title: Contamination of the southern Baltic Sea waters by the residues of selected pharmaceuticals: Method development and field studies.
abstract: In this study the occurrence of thirteen pharmaceuticals in seawaters collected from southern Baltic Sea was evaluated for the first time. It was performed by applying newly developed analytical procedure. The method was characterized in terms of its basic validation parameters as well as matrix effects, extraction efficiency and absolute recovery. The results were expressed as result ± expanded uncertainty, which was estimated according to the Guide to the Expression of Uncertainty in Measurement. Additionally, in order to verify the influence of variable parameters of the analyzed samples on method performance parameters, chemometric analysis was carried out. The obtained results revealed that residues of pharmaceuticals were present in seawaters at a concentration level of ng L(-1). Trimethoprim, sulfamethoxazole and enrofloxacin were most frequently detected compounds. The highest concentration was determined for ketoprofen (135.0 ± 10.9 ng L(-1)). Marine pollution potential hotspots were found in enclosed or semi-enclosed bodies of water.
authors: Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland.
authors: Marta
authors: M
authors: Borecka
authors: Institute of Oceanology, Polish Academy of Sciences, ul. Powstańców Warszawy 55, 81-712 Sopot, Poland.
authors: Grzegorz
authors: G
authors: Siedlewicz
authors: Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland.
authors: Łukasz P
authors: ŁP
authors: Haliński
authors: Physicochemical Laboratories, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland.
authors: Kinga
authors: K
authors: Sikora
authors: Institute of Oceanology, Polish Academy of Sciences, ul. Powstańców Warszawy 55, 81-712 Sopot, Poland.
authors: Ksenia
authors: K
authors: Pazdro
authors: Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland.
authors: Piotr
authors: P
authors: Stepnowski
authors: Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland. Electronic address: a.bialk-bielinska@ug.edu.pl.
authors: Anna
authors: A
authors: Białk-Bielińska
mesh_terms: D001454:Baltic States; D004784:Environmental Monitoring / Q000379:methods*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D012623:Seawater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D004364:Pharmaceutical Preparations; D014874:Water Pollutants, Chemical
keywords: Baltic Sea; LC–MS/MS; Marine waters contamination; Matrix effects; Pharmaceutical residues; Uncertainty estimation