EESA10H3 Lecture Notes - Lecture 10: Montreal Protocol, International Agency For Research On Cancer, List Of Iarc Group 2B Carcinogens
22 Mar 2018
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Document Summary
What is the risk: risk: possibility of suffering from a harmful hazard. Must sometimes take action without full scientific understanding of hazard. Risk assessment sets default procedures for bridging gaps in scientific understanding. Basic framework: evaluate exposure and toxicity; bring this information together to characterize a health risk. 4: verification: risk assessment: scientific process in estimating how much harm a particular hazard can cause. Applications: health canada: regulations for foods and drugs. Canada wide environmental standards (cwes: ontario ministry of environment: site specific clean-up guidelines for contaminated soil, cepa (canadian environmental protection agency) Stages of risk assessment: problem definition, identify contaminant, receptor analysis, pathways analyses, exposure assessment. Lec 10 mar 20: toxicity assessment, risk characterisation, uncertainties, critique. Receptor analysis: organism, species or groups of species exposed to stressor, define scenario: Length of exposure (life time, 20 years latency for cancer) Define routes of exposure (ingestion, inhalation, dermal) Determine rate of exposure from each route.
