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Analysis of the structure of dissolved marine humic substances and their phytoplanktonic precursors by H and C nuclear magnetic resonance |
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| Authors: | Michael A Wilson Andrew H Gillam Philip J Collin |
| Institution: | 1 Lincoln College, Canterbur, New Zealand 2 Department of Oceanography, University of British Columbia, Vancouver, B.C. V6T 1WS, Canada 3 CSIRO, Division of Fossil Fuels, North Ryde, N.S.W. 2113, Australia |
| Abstract: | The structure of dissolved marine humic material and the intracellular and extracellular material from the diatom Phacodactylum tricornutum has been investigated by 1H- and 13C-NMR spectroscopy. The results show that carbohydrates, highly-branched alkyl chains and to a lesser extent aromatic materials are important contributors to the structure of marine humic substances and aqueous extracts of P. tricornutum. There is a close relationship between the chemical structure of P. tricornutum exudate and dissolved marine humic material. |
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