Potential contribution of organosilicon compounds to reduced leaching of biocides in wood protection |
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| Authors: | Liesbeth De Vetter Griet Depraetere Marc Stevens Colin Janssen Joris Van Acker |
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| Institution: | 1. Faculty of Bioscience Engineering, Laboratory of Wood Technology, Ghent University, Coupure Links 653, 9000, Gent, Belgium
2. Faculty of Bioscience Engineering, Laboratory of Environmental Toxicology and Aquatic Ecology, Research Group Environmental Toxicology, Ghent University, J. Plateaustraat 22, 9000, Gent, Belgium
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| Abstract: | ? Leaching of biocide treated wood leads to reduced effectiveness and potential threat to the environment. ? Therefore the effectiveness of organosilicons as protective systems of biocides was evaluated. Scots pine sapwood specimens were impregnated with solely organosilicons and biocides as well as with combinations of both. ? The biocides 3-iodo-2-propynylbutylcarbamate, propiconazole and 3-(trimethoxysilyl)propyldimethyloctadecyl ammonium chloride confirmed their effectiveness regardless the addition of an organosilicon. Low leachate toxicities to the crustacean Daphnia magna were found for the organosilicons, whereas significant leachate toxicities were measured for the biocides. Combining both did not considerably diminish the leachate toxicities. ? It must therefore be concluded that under the circumstances as described in this article, organosilicons do not interfere with the efficacy of the biocides, but they do not contribute to a reduced leaching of the biocides either. |
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