Multivariate analysis of the exposure and hazard of ceria nanomaterials in indoor aquatic mesocosms,Environmental Science: Nano

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Multivariate analysis of the exposure and hazard of ceria nanomaterials in indoor aquatic mesocosms
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2020-04-30 , DOI: 10.1039/c9en01439j
Mohammad Nassar _{1,

2,

3,

4,

5} , Mélanie Auffan _{1,

2,

3,

4,

5} , Catherine Santaella _{2,

3,

6,

7,

8} , Armand Masion _{1,

2,

3,

4,

5} , Jérôme Rose _{1,

2,

3,

4,

5}

Affiliation

The vast diversity of applications using nanomaterials and enhanced physicochemical properties at the nanoscale have raised questions concerning their potential environmental risks. Assessing the risk of nanomaterials in a real ecosystem is extremely challenging because of the system complexity and the relevant environmental doses tested. To provide ultimate interpretations about nanomaterial risk assessment, we combined ceria nanomaterial behavior, fate and impact analysis within indoor aquatic mesocosms with multivariate analysis. Principal Component Analysis (PCA) showed that the exposure scenario to CeO₂ nanoparticles (NPs) constitutes the main parameter to consider while investigating the risk for a given ecosystem. Moreover, following single pulse dosing of CeO₂ NPs, the global response of the pond ecosystem was time dependent. However, multiple dosing contamination failed to significantly perturb the system over time. Finally, the NP surface coating was found to play a secondary role and to affect the global response of the pond ecosystem in the short term only.

中文翻译：

二氧化铈纳米材料在室内水生介体中的暴露和危害的多元分析

使用纳米材料的广泛应用和在纳米级增强的物理化学特性，引发了有关其潜在环境风险的问题。由于系统的复杂性和测试的相关环境剂量，评估真实生态系统中纳米材料的风险极具挑战性。为了提供有关纳米材料风险评估的最终解释，我们将室内水生介体中的氧化铈纳米材料行为，命运和影响分析与多变量分析相结合。主成分分析（PCA）表明，在调查给定生态系统的风险时，CeO ₂纳米颗粒（NPs）的暴露情况是要考虑的主要参数。此外，在单脉冲定量添加CeO _2之后NPs，池塘生态系统的全球响应是时间依赖性的。但是，随着时间的推移，多次加药污染并不能显着干扰系统。最后，发现NP表面涂层仅在短期内起次要作用并影响池塘生态系统的整体响应。

更新日期：2020-06-18

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