| An implemented approach for estimating
uncertainties for toxicological
impact characterisation .
R. Rosenbaum, D.W. Pennington, O. Jolliet |
 Abstract: One approach
accounting
for parameter and model uncertainty is implemented in the LCIA (life
cycle impact assessment) method IMPACT 2002. The uncertainty is
estimated for intermediate results from the chemical fate, human intake
fraction, and two toxicological effect modules. Overall uncertainty
estimates are then arithmetically calculated. Results are presented for
impact contributions in the contexts of aquatic ecosystems and human
health. The approach of Hofstetter (1998) was adapted for estimating
the uncertainty related to chemical fate and human intake fraction. A
fundamental problem when estimating uncertainties for 1000's of
substances consists of the lack uncertainty distributions for
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