Acute Photoinduced Toxicity of Anthraquinones to the Crustacean Daphnia magna
蒽醌类化合物对大型蚤(Daphnia magna)的急性光致毒性研究

In order to study the acute photoinduced toxicity of anthraquinones, the 48 h acute immobilization toxicity of 20 anthraquinones to Daphnia magna was determined, under two different light/dark cycles, 14 h (light):10 h (dark), and sole dark. Daylight fluorescent lamp was employed to simulate sunlight. The effects of two solubilizing agents, DMSO and acetone, on the photoinduced toxicity were compared and the mechanism of the photoinduced toxicity was also discussed. The two co-solvents did not affect the photoinduced toxicity of the compounds. The photoinduced toxicity of the substituted anthraquinones depended on the number, position and electron-donating ability of the substituent groups to the parent structure of anthraquinone. The gap between the energy of the highest occupied molecular orbital and the lowest unoccupied molecular orbital was an indicator for the potential photoinduced toxicity of anthraquinones to Daphnia magna.