Influence of dissolved organic matter on rare earth elements and yttrium distributions in coastal waters
| Autor: | Filippo Saiano, Angela Cuttitta, Paolo Censi, Loredana Randazzo, S. Mazzola, Pierpaolo Zuddas, Rosalda Punturo, Pietro Arico |
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| Přispěvatelé: | Dipartimento CFTA, Università di Palermo, Istituto per l'Ambiente Marino Costiero (IAMC), Consiglio Nazionale delle Ricerche [Roma] (CNR), PaleoEnvironnements et PaleobioSphere (PEPS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), SAF Department, Univesità di Palermo, Dipartimento di Scienze Geologiche, Universita degli di Catania, PROREPLUS ALIF (lAboratori di testing per dispositivi eLettroacustici, sensorI oceanograFici e metodologie finalizzati al monitoraggio dello stato delle risorse biologiche del mare), CIPE (Italy), Italian National Research Council (CNR), Censi, P, Zuddas, P, Randazzo, LA, Saiano, F, Mazzola, S, Arico', P, Cuttitta, A, Punturo, R |
| Rok vydání: | 2010 |
| Předmět: |
010506 paleontology
Mineralogy rare earth elements Mediterranean 010502 geochemistry & geophysics 01 natural sciences Mediterranean sea Dissolved organic carbon Mediterranean Sea [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology Organic matter 14. Life underwater Scavenging Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences General Environmental Science chemistry.chemical_classification Ecology Rare-earth element Authigenic Particulates REE Ce anomaly Settore GEO/08 - Geochimica E Vulcanologia chemistry 13. Climate action Environmental chemistry General Earth and Planetary Sciences Seawater chlorophyll YREE Ce anomaly Central Mediterranean late Quaternary Palaeoenvironmental reconstruction Geology |
| Zdroj: | Chemistry and Ecology Chemistry and Ecology, Taylor & Francis, 2010, 26 (2), pp.123-135. ⟨10.1080/02757541003627720⟩ |
| ISSN: | 1029-0370 0275-7540 |
| Popis: | International audience; Data collected during this study indicate that dissolved Y and REE (rare earth element) behaviour can be monitored through shale-normalised ratios. Relationships occurring between these ratios suggest that leaching from lithogenic materials is the main source of REE in the studied area. This process involves riverine detrital matter in the inner area of the Gulf of Palermo. Features of shale-normalised patterns and the relationship recognised between dissolved Fe and Y/Ho suggest that REE are released from Fe-rich coatings of atmospheric dust. Observed similarities between dissolved Fe and chlorophyll- content suggest that leaching of Fe-rich atmospheric particulates induces a fertilisation of shallow water layers influencing the dissolved organic content. In turn, the increasing chlorophyll- content causes a progressive decrease in amplitude of the negative Ce anomaly in seawater that is also observed in water in the Central Mediterranean Sea, suggesting that organic matter generally plays a key role in REE behaviour at the solid-liquid interface. Shale-normalised REE features recognised in suspended particulate matter (SPM) indicate the occurrence of three different fractions from lithogenic matter, biogenic carbonates and authigenic components, respectively. The latter is formed during REE scavenging onto the surface of detrital biogenic particles and is mainly recognised in inner gulf waters |
| Databáze: | OpenAIRE |
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