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Bioassay-directed chemical analysis utilizing LC-MS: a tool for identifying estrogenic compounds in water samples?

Research output: Journal contributions › Journal articles › Research › peer-review

Authors

A bioassay-directed chemical analysis (BDCA) scheme has been developed which combines a yeast screen for estrogenic activity with LC-MS detection after liquid-liquid extraction and fractionation by size exclusion chromatography. Focusing on sewage-treatment plant (STP) effluents, the approach aims at characterizing the substances responsible for estrogenic effects in aquatic systems. Initial results show a strong response of STP effluent extracts in the yeast screen. Estrone, bisphenol A, and nonylphenol have been identified as substances being partly responsible for observed estrogenic activity. However, confirmation experiments with synthetic samples revealed that the estrogenic effect potentials of the samples could not be completely assigned to specific compounds. Further improvement of the limits of detection of the analytical scheme is needed to enable identification and quantification of potent estrogenic compounds at low concentrations.

Original languageEnglish
JournalAnalytical & Bioanalytical Chemistry
Volume378
Issue number3
Pages (from-to)709-715
Number of pages7
ISSN1618-2642
DOIs
Publication statusPublished - 01.02.2004

    Research areas

  • Chemistry
  • Bioassay-directed chemical analysis, Estrogenic activity, LC-MS-MS, Liquid-liquid extraction, Saccharomyces cerevisiae, Sewage-treatment plant effluent

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