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The removal of colloidal lead during estuarine mixing: seasonal variations and importance of iron oxides and humic substances
- Source :
- Marine and Freshwater Research, Marine and Freshwater Research, CSIRO Publishing, 2011, 62 (4), pp.329-341. ⟨10.1071/MF10220⟩
- Publication Year :
- 2011
- Publisher :
- HAL CCSD, 2011.
-
Abstract
- In the present study, seven colloidal fractions of lead (Pb) were analysed along the mixing zone of the Penzé estuary over the Year 2009, with the aim to provide some insight into the mechanism that removes the metal from the 300 kDa) and was removed in the salinity range 0–10 from all of the size fractions where it was significantly found. Because the colloidal fractionation of Pb was strongly linked to that of iron (Fe) and humic substances (HS), the removal of Pb in the mixing area must occur under flocculation of organomineral complexes. A key period corresponding to the first strong autumnal precipitations was also revealed in the present work. At this time of the year, the mobilisation of Pb (and Fe) from catchment soils is enhanced by the mobilisation of HS and the metal is associated with smaller colloids (30–300 kDa).
- Subjects :
- Flocculation
010504 meteorology & atmospheric sciences
Iron oxide
Mineralogy
Fractionation
010501 environmental sciences
Aquatic Science
Biology
Oceanography
01 natural sciences
complex mixtures
Metal
chemistry.chemical_compound
Colloid
colloids
estuarine waters
Ecology, Evolution, Behavior and Systematics
Pb
0105 earth and related environmental sciences
Ecology
humic substances
seasonal variations
Biogeochemistry
Fe
6. Clean water
Salinity
chemistry
visual_art
Environmental chemistry
Soil water
[SDE]Environmental Sciences
visual_art.visual_art_medium
Subjects
Details
- Language :
- English
- ISSN :
- 13231650
- Database :
- OpenAIRE
- Journal :
- Marine and Freshwater Research, Marine and Freshwater Research, CSIRO Publishing, 2011, 62 (4), pp.329-341. ⟨10.1071/MF10220⟩
- Accession number :
- edsair.doi.dedup.....a5a97890ccc367b592220991d1e81496