title: PCDDs, PCDFs, PCBs and OCPs in sediments from selected areas in the Slovak Republic.
abstract: 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 (Košice, Krompachy, Nemecká, Šala, Nováky) 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.
authors.affiliation: Department of Toxic Organic Pollutants, Slovak Medical University, Limbová 12, 833 03 Bratislava, Slovak Republic. Electronic address: kamil.conka@szu.sk.
authors.forename: Kamil
authors.initials: K
authors.lastname: Čonka
authors.affiliation: Department of Toxic Organic Pollutants, Slovak Medical University, Limbová 12, 833 03 Bratislava, Slovak Republic.
authors.forename: Jana
authors.initials: J
authors.lastname: Chovancová
authors.affiliation: Department of Toxic Organic Pollutants, Slovak Medical University, Limbová 12, 833 03 Bratislava, Slovak Republic.
authors.forename: Zuzana
authors.initials: Z
authors.lastname: Stachová Sejáková
authors.affiliation: Public Health Authority of the Slovak Republic, Trnavská 52, 826 45 Bratislava, Slovak Republic.
authors.forename: Milena
authors.initials: M
authors.lastname: Dömötörová
authors.affiliation: Department of Toxic Organic Pollutants, Slovak Medical University, Limbová 12, 833 03 Bratislava, Slovak Republic.
authors.forename: Anna
authors.initials: A
authors.lastname: Fabišiková
authors.affiliation: Department of Toxic Organic Pollutants, Slovak Medical University, Limbová 12, 833 03 Bratislava, Slovak Republic.
authors.forename: Beáta
authors.initials: B
authors.lastname: Drobná
authors.affiliation: Research Centre for Toxic Compounds in the Environment, Masaryk University, Faculty of Science, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic.
authors.forename: Anton
authors.initials: A
authors.lastname: Kočan
mesh_terms: D001572:Benzofurans / Q000032:analysis*; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D006581:Hexachlorobenzene / Q000032:analysis; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D011108:Polymers / Q000032:analysis*; D045483:Rivers / Q000737:chemistry; D018154:Slovakia; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D001572:Benzofurans; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D000072317:Polychlorinated Dibenzodioxins; D011108:Polymers; D014874:Water Pollutants, Chemical; C016068:polychlorodibenzofuran; C070055:2,3',4,4',5-pentachlorobiphenyl; D003633:Dichlorodiphenyl Dichloroethylene; D006581:Hexachlorobenzene; D011078:Polychlorinated Biphenyls; C014024:2,4,5,2',4',5'-hexachlorobiphenyl
keywords: Organochlorine pesticides; Polychlorinated biphenyls; Polychlorinated dibenzo-p-dioxins; Polychlorinated dibenzofurans; Sediment; Slovakia