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Hazardous Waste Toxicology and Risk Assessment

According to the text, Hazardous Waste Management, "toxicology deals with the adverse effects caused by exposure of living organisms to chemical substances." The toxicity of a substance is difficult to determine. In general, the toxicity of a chemical is determined through animal studies which are extrapolated to humans. The extrapolated values are calculated for the most sensitive humans. For example, children are a main focus when determining risk because their immune systems are much weaker than the average healthy middle-aged person. Children are more succeptable to have an adverse effect through exposure to a hazardous chemical. The method of exposure to a contaminant also determines the toxicity level. Chemicals can enter the body through three different routes: dermal contact, ingestion, and inhalation. The entry route adversely determines the effect of a chemical on an individual.

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Date Of Record Release 2010-01-19 15:32:09
Description According to the text, Hazardous Waste Management, "toxicology deals with the adverse effects caused by exposure of living organisms to chemical substances." The toxicity of a substance is difficult to determine. In general, the toxicity of a chemical is determined through animal studies which are extrapolated to humans. The extrapolated values are calculated for the most sensitive humans. For example, children are a main focus when determining risk because their immune systems are much weaker than the average healthy middle-aged person. Children are more succeptable to have an adverse effect through exposure to a hazardous chemical. The method of exposure to a contaminant also determines the toxicity level. Chemicals can enter the body through three different routes: dermal contact, ingestion, and inhalation. The entry route adversely determines the effect of a chemical on an individual.
Classification
Resource Type
Format
Subject
Keyword Fate and Transport, Assessment, Chemical substances
Date Of Record Creation 2010-01-19 15:26:19
Education Level
Date Last Modified 2010-01-19 15:39:17
Language English
Date Record Checked: 2010-01-19 00:00:00 (W3C-DTF)

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