Dissolved input of manganese to the ocean

aerosol source

Cecile Guieu, R. Duce, R. Arimoto

Research output: Contribution to journalArticle

Abstract

Aerosol particle samples representative of polluted air, dust-laden air, and clean marine air were collected, and exposed to seawater for varying lengths of time and to deionized (Milli-Q) water at various values of pH. The percentage of aerosol Mn dissolved in Milli-Q water increased from 55 to 80% between pH 8 and pH 2 for pollution aerosols. With the mineral aerosol particles, the dissolved Mn increased from 25 to 50% between pH 8 and pH 2. We conclude that the dissolution process for aerosol particles from a remote marine area, is controlled by the background mineral content. The kinetics of Mn dissolution in seawater are rapid for all the samples: a concentration plateau is reached after 10 min or less of exposure. Release of dissolved Mn from polluted aerosols in seawater was approximately twice the value obtained with mineral particles (55 and 30%, respectively). The total dissolved Mn flux from anthropogenic sources in western North Europe is estimated to be 0.3 μmol m-2d-1. -from Authors

Original languageEnglish (US)
JournalJournal of Geophysical Research
Volume99
Issue numberD9
StatePublished - Jan 1 1994

Fingerprint

Manganese
aerosols
Aerosols
manganese
oceans
aerosol
ocean
Seawater
Particles (particulate matter)
Minerals
seawater
minerals
air
dissolving
Dissolution
mineral
Air
dissolution
Water
anthropogenic source

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Aquatic Science
  • Ecology
  • Condensed Matter Physics
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Materials Chemistry
  • Palaeontology

Cite this

Dissolved input of manganese to the ocean : aerosol source. / Guieu, Cecile; Duce, R.; Arimoto, R.

In: Journal of Geophysical Research, Vol. 99, No. D9, 01.01.1994.

Research output: Contribution to journalArticle

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