dc.date.accessioned | 2013-03-12T08:43:37Z | |
dc.date.available | 2013-03-12T08:43:37Z | |
dc.date.issued | 2006 | en_US |
dc.date.submitted | 2006-03-22 | en_US |
dc.identifier.citation | Borander, Erik. The Marine Chemistry and Geochemistry of Quaternary amine corrosion inhibitors. Hovedoppgave, University of Oslo, 2006 | en_US |
dc.identifier.uri | http://hdl.handle.net/10852/11637 | |
dc.description.abstract | The behaviour of a monoalkyl quaternary ammonium antioxidant in seawater (0-34 psu) has been studied. A simulating study of quaternary ammonium salt (QAS) in an environmental setting was carried out by use of two different compound compositions: pure QAS (QAS-A), and a mixture of QAS and fatty acid amine dissolved in propanol. The study shows that the presence of a hydrophobic constituent (fatty acid amine) might have an influence in the physical property of the antioxidant in aquatic medium. The QAS-A shows uniform solubility towards seawater of different salinity. The combined material flocculates at approximately 1% V/V in seawater. When filtering off the flocculated matter, the compound show a solubility similar to the QAS-A. The investigated QAS have high affinity towards natural sediment from Vestfjorden, Oslofjorden, Norway, but different adsorbing mechanisms seem to be found when comparing the pure and the combined material. A further adsorption/desorption study of the combined material show that this have an increased affinity towards sediment with organic content (~2% TOC), compared to organic free sediment. When UV-irradiated the combined material show indication of break down by fragmentation rather then mineralization. It was not possible to identify the products from UV break down by UV-, IR- or fluorescence spectroscopy. | nor |
dc.language.iso | nob | en_US |
dc.subject | marinebiologi marinekjemi kvarærnær ammonium ion korrosjon inhibitor miljø saltvann | en_US |
dc.title | The Marine Chemistry and Geochemistry of Quaternary amine corrosion inhibitors | en_US |
dc.type | Master thesis | en_US |
dc.date.updated | 2006-06-30 | en_US |
dc.creator.author | Borander, Erik | en_US |
dc.subject.nsi | VDP::480 | en_US |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Borander, Erik&rft.title=The Marine Chemistry and Geochemistry of Quaternary amine corrosion inhibitors&rft.inst=University of Oslo&rft.date=2006&rft.degree=Hovedoppgave | en_US |
dc.identifier.urn | URN:NBN:no-12444 | en_US |
dc.type.document | Hovedoppgave | en_US |
dc.identifier.duo | 37462 | en_US |
dc.contributor.supervisor | Prof. M.I. Abdullah | en_US |
dc.identifier.bibsys | 06027591x | en_US |