Katrin Schwab

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N-phenyl-2-naphthylamine, a sediment contaminant previously identified as a major toxicant of site-specific importance was investigated for its mode of toxic action. From short-term bioassays with daphnids, fish eggs, bacteria, and algae it appears that this compound has specific phytotoxic properties at concentrations below 100 microg/L, which cannot be(More)
The new membrane-enclosed silicone collector (MESCO) was, in two different configurations with respect to the thickness of low-density polyethylene membrane used, subject to serial batch extraction tests to obtain (preliminary) sampling rates for estimating water concentrations of selected chlorinated organic compounds and polycyclic aromatic hydrocarbons.(More)
Benthic algae are the dominant primary producers in many rivers and may be at risk of being affected by sediment-associated toxicants. Toxicity as well as bioaccessibility should be considered for the identification of major toxicants affecting benthic algae. Thus, effect-directed analysis (EDA) combining biotesting, fractionation, and chemical analysis was(More)
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