Toxic Effects of 2, 2 ', 4, 4 '- tetrabromodiphenyl ether (BDE-47) on Dicrateria inornata

[摘要] In this paper, we studied the toxicity of different concentrations of 2, 2', 4, 4'- tetrabromodiphenyl ether (BDE-47) on Dicrateria inornata. The results showed that the 96 h EC50 value of BDE-47 compound was 165 μg•L-1. By studying the changes of photosynthetic pigments and chlorophyll fluorescence characteristics, the toxicity mechanism of BDE-47 was studied. The results showed that BDE-47 with low concentration (25 ∼ 50 μg•L-1) had an induced effect on photosynthetic pigment content, and the BDE-47 with high concentration (100 ∼ 200 μg•L-1) had a significant inhibitory effect on photosynthetic pigment content. BDE-47 has inhibitory effect on the fluorescence characteristics of the flagellates, and the inhibitory effect increases with the increase of concentration.

[发布机构] Institute of 0ceanographic Instrmentation, Qilu University of Technology, Shandong Academy of Sciences, Japan^1;Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, United States^2;Engineering College, Ocean University of China, No.238 Songling Road, Laoshan District, Qingdao City, Shandong Province; 266100, China^3

[效力级别] 经济学

[关键词] Chlorophyll fluorescence;Fluorescence characteristics;Inhibitory effect;Low concentrations;Photosynthetic pigment contents;Photosynthetic pigments;Toxic effect;Toxicity mechanisms