1,721,016 research outputs found
Application of Simple partitioning Models in Hazard assessment,, Lewis Publishers, Boca Raton, FL, USA
No full textRecent DDT Contamination In Lake Maggiore (Italy): Modelling in Pelagic And Littoral Foodwebs
No full textRapporto del DBSF sul “Progetto esecutivo delle ricerche sulla distribuzione e gli effetti del DDT nell’ecosistema del Lago Maggiore”
No full textRAPPORTO ALLA COMMISSIONE ITALO-SVIZZERA PER LA PESC
A FUGACITY MODEL OF PESTICIDE RUNOFF TO SURFACE-WATER - DEVELOPMENT AND VALIDATION
No full textReal field data for pesticide release to surface water are compared with data obtained by simulations of a fugacity-derived model. This was done for several herbicides, applied on to two basins, characterized by different soil properties. The basin were hydraulically isolated and data for water input (rainfall and irrigation), output (outflowing surface water) were recorded, together with concentration of the investigated pesticides in the outflowing water. A fugacity model was developed to take into account the unsteady-state condition of the actual field treatments, since pesticides are typically applied once or twice on the same area. The model allows for several pesticide applications on different areas of the basin at different times and for different reaction half lives, that may change during the simulation time, depending on environmental conditions. A “user friendly” program for Windows® was written, allowing for calculations and plotting of the results. The comparison between predicted and measured concentrations indicated that the model is a useful tool for the prediction of surface water concentration
RECENT DDT CONTAMINATION IN LAKE MAGGIORE (ITALY): REPRODUCTION SUCCESS AND DDT LEVELS IN COREGONIDS
No full textPreliminary assessment of potential environmental impact of insecticides treated nets (ITNs) to aquatic ecosystems
No full textReport for WHO –Geneva, CH, Project Roll Back Malaria
Previsione del rilascio di DDT dal suolo della val d’Ossola mediante un approccio modellistico integrato
No full textSIMULATION OF HERBICIDE CONTAMINATION OF THE AQUIFER NORTH OF VICENZA (NORTHEAST ITALY)
No full textThe contamination of the aquifer north of Vicenza (North-East Italy) by atrazine, simazine and alachlor has been simulated developing a simple model based on the fugacity model. The simulation has been carried out taking into account the period 1964–1990 and the results have been compared with the analytical data of the period 1987–1990.
The median concentration (C50) of atrazine measured in the aquifer was 0.028, 0.044 and 0.015 μg/l in 1987, 1988 and 1989–1990 respectively. The simulated values showed a satisfactory behaviour of the model concerning the order of magnitude of the phenomenon. Similar results have been obtained for simazine and alachlor
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