The analysis of dimethylsulfide and dimethylsulfoniopropionate in sea ice: Dry-crushing and melting using stable isotope additions

Jacqueline Stefels*, Gauthier Carnat, John W. H. Dacey, Thomas Goossens, J. Theo M. Elzenga, Jean-Louis Tison

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

21 Citations (Scopus)

Abstract

Sea ice is thought to be an important source of the climate-active gas dimethylsulfide (DMS), since extremely high concentrations of its precursor dimethylsulfoniopropionate (DMSP) have been found associated with high algal biomass. Accurate measurements of DMS and associated compounds in sea ice were until now not possible due to difficulties associated with the unavoidable melting process before analysis. Here we present and evaluate two methods to analyze DMS and DMSP in sea-ice cores accurately. The first, describes the dry-crushing method, which has its focus on the volatile compound DMS. A sub-sample of deeply frozen (

Original languageEnglish
Pages (from-to)34-43
Number of pages10
JournalMarine Chemistry
Volume128
DOIs
Publication statusPublished - 20-Jan-2012

Keywords

  • Sea ice
  • Methodology
  • Sulfur compounds
  • DMS
  • DMSP
  • Ice algae
  • Climate
  • REACTION MASS-SPECTROMETRY
  • ALGAL PIGMENTS
  • SOUTHERN-OCEAN
  • MARINE-ALGAE
  • WEDDELL SEA
  • PACK ICE
  • ROSS SEA
  • ANTARCTICA
  • PHYTOPLANKTON

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