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Unformatted text preview: demanding than that for the other categories . • It can be a help to use qualitative assessment tools to designate the most significant emission and thus to focus the quantitative assessment on them. 2 • A qualitative method was therefore developed for assessment of substances' ecotoxic and human toxic characteristics . • The method is also used in a simple ranking of alternative products on the basis of the ecotoxicity and the toxicity of the substances emitted during the products' life cycles. • For both ecotoxicity and human toxicity, the method is based on separate assessments of (i) Exposure: the possibility that an emission will occur and the extent of exposure. (ii) Toxicity: the substance’s ecotoxicity or human toxicity. The qualitative assessment of a chemical is expressed in an impact score, which is the product of an exposure score and human toxicity or ecotoxicity score . 3...
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This note was uploaded on 12/07/2011 for the course ME ME4211 taught by Professor Dr.a.vyas during the Winter '11 term at NYU Poly.
- Winter '11