A comparison of the equilibrium constants for the dissociation of carbonic acid in seawater media

A. G. Dickson, F. J. Millero

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The published experimental data of Hansson and of Mehrbach et al. have been critically compared after adjustment to a common pH scale based upon total hydrogen ion concentration. No significant systematic differences are found within the overall experimental error of the data. The results have been pooled to yield reliable equations that can be used to estimate pK1 * and pK2 * for seawater media a salinities from 0 to 40 and at temperatures from 2 to 35°C.

Original languageEnglish (US)
Pages (from-to)1733-1743
Number of pages11
JournalDeep Sea Research Part A, Oceanographic Research Papers
Issue number10
StatePublished - Oct 1987


ASJC Scopus subject areas

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

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