Publication details

PCDDs, PCDFs, PCBs and OCPs in sediments from selected areas in the Slovak Republic

Authors	ČONKA Kamil CHOVANCOVA Jana SEJAKOVA Zuzana Stachova DOEMOETOEROVA Milena FABIŠIKOVÁ Anna DROBNA Beata KOČAN Anton
Year of publication	2014
Type	Article in Periodical
Magazine / Source	Chemosphere
MU Faculty or unit	Faculty of Science
Citation
Web	http://www.sciencedirect.com/science/article/pii/S0045653513013386
Doi	http://dx.doi.org/10.1016/j.chemosphere.2013.09.068
Field	Water pollution and control
Keywords	Polychlorinated dibenzo-p-dioxins; Polychlorinated dibenzofurans; Polychlorinated biphenyls; Organochlorine pesticides; Sediment; Slovakia
Description	Within our research project, 34 river bottom sediments were collected in 2006-2007 at five areas across Slovakia with industrial sources of persistent organic pollutants (Kosice, Krompachy, Nemecka, Sala, Novaky) and one background area (Starina). Sediments were analyzed for seven 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins (PCDDs) and 10 dibenzofurans (PCDFs), 12 dioxin-like and 6 indicator polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB) and 1,1,1,-trichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDT) with 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE). Analytical procedure based on accelerated solvent extraction followed by a semi-automated clean-up and fractionation was used. Determination of target compounds was performed by HRGC-HRMS analysis. Total WHO toxic equivalent WHO1998-PCDD/F/dl-PCB-TEQ concentrations ranged from 0.26 to 559 pg TEQ g(-1) dry matter (dm), with a median 2.2 pg TEQ g(-1) dm. The sums of six indicator PCBs were in the range 0.56-1014 ng g(-1) dm, with a median 11.8 ng g(-1) dm. The concentrations of organochlorine pesticides HCB and p,p'-DDE/DDT varied from 0.15 to 34.8 ng g(-1) dm, with a median 0.91 ng g(-1), dm and 0.46-34.1 ng g(-1) dm, with a median 6.7 ng g(-1) dm, respectively. The most abundant congeners in all sediment samples among dioxins, furans and PCBs were OCDD, 1,2,3,4,6,7,8-HpCDF, PCB-118 and PCB-153. (C) 2013 Elsevier Ltd. All rights reserved.