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Research Letters in Ecology
Volume 2007, Article ID 12813, 5 pages
Research Letter

Spectral SAR Ecotoxicology of Ionic Liquids: The Daphnia magna Case

1Chemistry Department, West University of Timişoara, 16 Pestalozzi Street, Timişoara 300115, Romania
2Timişoara Institute of Chemistry, Romanian Academy, Mihai Viteazul Avenue 24, Timişoara 300223, Romania

Received 6 September 2007; Accepted 28 October 2007

Academic Editor: Joseph R. Bidwell

Copyright © 2007 Mihai V. Putz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Aiming to provide a unified theory of ionic liquids ecotoxicity, the recent spectral structure activity relationship (S-SAR) algorithm is employed for testing the two additive models of anionic-cationic interaction containing ionic liquid activity: the causal and the endpoint, |0+ and |1+ models, respectively. As a working system, the Daphnia magna ecotoxicity was characterized through the formulated and applied spectral chemical-ecobiological interaction principles. Specific anionic-cationic-ionic-liquid rules of interaction along the developed mechanistic hypersurface map of the main ecotoxicity paths together with the so-called resonance limitation of the standard statistical correlation analysis were revealed.