Contamination of groundwater with phenol derivatives around a decommissioned chemical factory

Elena Preda1,2, Manuela Maria Mincea1,2, Cosmin Ionascu1,2, Alexandru Valentin Botez1,2, Vasile Ostafe1,2

1 Department of Biology - Chemistry, Faculty of Chemistry - Biology - Geography, West University of Timisoara, 16 Street Pestalozzi, Timisoara 300115, Romania
2 Advanced Research Environmental Laboratories, Multidisciplinary Research Platform "Nicholas Georgescu-Roegen", 4 Street Oituz, Timisoara 300086, Romania

Abstract


In this study, the concentrations of 15 phenol derivatives were analyzed from the phreatic and groundwater wells surrounding a decommissioned chemical factory in a village from the western part of Romania. An UPLC-MS method was used to assess the concentrations of the chemical target compounds in the water samples. The most frequent compounds were 4-chlorophenol, 4-tertoctylphenol and 4-nonylphenol, being detected in 17 of the 19 sampling sites, while the least frequent compound was 2,4,6trichlorophenol, that was found in only 7 samples. The highest mean concentration was obtained for bisphenol A (47.54 ng.mL 1), while 2,4-dinitrophenol was found with the lowest mean concentration (9.38 ng.mL 1). The most contaminated water samples were found in the monitoring wells placed downstream of the factory. With the exception of the samples taken from the municipal drinking water system, the samples from phreatic water wells contained the target phenol derivatives, at various concentrations. Although the platform has ceased completely, the hazard caused by decades of continuous phenolic pollutant leakage is still significant to the present day.

Keywords


monitoring wells; phenol derivatives; water contamination

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