Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg
Engineered nanomaterials (ENMs) refer to a relatively novel class of materials that are increasingly prevalent in various consumer products and industrial applications - most notably for their superlative physicochemical properties when compared with conventional materials. However, consumer product...
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sg-ntu-dr.10356-1615052022-09-06T04:38:36Z Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg Ahamed, Ashiq Liang, Lili Lee, Ming Yang Bobacka, Johan Lisak, Grzegorz School of Civil and Environmental Engineering Interdisciplinary Graduate School (IGS) Asian School of the Environment Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Engineering::Environmental engineering Nanomaterials Nanoparticles Engineered nanomaterials (ENMs) refer to a relatively novel class of materials that are increasingly prevalent in various consumer products and industrial applications - most notably for their superlative physicochemical properties when compared with conventional materials. However, consumer products inevitably degrade over the course of their lifetime, releasing ENMs into the environment. These ENMs undergo physicochemical transformations and subsequently accumulate in the environment, possibly leading to various toxic effects. As a result, a significant number of studies have focused on identifying the possible transformations and environmental risks of ENMs, with the objective of ensuring a safe and responsible application of ENMs in consumer products. This review aims to consolidate the results from previous studies related to each stage of the pathway of ENMs from being embodied in a product to disintegration/transformation in the environment. The scope of this work was defined to include the five most prevalent ENMs based on recent projected production market data, namely: nTiO2, nSiO2, nZnO, carbon nanotubes, and nAg. The review focuses on: (i) models developed to estimate environmental concentrations of ENMs; (ii) the possible physicochemical transformations; (iii) cytotoxicity and genotoxicity effects specific to each ENM selected; and (iv) a discussion to identify potential gaps in the studies conducted and recommend areas where further investigation is warranted. Economic Development Board (EDB) Nanyang Technological University The authors would like to acknowledge the Nanyang Environment and Water Research Institute, Nanyang Technological University (Singapore), and Economic Development Board - Singapore for the financial support of this research. 2022-09-06T04:38:36Z 2022-09-06T04:38:36Z 2021 Journal Article Ahamed, A., Liang, L., Lee, M. Y., Bobacka, J. & Lisak, G. (2021). Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg. Journal of Hazardous Materials, 404(Part A), 124107-. https://dx.doi.org/10.1016/j.jhazmat.2020.124107 0304-3894 https://hdl.handle.net/10356/161505 10.1016/j.jhazmat.2020.124107 33035908 2-s2.0-85092108243 Part A 404 124107 en Journal of Hazardous Materials © 2020 Elsevier B.V. All rights reserved. |
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Engineering::Environmental engineering Nanomaterials Nanoparticles Ahamed, Ashiq Liang, Lili Lee, Ming Yang Bobacka, Johan Lisak, Grzegorz Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg |
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Engineered nanomaterials (ENMs) refer to a relatively novel class of materials that are increasingly prevalent in various consumer products and industrial applications - most notably for their superlative physicochemical properties when compared with conventional materials. However, consumer products inevitably degrade over the course of their lifetime, releasing ENMs into the environment. These ENMs undergo physicochemical transformations and subsequently accumulate in the environment, possibly leading to various toxic effects. As a result, a significant number of studies have focused on identifying the possible transformations and environmental risks of ENMs, with the objective of ensuring a safe and responsible application of ENMs in consumer products. This review aims to consolidate the results from previous studies related to each stage of the pathway of ENMs from being embodied in a product to disintegration/transformation in the environment. The scope of this work was defined to include the five most prevalent ENMs based on recent projected production market data, namely: nTiO2, nSiO2, nZnO, carbon nanotubes, and nAg. The review focuses on: (i) models developed to estimate environmental concentrations of ENMs; (ii) the possible physicochemical transformations; (iii) cytotoxicity and genotoxicity effects specific to each ENM selected; and (iv) a discussion to identify potential gaps in the studies conducted and recommend areas where further investigation is warranted. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Ahamed, Ashiq Liang, Lili Lee, Ming Yang Bobacka, Johan Lisak, Grzegorz |
format |
Article |
author |
Ahamed, Ashiq Liang, Lili Lee, Ming Yang Bobacka, Johan Lisak, Grzegorz |
author_sort |
Ahamed, Ashiq |
title |
Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg |
title_short |
Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg |
title_full |
Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg |
title_fullStr |
Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg |
title_full_unstemmed |
Too small to matter? Physicochemical transformation and toxicity of engineered nTiO₂, nSiO₂, nZnO, carbon nanotubes, and nAg |
title_sort |
too small to matter? physicochemical transformation and toxicity of engineered ntio₂, nsio₂, nzno, carbon nanotubes, and nag |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/161505 |
_version_ |
1744365370996686848 |