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Protection of Danio rerio from cadmium (Cd2+) toxicity using biological iron sulfide composites
Ecotoxicology and Environmental Safety ( IF 6.8 ) Pub Date : 2018-06-07 , DOI: 10.1016/j.ecoenv.2018.05.085
Wei Yuan , Yajie Liang , Xiang Xia , Yifei Xie , Shuhuan Lan , Xudong Li

Cadmium (Cd2+) pollution has become a global environmental problem. This study is the first to demonstrate the feasibility and effects of applying biological iron sulfide composites (BISC) for the protection of Cd2+ exposed fish, aiming at remediation of Cd2+ polluted waters during emergency pollution events. Experimental results indicate that BISC can remove Cd2+ efficiently and significantly protect Cd2+ exposed Danio rerio, by increasing its overall survival rates. Meanwhile, the protective effect of BISC is significantly enhanced with optimized BISC dosing ratios of 2.4 or more, as well as with more rapid onset of BISC dosing following Cd2+ exposure and in water with higher pH levels in the range of 6–8, with D. rerio survival rates increased by more than 90% (P = 0.05). Additionally, BISC confers advantages over SRB and combinations of its constituents, with effective removal of Cd2+ and increasing survival rates of Cd2+ exposed D. rerio.



中文翻译:

使用生物硫化铁复合材料保护Danio rerio免受镉(Cd 2+)毒性

镉(Cd 2+)污染已成为全球性的环境问题。这项研究首次证明了应用生物硫化铁复合物(BISC)来保护Cd 2+暴露鱼类的可行性和效果,旨在在紧急污染事件中修复Cd 2+污染水。实验结果表明,BISC可以消除镉2+高效显著保护镉2+暴露的斑马鱼,通过提高其生存率。同时,优化的BISC剂量比为2.4或更高,以及在Cd 2+之后BISC剂量更快起效,BISC的保护作用得到了显着增强。在pH值在6–8的范围内以及高浓度的水中,雷氏梭状芽孢杆菌的存活率提高了90%以上(P  = 0.05)。另外,BISC赋予了优于SRB及其成分组合的优势,可有效去除Cd 2+并提高Cd 2+暴露的D. rerio的存活率。

更新日期:2018-06-07
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