Evaluation of nanoparticle emission for TiO2 nanopowder coating materials

Hsu, Li-Yeh; Chein, Hung Min

doi:10.1007/978-1-4020-5859-2_15

Cited by 16 publications

(15 citation statements)

References 17 publications

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“…For polymer and wood samples the emissions decreased significantly after 60 and 90 min, respectively. For the tile sample the release rate continued to increase after 2 h of testing, and tile was shown to have the highest emissions in comparison to coated polymer and wood (Hsu and Chein, 2007). However, this study did not address the presence of ENM and composition of the released particles.…”

Section: Pc9a: Coatings and Paintsmentioning

confidence: 88%

“…Another release scenario addressing ENM release from paints and coatings is sanding and abrasion processes, which are more relevant for inhalation exposure assessment Hsu and Chein (2007) conducted a study to investigate release of TiO 2 NPs from surface coatings on polymer, wood and tile. The experiment took place in a simulation box, where materials were exposed to UV lamps, a fan and rubber knife to simulate sunlight, wind and human contact, respectively.…”

Section: Pc9a: Coatings and Paintsmentioning

confidence: 99%

“…g/g. For instance, they might report the particle number released per volume from a given paint or coating (Le Bihan et al, 2013;Vorbau et al, 2009a;Guiot et al, 2009;Gomez et al, 2014;Koponen et al, 2011;Sachse et al, 2012b;Sachse et al, 2013;Hsu and Chein, 2007), but not the mass of the material released (C inh [mg/m 3 ]) that one would need in order to use the equations for inhalation exposure assessment. When data is lacking, the R.15 guidance document suggests using the worst case scenario, assuming that 100% of the substance is released into air.…”

Section: Applying Reach Algorithms To Enm Release Literaturementioning

confidence: 99%

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Release of nanomaterials from solid nanocomposites and consumer exposure assessment – a forward-looking review

Mackevica

Hansen

2016

Nanotoxicology

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The European chemical legislation requires manufacturers and importers of chemicals to do consumer exposure assessment when the chemical has certain hazards associated to it (e.g. explosive, carcinogenicity, hazardous to the aquatic environment), but the question is how this obligation can be met in light of the scientific uncertainty and technical challenges related to exposure assessment of nanomaterials. In this paper, we investigate to what extent the information and data in the literature can be used to perform consumer exposure assessment according to the REACH requirements and we identify and discuss the key data needs and provide recommendations for consumer exposure assessment of nanomaterials. In total, we identified 76 studies of relevance. Most studies have analyzed the release of Ag and TiO 2 from textiles and paints, and CNT and SiO 2 from nanocomposites. Less than half of the studies report their findings in a format that can be used for exposure assessment under REACH, and most do not include characterization of the released particles. Although inhalation, dermal and oral exposures can be derived using the guidelines on how to complete consumer exposure assessments under REACH, it is clear that the equations are not developed to take the unique properties of nanomaterials into consideration.Future research is therefore needed on developing more generalized methods for representing nanomaterial release from different product groups at relevant environmental conditions. This includes improving the analytical methods for determining nanomaterial alteration and transformation, as well as 2 quantification, which could subsequently lead to more nano-specific consumer exposure assessment models.

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Section: Pc9a: Coatings and Paintsmentioning

confidence: 88%

Section: Pc9a: Coatings and Paintsmentioning

confidence: 99%

Section: Applying Reach Algorithms To Enm Release Literaturementioning

confidence: 99%

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Release of nanomaterials from solid nanocomposites and consumer exposure assessment – a forward-looking review

Mackevica

Hansen

2016

Nanotoxicology

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“…Examples include changes in Ag speciation in textiles [55] and release from textiles into water [56,57], washing liquid [13], sweat [58], and washing machines [59]. Also, different studies have been published on abrasion of particles from coatings [48,49,60] or textiles [61]. One major conclusion of all these studies is that the vast majority of the released particles are large agglomerates containing PM-ENM and PW-ENM, but also that single, dispersed PW-ENM can be found.…”

Section: Release and Alteration Of Enmmentioning

confidence: 99%

Potential scenarios for nanomaterial release and subsequent alteration in the environment

Nowack¹,

Ranville²,

Diamond³

et al. 2011

Enviro Toxic and Chemistry

533

353

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Abstract-The risks associated with exposure to engineered nanomaterials (ENM) will be determined in part by the processes that control their environmental fate and transformation. These processes act not only on ENM that might be released directly into the environment, but more importantly also on ENM in consumer products and those that have been released from the product. The environmental fate and transformation are likely to differ significantly for each of these cases. The ENM released from actual direct use or from nanomaterial-containing products are much more relevant for ecotoxicological studies and risk assessment than pristine ENM. Released ENM may have a greater or lesser environmental impact than the starting materials, depending on the transformation reactions and the material. Almost nothing is known about the environmental behavior and the effects of released and transformed ENM, although these are the materials that are actually present in the environment. Further research is needed to determine whether the release and transformation processes result in a similar or more diverse set of ENM and ultimately how this affects environmental behavior. This article addresses these questions, using four hypothetical case studies that cover a wide range of ENM, their direct use or product applications, and their likely fate in the environment. Furthermore, a more definitive classification scheme for ENM should be adopted that reflects their surface condition, which is a result of both industrial and environmental processes acting on the ENM. The authors conclude that it is not possible to assess the risks associated with the use of ENM by investigating only the pristine form of the ENM, without considering alterations and transformation processes. Environ. Toxicol. Chem. 2012;31:50-59. # 2011 SETAC

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“…The release of nanoparticles into environmental matrices could occur during different stages of their life cycles [8,9]. Therefore, considerable efforts should be made to assess the toxicity of nanoparticles, first on humans and then-though no less important-on the environment.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Environmental Performance of TiO2 Nanoparticles Coated Self-Cleaning Float Glass

et al. 2017

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Abstract:In recent years, superhydrophilic and photocatalytic self-cleaning nanocoatings have been widely used in the easy-to-clean surfaces field. In the building sector, self-cleaning glass was one of the first nanocoating applications. These products are based on the photocatalytic property of a thin layer of titanium dioxide (TiO 2 ) nanoparticles deposited on the surface of any kind of common glass. When exposed to UV radiation, TiO 2 nanoparticles react with the oxygen and water molecules adsorbed on their surface to produce radicals leading to oxidative species. These species are able to reduce or even eliminate airborne pollutants and organic substances deposited on the material's surface. To date, TiO 2 nanoparticles' benefits have been substantiated; however, their ecological and human health risks are still under analysis. The present work studies the ecodesign of the industrial scale-up of TiO 2 nanoparticles self-cleaning coated float glass production performed by the life cycle assessment (LCA) methodology and applies new human toxicity indicators to the impact assessment stage. Production, particularly the TiO 2 nanoparticle application, is the life cycle phase most contributing to the total damage. According to the ecodesign approach, the production choices carried out have exacerbated environmental burdens.

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Evaluation of nanoparticle emission for TiO2 nanopowder coating materials

Cited by 16 publications

References 17 publications

Release of nanomaterials from solid nanocomposites and consumer exposure assessment – a forward-looking review

Release of nanomaterials from solid nanocomposites and consumer exposure assessment – a forward-looking review

Potential scenarios for nanomaterial release and subsequent alteration in the environment

Assessment of Environmental Performance of TiO2 Nanoparticles Coated Self-Cleaning Float Glass

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