Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1021/acs.est.0c05537
Lizenz Keine CC-Lizenz
Titel (primär) Bioavailable environmental pollutant patterns in sediments from passive equilibrium sampling
Autor Muz, M.; Escher, B.I.; Jahnke, A. ORCID logo
Journal / Serie Environmental Science & Technology
Erscheinungsjahr 2020
Band/Volume 54
Heft 24
Seite von 15861
Seite bis 15871
Sprache englisch
Abstract Sediment-associated risks depend on the bioavailable fraction of organic chemicals and cannot be comprehended by their total concentrations. The present study investigated contamination patterns of bioavailable chemicals in sediments from various sites around the globe by using passive equilibrium sampling. The extracts had been characterized previously for mixture effects by in vitro reporter gene assays and were in this study analyzed using gas chromatography-high resolution mass spectrometry for 121 chemicals including both legacy and emerging contaminants. The spatial distribution of the detected chemicals revealed distinct contamination patterns among sampling sites. We identified compounds in common at the different sites but most contaminant mixtures were site-specific. The mixture effects of the detected chemicals were predicted with a mixture toxicity model from effect concentrations of bioactive single chemicals and detected concentrations, applying a joint model for concentration addition and independent action. The predicted mixture effects were dominated by polycyclic aromatic hydrocarbons, and among the chemicals with available effect data, 17% elicited oxidative stress response and 18% activated the arylhydrocarbon receptor. Except for two sites in Sweden, where 11 and 38% of the observed oxidative stress response were explained by the detected chemicals, less than 10% of effects in both biological end points were explained. These results provide a comprehensive investigation of bioavailable contamination patterns of sediments and may serve as an example of employing passive equilibrium sampling as a monitoring technique to integrate the risk of bioavailable sediment-associated chemicals in aquatic environments.
dauerhafte UFZ-Verlinkung
Muz, M., Escher, B.I., Jahnke, A. (2020):
Bioavailable environmental pollutant patterns in sediments from passive equilibrium sampling
Environ. Sci. Technol. 54 (24), 15861 - 15871