← Reliability

EcoSpold 1 · Calculation comparison

BAFU 2025 v2, Heavy metals into air

A comparison of published impact results with VoLCA calculations from the same source data and the publisher’s impact factors. Points on the diagonal agree.

Engine version
volca 0.14.0 (bd7e64a, v0.14.0, linux)
Measured on
Comparison measurements and reference
DatabaseBAFU 2025 v2
Source formatEcoSpold 1
Impact method collectionEcological Scarcity 2021
Impact categoryHeavy metals into air
UnitUBP
Activities compared11,556
Median ratio (VoLCA / published)1.0000
Comparison band1%
Activities outside the band12
Share outside the band0.1%
VerdictAgrees: meets the agreement a release is held to
Points drawn1,936
Largest relative deviation+2.22%
Activity with largest deviationHeat, from natural gas {LU}
Published referenceBAFU-2025 version2_LCIA Results.xlsx
BAFU 2025 v2, Heavy metals into air
Each point is one activity: what BAFU 2025 v2 published for Heavy metals into air (UBP), against what VoLCA computes from the same EcoSpold 1 source under the publisher's own Ecological Scarcity 2021 factors. The black line is equality and the grey band is 1%. 11,556 activities were compared; 1,924 from inside the band are drawn, evenly spaced over the published value, plus the 12 outside it. Where several fall on one spot, at most three markers are drawn there, since a fourth would not darken it. Median ratio 1.0000, 0.10% outside the band. This meets the agreement a release is held to: at most 5% of activities outside the band and a median ratio inside it.