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1D - Soil and Sediment Contamination (TUP/4) The influence of temperature on the transport of monoterpenes through soil. van Roon, Andre1, Krap, Lenny S.1, Parsons, John R.1, Govers, Harrie A.J.1, 1 Institute for Biodiversity and Ecosystem Dynamics, Amsterdam, Noord Holland, The Netherlands ABSTRACT- Monoterpenes and related plant constituents may be used as alternatives to chlorofluorocarbons as industrial solvents and as alternative crop protectants. The potential use of monoterpenes as crop protectants is based on their role in various types of ecological interactions. Because they are considered easily biodegradable, their environmental fate has not been well investigated thus far. We believe that a better understanding of their environmental fate is of interest from both an environmental and an ecological point of view. We studied the transport of 20 selected monoterpenes through soil by calculating the apparent diffusion coefficients and diffusion rates in both the gas and liquid phases of soils. The vertical transport through soil was studied in more detail by using the PESTRAS model which was developed by the Dutch National Institute of Public Health and the Environment (RIVM). This model incorporates transformation, partitioning between the solid, liquid and gas phases, transport, and uptake by plant roots. An important aim of the research is to study the influence of the temperature dependency of the input parameters on the calculated diffusion coefficients, rates and concentrations. Input parameters for these calculations were determined experimentally, taken from literature or estimated. The results of the calculations and the environmental and ecological concequences will be discussed on the poster. Key words: soil transport, monoterpenes, influence of temperature |
