André Dabrunz
University of Koblenz and Landau
13 Papers
30 Citations
André Dabrunz is an academic researcher from University of Koblenz and Landau. The author has contributed to research in topics: Daphnia magna & Surface coating. The author has an hindex of 6, co-authored 13 publications.
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Papers
Biological surface coating and molting inhibition as mechanisms of TiO2 nanoparticle toxicity in Daphnia magna.
André Dabrunz,Lars Duester,Carsten Prasse,Frank Seitz,Ricki R. Rosenfeldt,Carsten Schilde,Gabriele E. Schaumann,Ralf Schulz +7 more
TL;DR: It is found that suspensions of nanosized (∼100 nm initial mean diameter) titanium dioxide (nTiO2) led to toxicity in Daphnia magna at nominal concentrations and predicted levels as low as 0.24 mg/L (96-h EC50) based on measured concentrations and hypothesized a mechanistic chain of events for n TiO2 toxicity inD. magna that involves the coating of the organism surface with nTiO 2 combined with a molting disruption
Three-Dimensional Analysis of the Swimming Behavior of Daphnia magna Exposed to Nanosized Titanium Dioxide
TL;DR: Spectral analysis of swimming velocities revealed that high-frequency variance, which the authors consider as a measure of swimming activity, was significantly reduced in the 5- and 20-mg/L treatments, highlighting the potential of detailed swimming analysis of D. magna for the evaluation of sub-lethal mechanical stress mechanisms resulting from biological surface coating and thus for evaluating the effects of nanoparticles in the aquatic environment.
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Combined Effect of Invertebrate Predation and Sublethal Pesticide Exposure on the Behavior and Survival of Asellus aquaticus (Crustacea; Isopoda)
TL;DR: In this article, the authors assessed short-term implications of pesticides with different modes of action, namely, the triazole fungicide tebuconazole and the pyrethroid insecticide lambda-cyhalothrin, during a 72-h trial.
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Titanium dioxide nanoparticles detoxify pirimicarb under UV irradiation at ambient intensities
TL;DR: Results indicate a detoxification and therefore remediation potential of the combined application of nTiO₂ and UV irradiation at ambient levels and this potential has not been documented to date in surface waters, where n TiO⁂ concentrations in the low to medium µg/L range may occur.
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A robust, particle size independent, method for quantifying metal(loid oxide) nanoparticles and their agglomerates in complex environmental matrices by electrothermal vaporisation coupled to ICP-MS
Lars Duester,Denis Rakcheev,Julia V. Bayer,Priya Mary Abraham,André Dabrunz,Ralf Schulz,Gabriele E. Schaumann +6 more
TL;DR: In this paper, the authors presented a method/concept for the multi-element quantification of analytes from ENPs in complex matrices with different degrees of complexity by graphite furnace electrothermal vaporization coupled to inductively coupled plasma quadrupole mass spectrometry equipped with collision/reaction cell (GF-ETV-ICP-QMS).
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