+1 vote

I have noticed a characterization factor too large for the Arsenic>emission to air, in detail it is 348000, larger then the emission in water, which is 951! I suppose there is a mistake. This happen for all the CML in the methods v2

Thank you

in openLCA by (620 points)
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by (20.2k points)
Hi and thanks for keeping your eyes open! Could you please add to your question
1) the impact category in which the factor is applied
2) A source which supports the impact factor that you suggest
by (620 points)
After vaius comparison: The simapro with the ecoinvent 3.4 reports same values
the simapro with the ecoinvent 3.3 reports more allined results (the relative values between arsein toxixity in water is higher in respect to the air)

This characterization factor is in CML-AI > Human toxicity.

also, in the case of CML-IA the Arsenic in air present characterization factors much higher then mercury in air. I don't know if this is due to the different unit (1,4DB eq vs CTU) but the CML factor are higher also in respect to the RECIPE which use the 1,4DB eq.
by (20.2k points)
Thanks for your hint. The CML CFs are available for download via https://www.universiteitleiden.nl/en/research/research-output/science/cml-ia-characterisation-factors#downloads

-> cmlia.zip (18.7 Mb)

The Excel file is quite comprehensive and I will take some time these days to check whether the values in our LCIA methods differ from those provided by CML.

1 Answer

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by (620 points)
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Thank you, now i have realised that the version present in the packet is quite old, now the CML is using the USETOX Cfs.
So the question is now pointless, I believe.