ENSC-3717EL Lecture Notes - Lecture 4: Maximum Exposure, Risk Assessment
26 Mar 2017
School
Department
Course
Professor
Document Summary
This section summarizes the assessment of all routes of exposure of the coc"s from different sources and media for typical residents of the sudbury area. The main objective was to predict the rate of exposure of selected human receptors to the. The rate of exposure to coc"s from various pathways is quantitatively reported as the amount of stressor for a receptor in a period of time: the degree of exposure to chemicals depends upon the interactions of several parameters: The physical and chemical characteristics of the cocs ( speciation ) The receptor(s) and his/her/their behaviour (urban dweller vs angler, etc. Cocs in soils, drinking water and sources of food (mass of coc/mass of food or liquid) Reasonable estimates of intakes from all sources (mass/day): this information was placed in a database and used as input data into the models. Endpoints: the threshold toxicity is best represented by comparing the intake to an exposure limit.
