Estuarine dissolved speciation and partitioning of trace metals: a novel approach to study biogeochemical processes

Estuaries are complex systems involving numerous biogeochemical gradients and processes that influence the behavior of trace metals. Lead (Pb), cadmium (Cd), and copper (Cu) speciation and partitioning were studied in the Gironde Estuary (SW France), using a multi-method approach in which data from...

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Bibliographic Details
Published in:Environmental research 2022-05, Vol.208, p.112596-112596, Article 112596
Main Authors: Abdou, M., Tercier-Waeber, M.-L., Dutruch, L., Bossy, C., Pougnet, F., Coynel, A., Bakker, E., Blanc, G., Schäfer, J.
Format: Article
Language:English
Subjects:
Cadmium
Continental interfaces, environment
Copper
Earth Sciences
Environmental Monitoring
Environmental Sciences
Estuaries
Geochemistry
Lead
Metals - analysis
Metals, Heavy - analysis
Potentially bioavailable dissolved fraction
Priority substances
Sciences of the Universe
Suspended particles
Trace Elements - analysis
Water Pollutants, Chemical - analysis
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Summary:Estuaries are complex systems involving numerous biogeochemical gradients and processes that influence the behavior of trace metals. Lead (Pb), cadmium (Cd), and copper (Cu) speciation and partitioning were studied in the Gironde Estuary (SW France), using a multi-method approach in which data from innovative sensors and laboratory-based techniques were combined. For the first time in this system, the so-called dynamic fractions of the target metals (dissolved forms that are potentially bioavailable) were recorded on-board through voltammetry using unique antifouling gel-integrated microelectrode arrays (GIME) incorporated in a submersible sensing probe (TracMetal). Trace metals in the operationally defined dissolved
ISSN:0013-9351
1096-0953
DOI:10.1016/j.envres.2021.112596