Page 259 - Materials Chemistry, Second Edition

L1644_C06.fm Page 232 Monday, October 20, 2003 12:06 PM

2. Life-cycle inventory
analysis

3. Life-cycle impact
assessment methods for each situation
apply LCIA methods and or scenario
actualize them in necessary

MIdpoint based
MIdpoint potentials DIrect weighting Endpoint-orientated
(e.g., GWP, HTP) weighting methods methods methods
(e.g., Eco-indicator 95, EDIP)
(e.g., Tellus, EcoScarity) (e.g., Eco-indicator 99,
EPS)
classification classification classification
ecosphere
characterization characterization weighting valuesphere
normalization
weighting
selected global
indicator

impact scores
single index
environmental potentials for environmental impact
for impact categories
performance

compare situations
and/or scenarios

damage profile 4. Dominance analysis

FIGURE 6.11 Usage of life-cycle impact assessment methods.

6.5.5 DOMINANCE ANALYSIS AND SPATIAL DIFFERENTIATION
Before determining the predominant processes and pollutants of the studied process
chain for each selected impact score, it must be determined which media are pri-
marily affected by the emissions of the process chain. Afterwards, the environmental
loads and processes must be spatially differentiated. Therefore, in Figure 6.12, the
dominance analysis for media and the spatial differentiation is presented together
with a general overview of this selection procedure.

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