Cited by 76Pharmaceutical and Antibiotic Environmental ImpactsEffects and risks of endocrine disrupting chemicalsEnvironmental Toxicology and Ecotoxicology

Screening of Benzodiazepines in Thirty European Rivers

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Fick, Jerker, Brodin, Tomas, Heynen, Martina, Klaminder, Jonatan, Jonsson, Micael, Grabicova, Katerina, Randak, Tomas, Grabic, Roman +7 more·2017·Chemosphere

Abstract

Pharmaceuticals as environmental contaminants have received a lot of interest over the past decade but, for several pharmaceuticals, relatively little is known about their occurrence in European surface waters. Benzodiazepines, a class of pharmaceuticals with anxiolytic properties, have received interest due to their behavioral modifying effect on exposed biota. In this study, our results show the presence of one or more benzodiazepine(s) in 86% of the analyzed surface water samples (n = 138) from 30 rivers, representing seven larger European catchments. Of the 13 benzodiazepines included in the study, we detected 9, which together showed median and mean concentrations (of the results above limit of quantification) of 5.4 and 9.6 ng L-1, respectively. Four benzodiazepines (oxazepam, temazepam, clobazam, and bromazepam) were the most commonly detected. In particular, oxazepam had the highest frequency of detection (85%) and a maximum concentration of 61 ng L-1. Temazepam and clobazam were found in 26% (maximum concentration of 39 ng L-1) and 14% (maximum concentration of 11 ng L-1) of the samples analyzed, respectively. Finally, bromazepam was found only in Germany and in 16 out of total 138 samples (12%), with a maximum concentration of 320 ng L-1. This study clearly shows that benzodiazepines are common micro-contaminants of the largest European river systems at ng L-1 levels. Although these concentrations are more than a magnitude lower than those reported to have effective effects on exposed biota, environmental effects cannot be excluded considering the possibility of additive and sub-lethal effects.

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Authors
Fick, J., Brodin, T., Heynen, M., Klaminder, J., Jonsson, M., Grabicova, K., Randak, T., Grabic, R., Kodes, V., Slobodnik, J., Sweetman, A., Earnshaw, M., Barra Caracciolo, A., Lettieri, T., & Loos, R.
Affiliations
  • Umeå University (SE)
  • University of South Bohemia in České Budějovice (CZ)
  • Lancaster University (GB)
  • European Commission (BE)
Corresponding author
Fick, Jerker
Venue
Chemosphere
Publisher
Elsevier BV
Published
2017-06
Volume
176
Pages
324-332
ISSN
0045-6535 (ISSN-L)
OpenAlex
W2594678301
Cited by
76
References
34
Citations by year
2026: 4 · 2025: 11 · 2024: 6 · 2023: 7 · 2022: 9 · 2021: 8 · 2020: 9 · 2019: 11 · 2018: 9 · 2017: 2
FWCI
3.82
Type
journal article
Language
en
Open access
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
  • Lancaster EPrints (Lancaster University) (acceptedVersion)
  • Joint Research Centre (European Commission) (submittedVersion)
Funders
  • Umeå Universitet
  • Ministerstvo Školství, Mládeže a Tělovýchovy (CZ.1.05/2.1.00/01.0024, LO1205)
  • Grantová Agentura České Republiky (GACR 16-06498S)
Topics
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
Keywords
benzodiazepines, pharmaceutical pollutants, river pollution, oxazepam, temazepam, clobazam, bromazepam, European rivers, additive effects
MeSH terms
Clobazam, Benzodiazepines, Environmental Monitoring, Europe, Oxazepam, Temazepam, Water Pollutants, Chemical, Rivers

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