Digitale Medien
Oxford, UK
:
Blackwell Publishing Ltd
Journal of fish biology
16 (1980), S. 0
ISSN:
1095-8649
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Biologie
Notizen:
Fish toxicity of etho-nonylphenol and of two non-ionic antifoam agents was tested using rainbow trout, Sulmo guirdneri, in 24 h tests. The surface tension of these three compounds was found to depend on concentration and ageing time of the test solutions. The toxicity of the surfactant was about twice as high as known values, with a LC50 of 8.5 mg/1 at 15°C. The addition of antifoam agents to the surfactant solutions further lowered the surface tension but did not alter substantially the fish toxicity of the surfactant. Contrary to expectation, the fish survived in concentrated antifoam solutions at surface tensions as low as 31 dyn/cm for more than 24 h without any apparent damage. The relevance of the surface tension regarding the fish toxicity of detergents in general is critically discussed.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1095-8649.1980.tb03735.x
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