Winter accumulation of acidic pharmaceuticals in a Swedish river

  • Atlasi Daneshvar
  • Jesper Svanfelt
  • Leif KronbergEmail author
  • Gesa A. Weyhenmeyer
Research Article



In this study, seasonal variations in the concentration profile of four analgesics and one lipid regulator were monitored on their way from a wastewater treatment plant (WWTP) effluent, along a river, and into a lake.


From December 2007 to December 2008, water samples were collected monthly (n = 12) from an upstream point, the effluent, four downstream points of the WWTP, and at the point where the river merges with the lake, and the concentrations of ibuprofen, naproxen, bezafibrate, diclofenac, and ketoprofen were determined. The analytical methodology involved solid-phase extraction of the target compounds from water samples followed by liquid chromatography coupled with tandem mass spectrometry for compound separation and detection.


The studied pharmaceuticals were found in the effluent at concentrations ranging from 31 to 1,852 ng l−1 depending on the season. In the river and lake, the concentrations were much lower (6–400 ng l−1) mainly due to dilution but also to a season-dependent contribution from natural transformation processes. The mean mass flow of all analgesics was highest during winter while the highest mean mass flow of the lipid regulator bezafibrate was observed in spring.


The WWTP is the main source of the target compounds in the aquatic environment. The observed winter accumulation signifies the importance of natural transformation processes, which can only be estimated based on mass flow data, on the fate of pharmaceuticals in the environment.


Winter Pharmaceutical WWTP River Sweden 



The authors would like to thank The Swedish Research Council for Environment, Agricultural Sciences, and Spatial Planning (Formas) for financial support of this project. Dr. Jerker Fick is acknowledged for contributing in the early planning of this project and providing the internal standards. Professor Michèle Prévost is also greatly thanked for reviewing the manuscript and her helpful comments.

Supplementary material

11356_2009_261_MOESM1_ESM.doc (36 kb)
ESM Table 1 ESI–MS optimized parameters for the acidic compounds (DOC 36 kb)
11356_2009_261_MOESM2_ESM.doc (28 kb)
ESM Table 2 SPE–LC–MS/MS method validation parameters (DOC 28 kb)
11356_2009_261_MOESM3_ESM.doc (39 kb)
ESM Table 3 The measured concentration of the studied compounds in the effluent of the WWTP (DOC 39 kb)
11356_2009_261_MOESM4_ESM.doc (130 kb)
ESM Table 4 The measured concentration of the studied compounds in the samples collected along the River Fyris (DOC 129 kb)
11356_2009_261_MOESM5_ESM.doc (40 kb)
ESM Table 5 The measured concentration of the studied compounds in the Lake Mälaren (DOC 40 kb)


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Atlasi Daneshvar
    • 1
  • Jesper Svanfelt
    • 2
  • Leif Kronberg
    • 2
    Email author
  • Gesa A. Weyhenmeyer
    • 3
  1. 1.Department of Aquatic Sciences and AssessmentSwedish University of Agricultural SciencesUppsalaSweden
  2. 2.Laboratory of Organic ChemistryÅbo Akademi UniversityÅbo/TurkuFinland
  3. 3.Department of Ecology and EvolutionUppsala UniversityUppsalaSweden

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