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Characterisation Method Information
Characterisation Method Name:
Cd air emissions impact on severe morbidity
Version:
1999
Date Completed:
1999
Principal Method Name:
EPS: cancer pathway
Method Description:
Model for cancer pathway

The characterisation factor is determined by the empirical method.

Category indicator value in system considered
The portion of cancer incidences not causing death (38%) is classified as severe
morbidity. The average length of the morbidity is not known at present, but is assumed to be 5 years. This means that the total indicator value in the environmental system is (5/24)*(0.38/0.62)*0.59 = 0.075 person-years of severe morbidity per kg of Cd, where 0.59 YOLL was the indicator value determined in "Cd air emissions impact on YOLL".

Contribution to category indicators value from a flow unit

The same contribution as in "Cd air emissions impact on YOLL" is valid, i.e. 1/6250 per kg Cd.

Calculation of characterisation factor

This would mean that the characterisation factor would be (5/24)*(0.38/0.62)*
0.59*3.1E-10 = 2.23E-06 person-years/kg cadmium.

Literature Reference:
Steen B (1999b): A systematic approach to environmental priority strategies in product development (EPS). Version 2000 Models and data of the default method CPM report Chalmers University of Technology Sweden
Methodological Range:
In terms of contribution to population exposure urban populations are receiving the highest doses. The main contribution comes from sources in the urban area, but in Southern Sweden the regional background is also important. This means that the trans-boundary pollution can not be neglected (Sievertsen 1986) and that both to Swedish and external sources must be allocated to the category indicator value. Considering an incubation time of the order of 20 years, and that most of the data available are from 1985 the system is defined as Sweden at the state of 1985 during 20 years.
Notes:

Existing Characterisation Factors of Cd air emissions impact on severe morbidity
Characterisation Parameter Category Indicator Impact Indication Principle Aspect Substance Quantity Unit Notes
CFactor Severe morbidity EPS/2000
Type = Emission
Direction = Output
Media = Air
Geography = *
Cd 2.23E-06 p yr/kg Cancer pathways