| toxicity to freshwater organisms from oils and oil spill chemical treatments in laboratory microcosms. | toxicity and temporal changes in toxicity of freshwater-marsh-microcosms containing south louisiana crude (slc) or diesel fuel and treated with a cleaner or dispersant, were investigated using chironomus tentans, daphnia pulex, and oryzias latipes. bioassays used microcosm water (for d. pulex and o. latipes) or soil slurry (for c. tentans) taken 1,7, 31, and 186 days after treatment. slc was less toxic than diesel, chemical additives enhanced oil toxicity, the dispersant was more toxic than the ... | 2003 | 12531308 |