|Characterisation Method Name:|
|H2S impact on base cat-ion capacity|
|Principal Method Name:|
|EPS: equivalency method using SO2 as a reference|
The characterisation factor is determined by an equivalency method using SO2 as a reference.
It is assumed that almost all hydrogen sulphide is oxidised to SO2 in the atmosphere. Therefore 1 kg of H2S is equal to 1.49 kg SO2.
Calculation of characterisation factor
The characterisation factor for SO2 was estimated in "SO2 impact on base cat-ion capacity" to 1.56 equivalents of base cat-ions reserves depleted per kg SO2. The characterisation factor for H2S is therefore 1.49*1.56 = 2.32 equivalents of base cat-ions reserves depleted per kg H2S.
|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|
|The system is global and the time period is 1990.|
|Characterisation Parameter||Category Indicator||Impact Indication Principle||Aspect||Substance||Quantity||Unit||Notes|
|CFactor||Base cat-ion capacity||EPS/2000||
|H2S||2.32||H+ mole equivalence/kg|