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Environmental fate & pathways

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The results of the available biodegradation studies (screening tests) are summarised below. Data indicate that tributylphosphate is readily biodegradable; one paper (Kawai et al, 1986) isolated and identified a bacterial strain (Pseudomonas diminuta) capable of degrading tributylphosphate.


 


 





































































Test



Time



Biodegradation



Reference



Activated sludge (MITI)



28d



77.1%



Kanne, 1985a



Activated sludge (closed bottle)



28d



92%



Kanne, 1985b



Activated sludge (OECD screening test)



28d



89%



Kanne, 1985c



Activated sludge (MITI)



14d



0-41%



CITI (1992)



Activated sludge (OECD screening test)



28d



90.8%



Saeger et al, 1979



River/sea water



3d



0-28%



Kondo et al, 1987



River/sea water



7-14d



0-100%



Hattori et al, 1981



Pseudomonas diminuta



43h



100%



Kawai et al, 1986



Activated sludge



48h



30-40%



Isikawa et al, 1985



100% following acclimatisation