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Chloroform in runof...
Chloroform in runoff water : a two-year study in a small catchment in southeast Sweden
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- Svensson, Teresia (författare)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Laturnus, Frank (författare)
- Linköpings universitet,Centrum för klimatpolitisk forskning,Filosofiska fakulteten
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- Sandén, Per (författare)
- Linköpings universitet,Centrum för klimatpolitisk forskning,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Öberg, Gunilla (författare)
- Institute for Resources, Environment and Sustainability, Faculty of Graduate Studies, University of British Columbia, Aquatic Ecosystem Research Laboratory, Vancouver, BC, Canada
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(creator_code:org_t)
- 2006-10-20
- 2007
- Engelska.
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Ingår i: Biogeochemistry. - : Springer Science and Business Media LLC. - 0168-2563 .- 1573-515X. ; 82:2, s. 139-151
- Relaterad länk:
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http://urn.kb.se/res...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Chloroform concentrations were observed and input and output fluxes estimated over a 2-yr period in a small coniferous catchment (0.22 km2) in southeast Sweden. Water discharge was measured daily, and runoff water was sampled bi-weekly for chloroform analysis. An approximate chloroform budget was calculated, which indicated that the annual output of 6 μg m−2 yr−1 was approximately six times higher than the input, inferring an internal source of chloroform in the catchment. To the best of our knowledge, neither flux estimates nor mass balances have previously been made for chloroform on a catchment scale, nor have data regarding natural runoff variation with time been gathered. Concentrations of chloroform in runoff were found to be generally high during wet periods, such as spring, but also peaked during summer rain events. The observed pattern suggests that chloroform is formed in surface soil layers and transported to the outlet under high-flow conditions and during dry-period rain events; it is lost through degradation or evaporation during drier periods due to longer soil water residence times. The data suggest that the variation among replicates increases with concentration; this emphasizes the need to know what the degree of on-site variation is, so one can collect a sufficient number of replicates to permit detection of spatial or temporal changes.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
Nyckelord
- Biogeochemistry
- Catchment
- Chloroform
- Water
- VOCl
- Water in nature and society
- Vatten i natur och samhälle
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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