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Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

The log Kd for water is 3.27 (stdev 0.34) and the average Kd is 1862. The log Kd for soil is 1.57 (stdev 0.46) and the average Kd is 37.2.

Additional information

Two high quality studies have determined the partitioning of Pt between river water and suspended particulate matter. Both studies showed relatively consistent results for experiments performed in freshwaters, and similar partitioning was also observed in both estuarine and marine water in the key study (Turner et al., 2006; Cobelo-Garcia et al., 2008). A high quality study of the partitioning of platinum to two soils and one sediment provides information relevant to the soil compartment (Sako et al., 2009).

Biodegradation has not been assessed for the substance as a whole as this endpoint is not relevant for inorganics. However, biodegradation potential of the organic component of the substance has been assessed (Kuenemann et al, 1992). Results are reported in a published paper, and although there are some limitations with the reporting of method details the paper is considered to be suitable for use for assessing this endpoint. Monoethanolamine (2-aminoethanol) was found to be readily biodegradable as the pass criterion of >70% degradation was met with 97 and 92% degradation observed.

A hydrolysis study has not been conducted for this substance as it is not considered to be scientifically necessary.