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Boese, Bruce L., Janet O. Lamberson, R. C. Swartz, Robert J. Ozretich, and Faith C. Cole. 1998. Photoinduced toxicity of PAHs and alkylated PAHs to a marine infaunal amphipod, Rhepoxynius abronius.  Archives of Environmental Contamination Toxicology 34:235-240.

The marine infaunal amphipod Rhepoxynius abornius was exposed in standard 10-day toxicity tests to sediments contaminated with parent of alkylated PAHs. After exposures, moralities (LC50 values) and the ability to rebury in control sediment (EC50 values) were determined. Survivors of these initial toxicity tests were then exposed to UV radiation in an environmental growth chamber for 1 h. The differences between EC50 values before and after UV exposure were used to assess the phototoxicity of the bioaccumulated contaminants. Contaminants with HMO-LUMO gap range varied with contaminants such that compounds varied with contaminants such that compounds with the lowest water solubility appeared to be relatively less phototoxic. This suggests that these compounds were not taken up in sufficient quantities to measure tissue residues in phytotoxicity experiments. In general, these results support the HOMO-LIMO gap model of photoinduced toxicity.

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