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Selective Adsorptio...
Selective Adsorption of Terrestrial Dissolved Organic Matter to Inorganic Surfaces Along a Boreal Inland Water Continuum
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- Groeneveld, Marloes M. (författare)
- Uppsala universitet,Limnologi
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- Catalan, Nuria (författare)
- Catalan Inst Water Res KCRA, Girona, Spain.
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- Attermeyer, Katrin (författare)
- Uppsala universitet,Limnologi,WasserCluster Lunz GmbH, Lunz Am See, Austria.
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- Hawkes, Jeffrey A. (författare)
- Uppsala universitet,Analytisk kemi
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- Einarsdóttir, Karólina (författare)
- Uppsala universitet,Limnologi
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- Kothawala, Dolly (författare)
- Uppsala universitet,Limnologi
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- Bergquist, Jonas (författare)
- Uppsala universitet,Analytisk kemi
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- Tranvik, Lars (författare)
- Uppsala universitet,Limnologi
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(creator_code:org_t)
- 2020
- 2020
- Engelska.
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Ingår i: Journal of Geophysical Research - Biogeosciences. - 2169-8953 .- 2169-8961. ; 125:3
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://uu.diva-port...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Different processes contribute to the loss or transformation of dissolved organic matter (DOM) and change DOM concentration and composition systematically along the inland water continuum. Substantial efforts have been made to estimate the importance of microbial and photochemical degradation for DOM concentration and composition and, to some extent, also DOM losses by flocculation, whereas the significance of DOM adsorption to inorganic surfaces has received less attention. Hence, knowledge on the possible extent of adsorption, its effect on DOM loads and composition and on where along the aquatic continuum it might be important, is currently limited or lacking altogether. Here we experimentally determine DOM adsorption onto mineral particles in freshwater ecosystems covering a water residence time gradient in boreal landscape Sweden. We hypothesized that adsorption would gradually decrease with increasing water residence time but actually found that DOM is highly susceptible to adsorption throughout the aquatic continuum. Mass spectrometry and fluorescence analysis on DOM suggest that freshly produced aquatic DOM is less susceptible to adsorption than more terrestrial material. Moreover, the percentage DOM adsorbed in the experiments greatly exceeds the actual adsorption taking place in boreal inland waters across all studied systems. These results illustrate the potential impact of mineral erosion, for example, as a result of agriculture, mining or forestry practices, on the availability, transport, and composition of organic carbon in inland waters.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Miljöbioteknik -- Vattenbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Biotechnology -- Water Treatment (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- DOM
- adsorption
- water residence time
- boreal
- aquatic continuum
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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