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Lead and Copper Speciation in Swedish Lakes and Rivers: Iron and Organic Matter as Potential Particulate/Colloidal Carriers
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Environmental Geochemistry and Ecotechnology.
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Environmental Geochemistry and Ecotechnology.ORCID iD: 0000-0001-8771-7941
Stockholms Universitet, ITM.
SGI.
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2011 (English)In: 11th International Conference on the Biogeochemistry of Trace elements / [ed] Kirk Scheckel, 2011Conference paper, Published paper (Refereed)
Abstract [en]

It is important to monitor the speciation of the potentially toxic metals lead and copper in surface waters. The speciation can be influenced by factors such as adsorption to iron (hydr)oxides and complexation to organic matter. The aim of this study is to explore the speciation of lead and copper in soft-water lakes and rivers in boreal forests, and investigate what kind of potential factors govern the speciation. Methods included 0.45 µm in-line pre-filtration, 1 kDa tangential flow ultrafiltration and geochemical modelling using the Visual MINTEQ program in two boreal lakes, compared with measured and modelled values of 0.45 syringe pre-filtered metals concentrations performed in Swedish lakes and rivers in a larger dataset. Preliminary results indicate that particulate iron can adsorb Pb. On the contrary, Cu in particulate form did not usually appear together with iron particles. Instead, copper was present more in the smaller size fractions and was possibly associated with organic matter.

Place, publisher, year, edition, pages
2011.
Keyword [en]
Geochemical modelling, size fractionation, surface water, trace metals
National Category
Geochemistry
Identifiers
URN: urn:nbn:se:kth:diva-85957OAI: oai:DiVA.org:kth-85957DiVA: diva2:500285
Conference
11th International Conference on the Biogeochemistry of Trace elements, Florens, Italien, 3-7 juli 2011
Funder
Swedish Research Council, 2007-4468
Note
QC 20120215Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-02-15Bibliographically approved

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Gustafsson, Jon Petter

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CiteExportLink to record
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