Priority substances in sediments of the "Carska Bara" special nature reserve, a natural scientific research area on the UNESCO list. (1st November 2016)

• Record Type: Journal Article
• Authors: Grba, Nenad; Krčmar, Dejan; Isakovski, Marijana Kragulj; Jazić, Jelena Molnar; Maletić, Snežana; Pešić, Vesna; Dalmacija, Božo
• Is Part Of: Journal of environmental management. Volume 182(2016)
• Page Start: 149
• Page End: 159
• Publication Date: 2016-11-01
• Subjects: Priority substances in sediment -- Contamination criteria -- Multivariate statistical techniques -- Legislation; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2016.07.059
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: Surface sediments were subject to systematic long-term monitoring (2002–2014) in the Republic of Serbia (Province of Vojvodina). Eight heavy metals (Ni, Zn, Cd, Cr, Cu, Pb, As and Hg), mineral oils (total petroleum hydrocarbons), 16 EPA PAHs, selected pesticides and polychlorinated biphenyls (PCB) were monitored. As part of this research, this paper presents a sediment contamination spatial and temporal trend study of diverse pollution sources and the ecological risk status of the alluvial sediments of Carska Bara at three representative sampling sites (S1S3), in order to establish the status of contamination and recommend substances of interest for more widespread future monitoring. Multivariate statistical methods including factor analysis of principal component analysis (PCA/FA), Pearson correlation and several synthetic indicators were used to evaluate the extent and origin of contamination (anthropogenic or natural, geogenic sources) and potential ecological risks. Hg, Cd, As, mineral oils and PAHs (dominated by dibenzo(a, h)anthracene and benzo( a )pyrene, contributing 85.7% of the total) are derived from several anthropogenic sources, whereas Ni, Cu, Cr and Zn are convincingly of geogenic origin, and exhibit dual origins. Cd and Hg significantly raise the levels of potential ecological risk for all sampling locations, demonstrating the effect of long-term bioaccumulation and biomagnification. Pb is isolated from the other parameters, implying unique sources. This research suggests four heavy metals (Zn, Cr, Cu and As) and dibenzo(a, h)anthracene be added to the list of priority pollutants within the context of the application of the European Water Framework Directive (WFD), in accordance with significant national and similar environmental data from countries in the region. Highlights: Priority and selected substances were analyzed in nature reserve sediments. 8 heavy metals and 13 PAHs have significant spatial and temporal variations. Hg, Cd, Pb and dibenzo(a, h)anthracene (DBA) are of great ecological concern. Zn, Cr, Cu, As and DBA should be monitored in sediments under the WFD.