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Number concentrations and size distributions of nanoparticles during the use of hand-tools in refurbishment activities

De Paoli, Fabricio, Agudelo-Castañeda, Dayana M., Teixeira, Elba C., Silva, Luis F.O. and Kumar, Prashant (2018) Number concentrations and size distributions of nanoparticles during the use of hand-tools in refurbishment activities Journal of Nanoparticle Research, 20 (264).

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Hand-tools, such as sledgehammer, are widely used in refurbishment activities, nonetheless there is very little knowledge on nanoparticle generation. We measured particle number size distributions (PSD) and concentrations (PNC) in the 10-420 nm using a NanoScan Scanning Mobility Particle Sizer (SMPS) during the use of hand-tools (i.e., sanding and removal of wall) in a real indoor refurbishment environment. Results indicated that refurbishment activities from removal of wall increased average PNCs by ~6 times over the background, while was ~1.5 times higher than sanding. Highest total PNC was 1.9 × 105 particles cm30 −3, that corresponded to removal of wall activities. For sanding activities, PNC was lower as the coat of the plaster was probably slightly wet. Moreover, comparison between the two principal activities showed a similar peak in the accumulation mode (~65 nm), with a monomodal pattern. Results suggest that removal of wall activities emitted nanoparticles with a 59% of contribution in the Aitken mode. According to these data, can be inferred that the application of hand-tools in refurbishment activities generates lower total PNC than using electromechanical equipment. This study may contribute to our understanding of nanoparticle generation in refurbishment activities

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
De Paoli, Fabricio
Agudelo-Castañeda, Dayana M.
Teixeira, Elba C.
Silva, Luis F.O.
Date : October 2018
DOI : 10.1007/s11051-018-4368-2
Copyright Disclaimer : This is a post-peer-review, pre-copyedit version of an article published in Journal of Nanoparticle Research. The final authenticated version is available online at:
Uncontrolled Keywords : nanoparticles, refurbishment, particle number concentration, particle size distribution
Depositing User : Melanie Hughes
Date Deposited : 19 Sep 2018 14:30
Last Modified : 28 Sep 2019 02:08

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