Acute Toxicity Effects of 2,2',4,4',5,5'-Hexabromodiphenyl Ether on Chlorella vulgaris

• 作者: Chao SONG Jiazhang CHEN Limin FAN Liping QIU Pao XU Shunlong MENG Xi Chen Yao ZHENG
• 来源期刊: 农业生物技术:英文版
• 学科: 化学
• 关键词: 2 2' 4 4' 5 5'-Hexabromodiphenyl ether Acute toxicity Chlorella vulgaris 96 h EC(50)
• 年，卷（期）: nyswjsywb_2020,（3）
• 页码范围: 115-118
• 页数: 4页
• 分类号: O63

摘要

[Objectives] This study was conducted to investigate the toxic effects of 2,2',4,4',5,5'-hexabromobiphenyl ether on Chlorella vulgaris and provide basic data for protecting aquatic ecosystems. [Methods] The acute toxicity effects of 2,2',4,4',5,5'-hexabromodiphenyl ether on C. vulgaris was investigated by the semi-static water contacting acute toxicity method. [Results] The 48,72 and 96 h-EC(50) of 2,2',4,4',5,5'-hexabromodiphenyl ether to C. vulgaris were23. 58,18. 71 and 14. 75 μg/L,respectively,and the safe concentration of 2,2',4,4',5,5'-hexabromodiphenyl ether to C. vulgaris was 1. 475μg/L. For the water solubility of 2,2',4,4',5,5'-hexabromodiphenyl ether is extremely low( 1 μg/L),it could not cause the acute poisoning death of C. vulgaris. According to the grading standards for the assessment of the toxicity on algae,2,2',4,4',5,5'-hexabromodiphenyl ether was extremely highly toxic to C. vulgaris. [Conclusions]The extremely high toxicity of 2,2',4,4',5,5'-hexabromodiphenyl ether to C. vulgaris shows that it has heavy potential harm to aquatic ecosystems and the maximum residue limit standards of 2,2',4,4',5,5'-hexabromodiphenyl ether in water should be formulated to better protect aquatic ecosystems.