Dynamic modelling of the fate of DDT in Lake Maggiore: Preliminary results S. Dueri, J. M. Zaldívar and A. Olivella Institute for Environment and Sustainability 2005 EUR 21663 EN 1 The mission of the Institute for Environment and Sustainability is to provide scientific and technical support to EU policies for the protection of the environment contributing to sustainable development in Europe. European Commission Directorate-General Joint Research Centre Institute for Environment and Sustainability Contact information Address:Via E. Fermi 1, TP 272 E-mail:
[email protected] Tel.:+39-0332789202 Fax: +39-0332785807 http://ies.jrc.cec.eu.int http://www.jrc.cec.eu.int Legal Notice Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of this publication. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server http://europa.eu.int EUR 21663 EN Luxembourg: Office for Official Publications of the European Communities © European Communities, 2005 Reproduction is authorised provided the source is acknowledged Printed in Italy 2 CONTENTS 1. INTRODUCTION 4 2. FATE AND TRANSPORT OF DDT: MASS BALANCE MODEL 5 2.1 Sorptium equilibria 7 2.2 Air-Water Exchange 8 2.3 Dry and wet deposition 12 2.4 Sediment deposition: Settling 13 2.5 Sediments-Water Exchange 13 2.6 Resuspension and burial 15 2.7 Pore water diffusion 16 2.8 Sediment biodiffusion 16 2.9 Chemical loss rate 17 3. LAKE MAGGIORE PARAMETERS AND BOUNDARY DATA 17 3.1.