College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China; National Engineering Research Center for Marine Aquaculture, Zhoushan 316022, China.
College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China.
Ecotoxicol Environ Saf. 2021 Jan 15;208:111677. doi: 10.1016/j.ecoenv.2020.111677. Epub 2020 Nov 25.
CHNHPbI 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 CHNHPbI perovskite on aquatic organisms. The results showed that, when the initial CHNHPbI perovskite level (CPL) was 40 mg L 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, the survival of D. magna would be notably threatened. Specifically, the 72 h EC-50 of CHNHPbI perovskite to S. obliquus was calculated as 37.21 mg L, and the 24 h LC-50 of this perovskite to D. magna adults and neonates were calculated as 37.53 mg L and 18.55 mg L, 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 CHNHPbI perovskite materials and their attractive application prospect, more attentions should be paid on their harmness to the environment.
CHNHPbI 是研究最多、最有前途的光电转换材料之一，具有大规模应用的潜力。然而，一旦它被排放到水生环境中，就会向水生生物释放出各种致命物质。在此，我们选择两种典型的水生污染指标，斜生栅藻（一种典型的浮游植物）和大型溞（一种典型的浮游动物），用于评估 CHNHPbI 钙钛矿对水生生物的急性影响。结果表明，当初始 CHNHPbI 钙钛矿水平（CPL）高于 40mg/L 时，斜生栅藻的生长会受到显著抑制，叶绿素含量和蛋白质含量明显下降。当 CPL 超过 5mg/L 时，大型溞的生存会受到明显威胁。具体来说，CHNHPbI 钙钛矿对斜生栅藻的 72hEC-50 计算值为 37.21mg/L，该钙钛矿对大型溞成体和幼体的 24hLC-50 分别计算为 37.53mg/L 和 18.55mg/L。此外，在这两项急性实验中，均观察到显著的溶液 pH 值下降和大量铅的生物积累，这可能是导致上述急性效应的主要原因。鉴于这些 CHNHPbI 钙钛矿材料的强烈急性效应及其诱人的应用前景，应更加关注它们对环境的危害。
