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Assessment of bioavailable fraction of POPS in surface water bodies in Johannesburg City, South Africa, using passive samplers: an initial assessment
Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, South Africa.
Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, South Africa.
Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, South Africa.
Research Centre for Toxic Compounds in the Environment (RECETOX), Masaryk University, Brno, Czech Republic. (MTM)ORCID iD: 0000-0003-1733-8334
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2014 (English)In: Environmental Monitoring & Assessment, ISSN 0167-6369, E-ISSN 1573-2959, Vol. 186, no 9, p. 5639-5653Article in journal (Refereed) Published
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Abstract [en]

In this study, the semipermeable membrane device (SPMD) passive samplers were used to determine freely dissolved concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in selected water bodies situated in and around Johannesburg City, South Africa. The devices were deployed for 14 days at each sampling site in spring and summer of 2011. Time weighted average (TWA) concentrations of the water-borne contaminants were calculated from the amounts of analytes accumulated in the passive samplers. In the area of interest, concentrations of analytes in water ranged from 33.5 to 126.8 ng l(-1) for PAHs, from 20.9 to 120.9 pg l(-1) for PCBs and from 0.2 to 36.9 ng l(-1) for OCPs. Chlorinated pesticides were mainly composed of hexachlorocyclohexanes (HCHs) (0.15-36.9 ng l(-1)) and dichlorodiphenyltrichloromethane (DDT) with its metabolites (0.03-0.55 ng l(-1)). By applying diagnostic ratios of certain PAHs, identification of possible sources of the contaminants in the various sampling sites was performed. These ratios were generally inclined towards pyrogenic sources of pollution by PAHs in all study sites except in the Centurion River (CR), Centurion Lake (CL) and Airport River (AUP) that indicated petrogenic origins. This study highlights further need to map up the temporal and spatial variations of these POPs using passive samplers.

Place, publisher, year, edition, pages
Springer Netherlands, 2014. Vol. 186, no 9, p. 5639-5653
Keywords [en]
Free dissolved concentration; Passive sampling devices; Hydrophobic organic compounds; Monitoring; Passive sampling; SPMDs
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-49776DOI: 10.1007/s10661-014-3809-3ISI: 000339827500027PubMedID: 24869948Scopus ID: 2-s2.0-84905985289OAI: oai:DiVA.org:oru-49776DiVA, id: diva2:918899
Note

Funding Agencies:

Czech Ministry of Education of the Czech Republic LM2011028  LO1214

National Research Foundation (NRF)

Water Research Commission (WRC) of South Africa

Available from: 2016-04-12 Created: 2016-04-12 Last updated: 2017-11-30Bibliographically approved

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Kukucka, Petr

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