EU-SICHERHEITSDATENBLATT Dieselkraftstoff ... - Schmierstoffe

Figure 31. Experimentally derived fish BCFs for mono-naphthenic hydrocarbons. B –
2000, vB - 5000
10
MN Dietary BMF
BMF = 1
Experimental BMF
1
0.1
0.01
5 10 15
Carbon Number
Figure 32. Experimentally derived fish BMFs for mono-naphthenic hydrocarbons from
dietary bioaccumulation studies
4.4 Di-Naphthenic hydrocarbons
Regression-based BCF predictions for di-naphthenic hydrocarbons (Figure 33) are above
the B criterion of 2000 for structures ranging from C14 to C20. When biotransformation
is incorporated to the model, BCF predictions for structures with carbon numbers ranging
from C13 to C18 are above 2000 (Figure 34). Dietary BCF values are above the B
criterion for many of the tested structures, which range from C9 to C16 (Table 14). One
of the structures, trans-decalin, has a calculated dietary BCF value of more than 5000 but
several aqueous BCF values for cis-decalin clearly show the true BCF is below 5000.
Experimental BMF factors, derived from the dietary data (Figure 36), are always below 1
indicating these substances are not expected to biomagnify. It can be concluded that
based on the available data, some C10 to C18 di-naphthenic hydrocarbons likely meet the
bioaccumulative (B), but not very bioaccumulative (vB) criterion.
38