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  1. Dispersion modelling of dioxin releases from the waste incinerator at Avonmouth, Bristol, UK.

    Article - En anglais

    A modified Gaussian atmospheric dispersion model, Industrial Source Complex (ISCST3), is used to estimate toxic equivalent ground level concentrations (GLC) of dioxins emitted from the Avonmouth municipal waste incinerator (MWI) in Bristol, UK.

    The sensitivity of the predicted GLC to various vapour and particle partitioning scenarios is reported.

    Predictions incorporating local terrain and actual emission data are used to estimate the mean incremental intake of dioxin due to MWI operation for local residents, through an existing multi-pathway human exposure model.

    Results are compared with predictions of incremental intake for a generalised MWI.

    The mean incremental dioxin intake for a hypothetical maximum exposed individual (HMEI) is shown to be up to 46.5% of the background intake compared to only 1.14% for the generalised MWI scenario.

    This indicates that the use of local terrain and emission data in MWI dispersion modelling is crucial for health risk assessments associated with human dioxin intake, especially in view of the current debate over the tolerable daily intake for dioxins.

    Mots-clés Pascal : Royaume Uni, Europe, Déchet solide, Déchet urbain, Traitement déchet, Traitement thermique, Incinération, Pollution air, Emission polluant, Chlore Composé organique, Hétérocycle oxygène, Dibenzo-p-dioxine(polychloro), Dibenzofurane(polychloro), Devenir polluant, Dispersion atmosphérique, Partage phase, Toxicité, Homme, Exposition, Facteur risque, Modélisation

    Mots-clés Pascal anglais : United Kingdom, Europe, Solid waste, Urban waste, Waste treatment, Heat treatment, Incineration, Air pollution, Pollutant emission, Chlorine Organic compounds, Oxygen heterocycle, Pollutant behavior, Atmospheric dispersion, Phase partition, Toxicity, Human, Exposure, Risk factor, Modeling

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0278360

    Code Inist : 001D16C04A. Création : 16/11/1999.