uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Simulation of photoreactive transients and of photochemical transformation of organic pollutants in sunlit boreal lakes across 14 degrees of latitude: A photochemical mapping of Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Limnology.ORCID iD: 0000-0001-9212-2555
Show others and affiliations
2018 (English)In: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 129, p. 94-104Article in journal (Refereed) Published
Abstract [en]

Lake water constituents, such as chromophoric dissolved organic matter (CDOM) and nitrate, absorb sunlight which induces an array of photochemical reactions. Although these reactions are a substantial driver of pollutant degradation in lakes they are insufficiently understood, in particular on large scales. Here, we provide for the first time comprehensive photochemical maps covering a large geographic region. Using photochemical kinetics modeling for 1048 lakes across Sweden we simulated the steady-state concentrations of four photoreactive transient species, which are continuously produced and consumed in sunlit lake waters. We then simulated the transient-induced photochemical transformation of organic pollutants, to gain insight into the relevance of the different photoreaction pathways. We found that boreal lakes were often unfavorable environments for photoreactions mediated by hydroxyl radicals ([rad]OH) and carbonate radical anions (CO3−[rad]), while photoreactions mediated by CDOM triplet states (3CDOM*) and, to a lesser extent, singlet oxygen (1O2) were the most prevalent. These conditions promote the photodegradation of phenols, which are used as plastic, medical drug and herbicide precursors. When CDOM concentrations increase, as is currently commonly the case in boreal areas such as Sweden,3CDOM* will also increase, promoting its importance in photochemical pathways even more.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 129, p. 94-104
Keywords [en]
Boreal lakes, Browning, Modeling, Photochemical transients, Photochemistry, Pollutants
National Category
Environmental Sciences Oceanography, Hydrology and Water Resources
Identifiers
URN: urn:nbn:se:uu:diva-336858DOI: 10.1016/j.watres.2017.10.064ISI: 000424716800010PubMedID: 29132125OAI: oai:DiVA.org:uu-336858DiVA, id: diva2:1167285
Funder
Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning, 2009-1350-15339-81Swedish Research Council, 2011-3475-88773-67Knut and Alice Wallenberg Foundation, KAW 2013.0091Available from: 2017-12-18 Created: 2017-12-18 Last updated: 2018-04-11Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedhttps://doi.org/10.1016/j.watres.2017.10.064

Authority records BETA

Koehler, BirgitTranvik, Lars

Search in DiVA

By author/editor
Koehler, BirgitTranvik, Lars
By organisation
Limnology
In the same journal
Water Research
Environmental SciencesOceanography, Hydrology and Water Resources

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 70 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf