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Assessment of toxicological profiles of the municipal wastewater effluents using chemical analyses and bioassays

Smital, Tvrtko; Terzić, Senka; Žaja, Roko; Senta, Ivan; Pivčević, Branka; Popović, Marta; Mikac, Iva; Tollefsen, Knut Erik; Thomas, Kevin. V.; Ahel, Marijan (2011) Assessment of toxicological profiles of the municipal wastewater effluents using chemical analyses and bioassays. Ecotoxicology and Environmental Safety, 74 (4). pp. 844-851. ISSN 0147-6513

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Abstract

The hazardous chemical contamination of untreated wastewater and secondary effluent from the wastewater treatment plant (WWTP) of the city of Zagreb, Croatia, was comprehensively characterised using large-volume solid-phase extraction (SPE) and silicagel fractionation followed by a detailed analysis of the resulting extracts by a combination of chemical and bioassay methods. Over 100 individual contaminants or closely related-contaminant groups were identified by high-resolution gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/quadrupole time-of-flight mass spectrometry (LC-QTOF). Ecotoxicity profiling of the investigated samples, including cytotoxicity, chronic toxicity, EROD activity ; inhibition of the multixenobiotic resistance (MXR), genotoxicicity and estrogenic potential, revealed the most significant contribution of toxic compounds to be present in polar fractions. Wastewater treatment using conventional activated sludge process reduced the initial toxicity of raw wastewater to various extents, ranging from 28% for algal toxicity to 73.2% for estrogenic activity. The most efficient toxicity removal was observed for the polar compounds.

Item Type: Article
Uncontrolled Keywords: organic contaminants; wastewater; GC/MS; LC/MS; bioassays; identification
Subjects: NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions: Division for Marine and Enviromental Research
Projects:
Project titleProject leaderProject codeProject type
Ekotoksikološko značenje ABC transportnih proteina u vodenih organizama-Tvrtko Smital098-0982934-2745MZOS
Organski spojevi kao molekulski obilježivači antropogenog utjecaja na okoliš-Marijan Ahel098-0982934-2712MZOS
Depositing User: Marta Popović
Date Deposited: 07 Nov 2018 14:44
Last Modified: 07 Nov 2018 14:44
URI: http://fulir.irb.hr/id/eprint/4217
DOI: 10.1016/j.ecoenv.2010.11.010

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