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UV-light induced mineralization of organic matter bound chlorine in Lake BjΣn, Sweden - A laboratory study
Linköping University, Department of Physics, Chemistry and Biology.
Linköping University, Faculty of Arts and Sciences. Linköping University, Department of Thematic Studies, Environmental Science.
2003 (English)In: Chemosphere, ISSN 0045-6535, Vol. 52, no 2, 463-469 p.Article in journal (Refereed) Published
Abstract [en]

Surface water and aqueous solutions of isolated organic matter from a humic rich lake in southern Sweden were exposed to artificial UV radiation to investigate the UV light induced influence on organic matter bound chlorine in natural systems. It was found that the photodegradation of organic matter bound chlorine was more pronounced than the photodegradation of organic carbon. After 120 h of irradiation of the isolated organic matter, only 35% of the initial organochlorine was still in the solution compared to about 70% of the dissolved organic carbon (DOC). A similar result was obtained for unfractionated surface water. Furthermore, our results indicate that the loss of organic chlorine was mainly due to a mineralization of organic chlorine into chloride ions. The total decrease of organic chlorine after 120 h was 32 ╡g Clorg l-1, of which the major part disappeared in the initial irradiation phase. A similar increase was observed in the chloride concentration (34 ╡g Cl- l-1).

Place, publisher, year, edition, pages
2003. Vol. 52, no 2, 463-469 p.
Keyword [en]
Organic chlorine; Chloride; DOC; Photodegradation; Surface water
National Category
Social Sciences Interdisciplinary
URN: urn:nbn:se:liu:diva-22826DOI: 10.1016/S0045-6535(03)00194-2Local ID: 2164OAI: diva2:243139
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2011-01-13

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Karlsson, SusanneÖberg, Gunilla
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