期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 271, 期 -, 页码 141-149出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2014.01.036
关键词
UV filters; Transformation products; Aquifer contamination; Urban groundwater; Redox conditions
资金
- Spanish Ministry of Economy and Competitiveness through the projects MEPONE [BIA2010-20244]
- SCARCE (Consolider-Ingenio) [CSD2009-00065]
- Generalitat de Catalunya [2009-SGR-1057, 2009-SGR-965]
- AGAUR (Generalitat de Catalunya) through the grant for universities and research centers for the recruitment of new research personnel [FI-DGR 2011]
The occurrence and fate of UV filters (UV F) in an urban aquifer in correlation with (1) the spatial distribution of UV Fin Barcelona's groundwater, (2) the depth of the groundwater sample, (3) the physicochemical properties of the target compounds, (4) the recharge sources, and (5) the redox conditions of the Barcelona aquifers, were studied for the first time. The highest groundwater concentrations and the largest number of detected UV F were observed in an aquifer recharged by a polluted river (around 55 ng/L in SAP-4). In contrast, the urbanized areas had lower concentrations (around 20 ng/L in MPSP-1). Two pathways can be identified for UV F to enter the aquifers: (1) leakage of row sewage from the sewage network in urbanized areas and (2) wastewater treatment plant (WWTP) effluents discharged into the river. Measured concentrations of UV F were significantly much lower than those estimated from the waste water proportion in groundwater samples suggesting that UV F might undergo transformation processes in both reducing and oxidizing conditions. (c) 2014 Elsevier B.V. All rights reserved.
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