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Structural confirmation of the sea ice biomarker IP found in Arctic marine sediments

Environmental Chemistry Letters, ISSN: 1610-3661, Vol: 10, Issue: 2, Page: 189-192
2012
  • 17
    Citations
  • 0
    Usage
  • 37
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    17
    • Citation Indexes
      17
  • Captures
    37

Article Description

IP is a highly branched isoprenoid and an organic geochemical biomarker that is produced by some Arctic sea ice diatoms. IP has previously been used in Arctic palaeo sea ice reconstruction studies and as a tracer for studying Arctic food webs. Here, the molecular structure of IP has been confirmed by H and C NMR spectroscopy following large-scale extraction from marine sediments obtained from the Canadian Arctic and purification using a combination of open-column and HPLC chromatographic methods. The structure of IP was consistent between the three different sampling locations and was identical to that found previously for this biomarker following synthesis from a closely related highly branched isoprenoid diene. Since this study represents the first structural characterisation of IP in sediments, future analysis of sedimentary IP for palaeo Arctic sea ice reconstructions can be carried out with much greater confidence. © 2011 Springer-Verlag.

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