.

In: Journal of Geophysical Research, Vol. 98, No. D5, 1993, p. 9039-9046.

Research output: Contribution to journalArticle

Xiaorong Zhu, Z, Prospero, JM, Savoie, DL, Millero, FJ, Zika, RG & Saltzman, ES 1993, 'Photoreduction of iron(III) in marine mineral aerosol solutions', Journal of Geophysical Research, vol. 98, no. D5, pp. 9039-9046.
Xiaorong Zhu Z, Prospero JM, Savoie DL, Millero FJ, Zika RG, Saltzman ES. Photoreduction of iron(III) in marine mineral aerosol solutions. Journal of Geophysical Research. 1993;98(D5):9039-9046.
Xiaorong Zhu, Zhu ; Prospero, J. M. ; Savoie, D. L. ; Millero, Frank J ; Zika, R. G. ; Saltzman, E. S. / Photoreduction of iron(III) in marine mineral aerosol solutions. In: Journal of Geophysical Research. 1993 ; Vol. 98, No. D5. pp. 9039-9046.
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