Environmental risk assessment of engineered nano-SiO2 , nano iron oxides, nano-CeO2 , nano-Al2 O3 , and quantum dots

Environmental Toxicology and Chemistry
Yan Wang, Bernd Nowack

Abstract

Many research studies have endeavored to investigate the ecotoxicological hazards of engineered nanomaterials (ENMs). However, little is known regarding the actual environmental risks of ENMs, combining both hazard and exposure data. The aim of the present study was to quantify the environmental risks for nano-Al2 O3 , nano-SiO2 , nano iron oxides, nano-CeO2 , and quantum dots by comparing the predicted environmental concentrations (PECs) with the predicted-no-effect concentrations (PNECs). The PEC values of these 5 ENMs in freshwaters in 2020 for northern Europe and southeastern Europe were taken from a published dynamic probabilistic material flow analysis model. The PNEC values were calculated using probabilistic species sensitivity distribution (SSD). The order of the PNEC values was quantum dots < nano-CeO2  < nano iron oxides < nano-Al2 O3  < nano-SiO2 . The risks posed by these 5 ENMs were demonstrated to be in the reverse order: nano-Al2 O3  > nano-SiO2  > nano iron oxides > nano-CeO2  > quantum dots. However, all risk characterization values are 4 to 8 orders of magnitude lower than 1, and no risk was therefore predicted for any of the investigated ENMs at the estimated release level in 2020. Compared to static models,...Continue Reading

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Citations

Mar 30, 2019·Environmental Science and Pollution Research International·Vanessa Koehlé-DivoBénédicte Sohm
Sep 20, 2019·Integrated Environmental Assessment and Management·Henning WiggerVéronique Adam
Jan 11, 2020·Frontiers in Bioengineering and Biotechnology·Marina Hauser, Bernd Nowack
Nov 3, 2020·Environment International·Marina Hauser, Bernd Nowack
May 12, 2021·Journal of Applied Toxicology : JAT·Ying LiangMeng Tang
Jun 19, 2021·Environmental Toxicology and Pharmacology·Analía AleJimena Cazenave
Jul 3, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Quan XuJuncheng Wang
Oct 16, 2021·The Science of the Total Environment·Frida Book, Thomas Backhaus
Dec 23, 2021·Journal of Applied Toxicology : JAT·Yongshuai Yao, Meng Tang

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