Toxicity of Ordnance Wastes in Aquatic Environments
Quarterly progress rept. no. 4,
CALIFORNIA UNIV OAKLAND NAVAL BIOSCIENCES LAB
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Bioassay toxicity testing was completed on non-biodegraded picric acid, Otto fuel and Noset A using Daphnia sp. and a fish species. The compounds tested were of relatively low toxicity compared to many industrial compounds such as pesticides, poly-chlorinated biphenyls, and some heavy metals. The LC50 48 for Daphnia was approximately 65 ppm in picric acid, about 200 ppm in Otto fuel and about 600 ppm in Noset A. For sticklebackfish average LC5096 values were 76, 26, and 236 ppm respectively. Based on the fish numbers and pervious algal toxicity tests in this research, preliminary effluent guidelines are recommended as follows Picric acid should follow local effluent standards for phenols eg. 0.5 mll as in some California areas. Otto fuel and Noset A levels around 0.5 mgl and 30mgl appear to be reasonable until further testing is completed on the toxicity of bio-degradation products of these materials. Guidelines for fuels should specify, however, that the fuels be in true aqueous solution, or very finely dispersed, rather than being in insoluble globular forms in effluent streams.
- Stress Physiology
- Biological Oceanography
- Water Pollution and Control