Lecture_SPPH381C_HS-2.pdf - SPPH 381C Tools to Assess...

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SPPH 381C Tools to Assess Environmental Health
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Tools and methods - Overview 18-9-17 SPPH381C Tools of Env. Health 3 ENVIRONMENTAL HEALTH EXPOSURE ASSESSMENT TOXICOLOGY EPIDEMIOLOGY
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EXPOSURE ASSESSMENT EPIDEMIOLOGY TOXICOLOGY Overview of the class today SPPH381C Tools of Env. Health 4 18-9-17
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Exposure assessment/environmental monitoring learning objectives At the end of this section, you should be able to Distinguish between exposure, hazard, dose Identify the main methods to assess environmental exposures Demonstrate the application of exposure assessment to the assessment of environmental health hazards. 5 18-9-17 SPPH381C Tools of Env. Health
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Recognition of Hazards Hazards Potential Exposure How to deal with hazards Prioritization matrix Probability Consequence Exposure Risk= Probability*Consequence*Exposure SPPH381C Tools of Env. Health 6 18-9-17
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Exposure assessment Being exposed: what does it mean? Exposure: An event that occurs when there is contact at a boundary between a human and the environment with a contaminant of a specific concentration for an interval of time Dose: after uptake into body SPPH381C Tools of Env. Health 7 18-9-17
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Source Effects Concentration Exposure Intake / Dose Presence ≠ Hazard Hazard ≠ Effect Key Point 18-9-17
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Exposure assessment Assessing exposure what do you need to know? Who What Where and When Pathway of exposure and micro-environments: two key concepts for exposure assessment SPPH381C Tools of Env. Health 9 18-9-17
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Exposure pathways and media Routes of exposure Inhalation Ingestion Dermal Media Air Water Food Surfaces Soil Consumer products Physical hazards heat, UV, radiation, noise Urban form walkability, greenspace
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Why is exposure assessment challenging? exposure is rarely constant the agents to which we are exposed are diverse and complex exposure contains a behavioural component that is also complex and variable SPPH381C Tools of Env. Health 11 18-9-17
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