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Acute effects of CH3NH3PbI3 perovskite on Scenedesmus obliquus and Daphnia magana in aquatic environment
Ecotoxicology and Environmental Safety ( IF 6.8 ) Pub Date : 2020-11-25 , DOI: 10.1016/j.ecoenv.2020.111677
Jun-Zhi Liu , Jia-Shun Yang , Ya-Ming Ge , Qiao Yang , Jing-Ya Sun , Xuan Yu

CH3NH3PbI3 is one of the most widely studied and most promising photoelectric conversion materials for large-scale application. However, once it is discharged into the aquatic environment, it will release a variety of lethal substances to the aquatic organisms. Herein, two typical aquatic pollution indicators, Scenedesmus obliquus (a typical phytoplankton) and Daphnia magna (a typical zooplankton), were used to assess the acute effects of CH3NH3PbI3 perovskite on aquatic organisms. The results showed that, when the initial CH3NH3PbI3 perovskite level (CPL) was 40 mg L−1 or higher, the growth of S. obliquus would be remarkably inhibited with significant decreases of chlorophyll content and protein content. And when the CPL was over 5 mg L−1, the survival of D. magna would be notably threatened. Specifically, the 72 h EC-50 of CH3NH3PbI3 perovskite to S. obliquus was calculated as 37.21 mg L−1, and the 24 h LC-50 of this perovskite to D. magna adults and neonates were calculated as 37.53 mg L−1 and 18.55 mg L−1, respectively. Moreover, remarkably solution pH declination and large amounts of lead bio-accumulation was observed in the both acute experiments, which could be the main reasons causing the above acute effects. Considering the strong acute effects of these CH3NH3PbI3 perovskite materials and their attractive application prospect, more attentions should be paid on their harmness to the environment.



中文翻译:

CH 3 NH 3 PbI 3钙钛矿对水生Scene水蚤的急性影响

CH 3 NH 3 PbI 3是用于大规模应用的最广泛研究和最有前途的光电转换材料之一。但是,一旦将其排放到水生环境中,它将向水生生物释放各种致死性物质。在此,使用两个典型的水生污染指标,(典型的浮游植物)和大水蚤(典型的浮游动物),来评估CH 3 NH 3 PbI 3钙钛矿对水生生物的急性影响。结果表明,当初始CH 3 NH 3 PbI 3为钙钛矿水平(CPL)为40 mg L -1或更高时,叶绿素含量和蛋白质含量显着降低,斜生链球菌的生长将受到显着抑制。并且当CPL超过5mg L -1时D.magna的存活将受到显着威胁。具体而言,计算到斜生链球菌的CH 3 NH 3 PbI 3钙钛矿的72 h EC - 50为37.21 mg L -1,并且该钙钛矿对大果念珠菌成人和新生儿的24 h LC-50计算为37.53。 mg L -1和18.55 mg L -1, 分别。此外,在这两个急性实验中均观察到溶液pH值明显下降和大量铅生物富集,这可能是导致上述急性效应的主要原因。考虑到这些CH 3 NH 3 PbI 3钙钛矿材料的强烈的急性作用及其诱人的应用前景,应更加关注它们对环境的危害。

更新日期:2020-11-25
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