Sökning: L773:0160 4120 OR L773:1873 6750 >
Changes in molecula...
Changes in molecular weight of humic substances in the Gulf of Bothnia
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- Pettersson, Catharina (författare)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Rahm, Lars, 1948- (författare)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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(creator_code:org_t)
- Elsevier BV, 1996
- 1996
- Engelska.
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Ingår i: Environment International. - : Elsevier BV. - 0160-4120 .- 1873-6750. ; 22:5, s. 551-558
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Humic substances were isolated in the brackish Gulf of Bothnia utilizing two techniques: ion exchange on DEAE-cellulose and hydrophobic interaction on XAD-8 resin. The salinity of the water resulted in different yields for the two adsorbents. With XAD-8 resin, 30–80% of the organic carbon was isolated, whereas 5–20% was isolated on the DEAE-cellulose. The concentration of total organic carbon was rather constant but the concentration of humic substances decreased with increasing salinity. Gel filtration was used to measure the homogeneity of the humic fraction. Humic substances isolated in December were more homogeneous than those isolated in June, which indicates a degradation during the summer period which might be caused by photolysis or increased microbial degradation during the warm season.
Ämnesord
- SAMHÄLLSVETENSKAP -- Annan samhällsvetenskap -- Tvärvetenskapliga studier inom samhällsvetenskap (hsv//swe)
- SOCIAL SCIENCES -- Other Social Sciences -- Social Sciences Interdisciplinary (hsv//eng)
Nyckelord
- INTERDISCIPLINARY RESEARCH AREAS
- TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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