Page 235 - Materials Chemistry, Second Edition

L1644_C05.fm Page 208 Monday, October 20, 2003 12:02 PM

Prevision: Total Environment Cost Due to Human Health Damages

Chronic YOLL 55.8%
Acute YOLL 43.9%
Others 0.1%
Hospital admission 0.0%
Cancer 0.0%
Emergency Room Visits 0.0%

0% 25% 50% 75% 100%
Measured as contribution to variance

FIGURE 5.21 Sensitivity analysis for health impacts of the current situation. (Reprinted from
Environ. Int., 28, Sonnemann, G.W. et al., pp. 9–18, ©2002 with permission from Elsevier.)

Prevision: Total Environment Cost Due to Human Health Damages

Chronic YOLL 91.2%
Acute YOLL 8.2%
Others 0.6%
Hospital admission 0.0%
Cancer 0.0%
Emergency Room Visits 0.0%

0% 25% 50% 75% 100%
Measured as contribution to variance

FIGURE 5.22 Sensitivity analysis for health impacts of the former situation. (Reprinted from
Environ. Int., 28, Sonnemann, G.W. et al., pp. 9–18, ©2002 with permission from Elsevier.)

5.8.3 COMPARISON OF UNCERTAINTIES IN LIFE-CYCLE INVENTORY
AND IPA

As a general conclusion, it can be said that the damage estimations carried out in
the IPA contain more uncertainties than the LCI due to the very important
uncertainties related to the dispersion models, dose–response and exposure–response
functions, and the weighting schemes. In detail, the results for the LCI show a
geometric standard deviation between s 1.13 for CO , 1.29 for SO , and 1.92 for
2
2
g
heavy metals or 2.30 for As. That means that higher uncertainties are related to the
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