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Environmental fate & pathways

Bioaccumulation: terrestrial

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Description of key information

While no experimental data are available for terrestrial bioaccumulation, current models are not applicable for compounds charged (ionized) at environmentally relevant pH. Therefore, the aquatic BCF is regarded as a reasonable estimate also for the terrestrial compartment.

Key value for chemical safety assessment

BCF (terrestrial species):
173 L/kg ww

Additional information

It is known from the literature that worms e.g. earthworm Eisenia fetida can metabolize xenobiotics like di-(2-ethylhexyl) phthalate enzymatically and with help of intestinal microorganisms (Albro et al, 1993). For 1-Hexadecanamine (C16 amine) and other primary alkylamines no measured rates for metabolic degradation in worms are available. In addition, a measured BCFworm does not exist as well. Only recently models for the estimation of bioaccumulation in terrestrial food-chain became available (e.g. Armitage & Gobas, 2007). But these models require Log Kow as well as a metabolic rate constant and therefore BCFworm for primary alkylamines cannot be estimated reliably. But it may be assumed that the BCFworm is similarly low as the BCFfish as the amines will most likely be also rapidly biodegraded by the worms as well as by the microorganism being present in the worm gut. Therefore, the BCF-value derived for the aquatic compartment is regarded to be a reasonable estimate also for the terrestrial compartment.