EU-SICHERHEITSDATENBLATT Dieselkraftstoff ... - Schmierstoffe

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The model predictions include median lethal loadings (LL50) and no observed effect
loadings (NOEL) through the use of an acute to chronic ratio (McGrath et al 2004;
McGrath and Di Toro 2009). The ACR was applied to the critical body burdens at the time
of the calculations so that NOEL predictions are still affected by the inherent solubilities of
these complex petroleum substances and are not simply scaled from the acute toxicity
predictions. Toxicity endpoints are reported for several standard test organisms (fish, algae,
daphnid, protozoa), which are relatively sensitive and are considered representative of other
sensitive aquatic organisms. These predictions, therefore, provide a reasonable initial basis
for evaluating aquatic hazards of the petroleum substances in this study (Redman et al 2007;
Di Toro et al 2000; McGrath et al 2004). Based on the initial validation (HydroQual 2009)
the predictions and are considered conservative.
The term “loading” refers to the insoluble nature of the petroleum substances as well
as the test methods used to generate exposure media (e.g., water accommodated fractions).
Due to solubility limitations some petroleum substances are classified as Non-Toxic. This is
presented in the report as the LL50 or NOEL >1000 mg/L, which is the maximum loading
evaluated in PETROTOX (HydroQual 2009). In these cases the maximum Toxic Unit (TU)
reached under the simulation conditions is reported for relative comparisons.