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Source identification, spatio-temporal distribution and ecological risk of persistent organic pollutants in sediments from the upper Danube catchment
Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University, Faculty of Science, Brno, Czech Republ ic. (MTM)ORCID iD: 0000-0003-1733-8334
Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University, Faculty of Science, Brno, Czech Republ ic.
Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University, Faculty of Science, Brno, Czech Republ ic.
Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University, Faculty of Science, Brno, Czech Republ ic.
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2015 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 138, 777-783 p.Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

Riverine sediments, collected on a monthly basis during a period of one year, from five sites in a mixed land use region of the Czech Republic were analysed for chlorinated and brominated persistent organic pollutants (POPs). The region is located in the upper catchment of the Danube River. The POPs concentrations were as follows: 11-930 pg g(-1) polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/Fs), 170-980 pg g(-1) dioxin-like polychlorinated biphenyls (dl-PCBs), 34-13,700 pg g(-1) polychlorinated naphthalenes (PCNs), 5.7-29,200 pg g(-1) polybrominated diphenylethers (PBDEs) and 0.21-351 ng g(-1) hexabromocyclododecanes (HBCDs). Concentrations expressed as toxic equivalents (TEQs), for PCDD/F + dl-PCB + PCN (TEQ(PCDD/F+dla-PCB+PCN)) ranged from 0.37 to 19 pg g(-1). The results revealed a clear spatial separation between sites based on concentration and congener profile. There were also some obvious temporal patterns of selected POPs, which were related to river flow (seasonality) and organic carbon (TOC) of the sediment. Potential sources of POPs include local municipalities (flame retardants), some diffuse sources (PCNs and PCDDs/Fs) and potential point sources (PBDEs). Risk assessment based on risk quotients (RQ) revealed limited to medium ecological risk from PBDEs. TEQ(PCDD/F+dl-PCB+PCN) were low relative to other European rivers, hence the risk to aquatic organisms was considered to be low. PCNs contributed significantly to overall TEQ in several cases.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 138, 777-783 p.
Keyword [en]
Persistent organic pollutants (POPs); Sediment; Source identification; Ecological risk assessment
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-49766DOI: 10.1016/j.chemosphere.2015.08.001ISI: 000361772800102PubMedID: 26291759Scopus ID: 2-s2.0-84940910000OAI: oai:DiVA.org:oru-49766DiVA: diva2:918909
Note

Funding Agencies:

Employment of Best Young Scientists for International Cooperation Empowerment CZ.1.07/2.3.00/30.0037

European Social Fund

State budget of the Czech Republic

Czech Ministry of Education LM2011028  LO1214

Available from: 2016-04-12 Created: 2016-04-12 Last updated: 2017-10-17Bibliographically approved

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CiteExportLink to record
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Citation style
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