Reduction of Fe(III) with sulfite in natural waters

F. J. Millero, M. Gonzalez-Davila, J. M. Santana-Casiano

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

Measurements of the rates of reduction of nanomolar levels of Fe(III) with sulfite (without O2) have been determined in NaCl and seawater solutions as a function of temperature (0° to 40°C), pH (2 to 6.8), ionic strength (I = 0.1 to 6 M), and composition (Na+, Mg2+, Ca2+, F-, Cl-, Br-, HCO-3, SO42-). The overall rate constant (k, M-1 min-1) for the reaction, Fe(III) + S(IV) k products, is given by d[Fe(III)]/dt = -k[Fe(III)] [S(IV)]. The reaction was found to be first order with respect to Fe(III) and S(IV). The rate constants as a function of pH increased from a pH = 2 to 4 and decreased at higher pH. -from Authors

Original languageEnglish (US)
Pages (from-to)7235-7244
Number of pages10
JournalJournal of Geophysical Research
Volume100
Issue numberD4
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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    Millero, F. J., Gonzalez-Davila, M., & Santana-Casiano, J. M. (1995). Reduction of Fe(III) with sulfite in natural waters. Journal of Geophysical Research, 100(D4), 7235-7244. https://doi.org/10.1029/94JD03111