EPJ Web of Conferences
Volume 1, 2009ERCA 2008 - From the Human Dimensions of Global Environmental Change to the Observation of the Earth from Space
|Page(s)||189 - 197|
|Published online||25 February 2009|
Sources markers in aerosols, oceanic particles and sediments
Laboratoire LOCEAN, IPSL/UPMC/UMR CNRS 7159, 4 place Jussieu, 75252 Paris Cedex 05, France
Corresponding author: email@example.com
This review presents some diagnostic criteria used for identifying and quantifying terrestrial organic matter inputs to the ocean. Coupled to the isotopic composition of total organic carbon, the analysis of stable biomarkers permits to trace higher plant contributions in aerosols, dusts, sedimenting particles and dissolved phase in the water column and ultimately in recent and ancient sediments and soils. Some applications are presented, based on the analysis of n-alkyl compounds by a combination of gas chromatography and mass spectrometry (n-alkanes, n-alkanols, n-alkanoic acids and wax esters). Another approach has been developed using the analysis of macromolecular compounds present in higher plants. Abundances of the phenolic compounds from lignin, benzene carboxylic acids obtained during cupric oxide oxidation, Curie pyrolysis are used to characterise terrestrial organic matter sources and inputs. Finally due to the importance of biomass burning in continent-ocean transfers, biomarkers are presented in the polycyclic aromatic hydrocarbon class and for monosaccharide derivatives from the breakdown of cellulose.
© EDP Sciences, 2009
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