Threshold-based life cycle impact assessment and marginal change: incompatible?
نویسندگان
چکیده
A recent contribution in this journal on the application of the RAINS model for acidification in life cycle impact assessment is examined as to mathematical consistency and conceptual content. A general recipe for deriving equivalency factors for life cycle impact assessment is derived. This leads to a rejection of threshold-based impact indicators as a basis for tabulating equivalency factors for use in life cycle assessment of marginal changes. This conclusion extends beyond the impact category of acidification on the basis of RAINS, but is equally valid for any impact indicator that is based on a " track 2 " philosophy.
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