Priority substances in accumulated sediments in a stormwater detention basin from an industrial area. (December 2018)

• Record Type: Journal Article
• Authors: Wiest, Laure; Baudot, Robert; Lafay, Florent; Bonjour, Erik; Becouze-Lareure, Céline; Aubin, Jean-Baptiste; Jame, Patrick; Barraud, Sylvie; Kouyi, Gislain Lipeme; Sébastian, Christel; Vulliet, Emmanuelle
• Is Part Of: Environmental pollution. Volume 243(2018)Part B
• Page Start: 1669
• Page End: 1678
• Publication Date: 2018-12
• Subjects: Detention basin -- Stormwater -- Sediment -- Pesticide -- Endocrine disruptor; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2018.09.138
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: One of the most adopted solutions in developed countries to manage stormwater is detention/retention basins which generate large quantities of sediments that have to be removed regularly. In order to manage them properly, accurate data are needed about their physical and chemical characteristics, particularly on micropollutant concentrations and their associated risk. This work consisted in a two-year sampling of dry sediments from a detention-settling basin. Priority substances, including pesticides, polybrominated diphenyl ethers (PBDE), alkylphenols and bisphenol A (BPA), were monitored. Different sites in the basin bottom were sampled in order to investigate spatial distribution of the contamination. Results show that the increase of the sediment thickness in the basin was heterogeneous with a maximum of 15 cm after two years. Pesticides and PBDE were, if detected, mainly found in low concentrations from 2 ng/g to 286 ng/g. Conversely, alkylphenols and bisphenol A were always quantified at concentrations varying from 6 ng/g to 3400 ng/g. These high levels suggest that these sediments should be managed with precautions. Spatial heterogeneity of alkylphenol ethoxylates and BPA concentrations was observed, with higher contamination of alkylphenol ethoxylates in anaerobic zones and BPA levels correlated with total organic carbon and in a lesser extent to fine particles. Graphical abstract: Image 1 Highlights: Strong impregnation of stormwater sediments with 4-nonylphenol and bisphenol A. Contamination of sediments did not increase with time. Spatial heterogeneity was different from one substance to another. Bisphenol A concentrations and total organic carbon were correlated. Some sources of priority substances in an industrial catchment were highlighted. Abstract : Forty four priority substances, including endocrine disruptors, were followed during two years in stormwater sediments from a dry detention basin.