Class Notes (836,147)
Canada (509,656)
ENH 122 (36)
Jian Guan (10)
Lecture

risk assessments science

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Department
Environmental Health
Course
ENH 122
Professor
Jian Guan
Semester
Fall

Description
Chapter13 The Science of Risk AssessmentThe basic model partitions risk assessment into four steps hazard identification doseresponse modeling exposure assessment and risk characterization Integration of a risk assessment with a cost analysis and other matters to develop strategies for risk regulations and control often called risk managementHazard identification uses the input of biologist chemist and others to determine whether available data indicate that some compound or exposure should be considered possible hazards Doseresponse modeling requires the input of statisticians epidemiologist and people expert in developing models that predict adverse response as a function of dose Toxicologists are important for understanding mechanism of toxicity and the relevance of animal data for human exposuresExposure measurements often require the input of engineers as well as hydrologist for waterborne hazards meteorologists for airborne hazards And analytical chemists The risks associated with exposures to a hazard may be expressed by a variety of summary satisticans that include individual life time risk annual population risk the percentage or proportion of increase in risk and loss of life expectancy Six essential issues arise in risk assessment First not every person exposed to a potential hazard will e
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