Porous polyurethane foam for use as a particle collection substrate in a nanoparticle respiratory deposition sampler

Levi W. D Mines; Jae Hong Park; Imali A Mudunkotuwa; T. Renée Anthony; Vicki H Grassian; Thomas M Peters

doi:10.1080/02786826.2016.1164828

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Porous polyurethane foam for use as a particle collection substrate in a nanoparticle respiratory deposition sampler

Journal article

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Porous polyurethane foam for use as a particle collection substrate in a nanoparticle respiratory deposition sampler

Levi W. D Mines, Jae Hong Park, Imali A Mudunkotuwa, T. Renée Anthony, Vicki H Grassian and Thomas M Peters

Aerosol science and technology, Vol.50(5), pp.497-506

05/03/2016

DOI: 10.1080/02786826.2016.1164828

PMCID: PMC5580938

PMID: 28867869

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Abstract

Porous polyurethane foam was evaluated to replace the eight nylon meshes used as a substrate to collect nanoparticles in the Nanoparticle Respiratory Deposition (NRD) sampler. Cylindrical (25 mm diameter by 40 mm deep) foam with 100 pores per inch was housed in a 25-mm-diameter conductive polypropylene cassette cowl compatible with the NRD sampler. Pristine foam and nylon meshes were evaluated for metals content via elemental analysis. The size-selective collection efficiency of the foam was evaluated using salt (NaCl) and metal fume aerosols in independent tests. Collection efficiencies were compared to the nanoparticulate matter (NPM) criterion and a semi-empirical model for foam. Changes in collection efficiency and pressure drop of the foam and nylon meshes were measured after loading with metal fume particles as measures of substrate performance. Substantially less titanium was found in the foam (0.173 µg sampler −1 ) compared to the nylon mesh (125 µg sampler −1 ), improving the detection capabilities of the NRD sampler for titanium dioxide particles. The foam collection efficiency was similar to that of the nylon meshes and the NPM criterion (R 2 = 0.98, for NaCl), although the semi-empirical model underestimated the experimental efficiency (R 2 = 0.38). The pressure drop across the foam was 8% that of the nylon meshes when pristine and changed minimally with metal fume loading (∼19 mg). In contrast, the pores of the nylon meshes clogged after loading with ∼1 mg metal fume. These results indicate that foam is a suitable substrate to collect metal (except for cadmium) nanoparticles in the NRD sampler. Copyright © 2016 American Association for Aerosol Research

Takafumi Seto

Details

Title: Subtitle: Porous polyurethane foam for use as a particle collection substrate in a nanoparticle respiratory deposition sampler
Creators: Levi W. D Mines - Department of Occupational and Environmental Health, University of Iowa
Jae Hong Park - Department of Occupational and Environmental Health, University of Iowa
Imali A Mudunkotuwa - Department of Chemistry, University of Iowa
T. Renée Anthony - Department of Occupational and Environmental Health, University of Iowa
Vicki H Grassian - Department of Chemistry, University of Iowa
Thomas M Peters - Department of Occupational and Environmental Health, University of Iowa
Resource Type: Journal article
Publication Details: Aerosol science and technology, Vol.50(5), pp.497-506
Publisher: Taylor & Francis
DOI: 10.1080/02786826.2016.1164828
PMID: 28867869
PMCID: PMC5580938
ISSN: 0278-6826
eISSN: 1521-7388
Language: English
Date published: 05/03/2016
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Occupational and Environmental Health; Chemistry; Chemical and Biochemical Engineering
Record Identifier: 9983997353002771

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