EU-SICHERHEITSDATENBLATT Dieselkraftstoff ... - Schmierstoffe

100.0
Half-life predicted (days)
10.0
Freshwater
P criterion
Marine Water
1.0
1.0 10.0 100.0
Half-life observed (days)
Figure 16. BioHCwin (Y-axis) vs. experimental half-lives (X-axis) for di-naphthenic
hydrocarbons
3.9 Naphthenic Di-Aromatics
The BioHCwin model predicts that half-lives for naphthenic di-aromatic hydrocarbons
above C14 will be higher than 60 days (Figure 17). In several cases, there are data for
multiple hydrocarbons with the same number of carbons. Experimental freshwater and
marine half-lives for C16 naphthenic di-aromatics (Table 9) were higher than the
persistence criterion for two of the three tested structures, but experimental values were
much lower than BioHCwin predicted half-lives. Based on model predictions and due to
the limited experimental data available (Figure 18), it is concluded that structures at or
above C14 may have half-lives above the persistence criterion.
1000000.0
bioHCwin half-life (days)
100000.0
10000.0
1000.0
100.0
10.0
1.0
0 5 10 15 20 25 30 35 40
Carbon number
60 d half-life
Figure 17. Half-life predictions for naphthenic di-aromatic hydrocarbons using the US
EPA model BioHCwin
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