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Nanoparticle release from self-cleaning cement

Date: 19/5/2017

New figures on how much titanium dioxide nanomaterial (TiO2-NM) could be released into the environment from photocatalytic cement - a new type of self-cleaning cement - have been presented in a recent study.

Based on experimental test results, researchers estimate that between 0.015% and 0.033% of photocatalytic cement’s TiO2-NM content could potentially escape over several years of cement use, depending on the level of cement porosity. The study could help inform environmental risk assessment of TiO2-NM, as well as safer design of nano-products (i.e. commercialised products incorporating nanomaterials).

Further details of the study have been published by the European Commission.

Reference: Bossa, N., et al. (2017). Environmental exposure to TiO2 nanomaterials incorporated in building material. Environmental Pollution, 220: 1160–1170. DOI:10.1016/j.envpol.2016.11.019.

Source: European Commission

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TiO2 is used in a range of consumer products, including sunscreens, cosmetics, and paints.