Environmental exposure of anthropogenic micropollutants in the Prut River at the Romanian-Moldavian border: a snapshot in the lower Danube river basin
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MOLDOVAN, Zaharie; MARINCAŞ, Olivian; POVAR, Igor; LUPASCU, Tudor; LONGREE, Philipp; ROTA, Jelena Simovic; SINGER, Heinz; ALDER, Alfredo. Environmental exposure of anthropogenic micropollutants in the Prut River at the Romanian-Moldavian border: a snapshot in the lower Danube river basin. In: Environmental Science and Pollution Research. 2018, nr. 25(31), pp. 31040-31050. ISSN 0944-1344.
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Environmental Science and Pollution Research
Numărul 25(31) / 2018 / ISSN 0944-1344

Environmental exposure of anthropogenic micropollutants in the Prut River at the Romanian-Moldavian border: a snapshot in the lower Danube river basin


DOI: 10.1007/s11356-018-3025-8
Pag. 31040-31050

Moldovan Zaharie1, Marincaş Olivian1, Povar Igor2, Lupascu Tudor2, Longree Philipp3, Rota Jelena Simovic3, Singer Heinz3, Alder Alfredo3
 
1 Institutul Naţional de Cercetare-Dezvoltare pentru Tehnologii Izotopice şi Moleculare,
2 Institute of Chemistry,
3 Swiss Federal Institute of Aquatic Science and Technology, Dübendorf
 
Disponibil în IBN: 4 decembrie 2018


Rezumat

The Prut River, the second longest tributary of the Danube river, was investigated for a wide range of anthropogenic organic pollutants to fill the data gap on environmental contamination in eastern European surface waters. In this study, the occurrence of a wide range of organic pollutants was measured along the transboundary Prut River, between Sculeni and Branza in 2010–2012. Using two different analytical methods, gas chromatography coupled to mass spectrometry and liquid chromatography coupled to high-resolution mass spectrometry, over 300 compounds were screened for and 88 compounds were determined in the Prut River. In general, the chemicals occurred at low levels. At the last sampling site upstream of the confluence with the Danube river at Branza, the highest average concentrations (≥ 100 ng L−1) were determined for the artificial sweetener acesulfame, the pharmaceuticals metformin, 4-acetamidoantipyrene, and 4,4,5,8-tetramethylchroman-2-ol, the antioxidants 2,4-di-tert-butylphenol, 3-tert-butyl-4-hydroxyanisol, and 3,5-di-tert-butyl-4-hydroxy-toluene, the personal care products HHCB (galaxolide), 4-phenyl-benzophenone, and octyl dimethyl-p-aminobenzoic acid, the industrial chemical diphenylsulfone, and the sterol cholesterol. Low concentrations of agricultural pesticides occurred in the catchment. At Branza, the total accumulated load of all measured compounds was calculated to be almost 19 kg day−1. In comparison to the Rhine River, the loads in the Prut, determined with same LC-HRMS method for the same set of analytes, were two orders of magnitude lower. Discharge of wastewater without proper treatment from the city of Iasi in the Jijia catchment (Romania) as well as from the city of Cahul (Moldova) revealed a distinct increase in concentrations and loads in the Prut at Frasinesti and Branza. Thus, an implementation of wastewater treatment capacities in the Prut River basin would considerably reduce the loads of micropollutants from urban point sources.

Cuvinte-cheie
GC-MS, Prut, LC-HRMS, Organic pollutants, River catchment, River monitoring, Target screening