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Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements

Nanomaterial particles exhibit a wide range of sizes through the formation of agglomerates/aggregates. To assess nanomaterial exposure in the workplace, accurate measurements of particle concentration and size distribution are needed. In this study, we evaluated the performance of two recently comme...

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Autores principales: YAMADA, Maromu, TAKAYA, Mitsutoshi, OGURA, Isamu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Institute of Occupational Safety and Health, Japan 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4667041/
https://www.ncbi.nlm.nih.gov/pubmed/26320727
http://dx.doi.org/10.2486/indhealth.2014-0243
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author YAMADA, Maromu
TAKAYA, Mitsutoshi
OGURA, Isamu
author_facet YAMADA, Maromu
TAKAYA, Mitsutoshi
OGURA, Isamu
author_sort YAMADA, Maromu
collection PubMed
description Nanomaterial particles exhibit a wide range of sizes through the formation of agglomerates/aggregates. To assess nanomaterial exposure in the workplace, accurate measurements of particle concentration and size distribution are needed. In this study, we evaluated the performance of two recently commercialized instruments: a portable scanning mobility particle sizer (SMPS) (NanoScan, TSI Inc.), which measures particle size distribution between 10 and 420 nm and an optical particle sizer (OPS, TSI Inc.), which measures particle size distribution between 300 and 10,000 nm. We compared the data measured by these instruments to conventional instruments (i.e., a widely used laboratory SMPS and an optical particle counter (OPC)) using nano-TiO(2) powder as test aerosol particles. The results showed obvious differences in the size distributions between the new and old SMPSs. A possible reason for the differences is that the cyclone inlet of the new SMPS (NanoScan) acted as a disperser of the weakly agglomerated particles and consequently the concentration increased through the breakup of the agglomerates. On the other hand, the particle concentration and size distributions measured by the OPS were similar to the OPC. When indoor aerosol particles were measured, the size distribution measured by the NanoScan was similar to the laboratory SMPS.
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spelling pubmed-46670412015-12-15 Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements YAMADA, Maromu TAKAYA, Mitsutoshi OGURA, Isamu Ind Health Original Article Nanomaterial particles exhibit a wide range of sizes through the formation of agglomerates/aggregates. To assess nanomaterial exposure in the workplace, accurate measurements of particle concentration and size distribution are needed. In this study, we evaluated the performance of two recently commercialized instruments: a portable scanning mobility particle sizer (SMPS) (NanoScan, TSI Inc.), which measures particle size distribution between 10 and 420 nm and an optical particle sizer (OPS, TSI Inc.), which measures particle size distribution between 300 and 10,000 nm. We compared the data measured by these instruments to conventional instruments (i.e., a widely used laboratory SMPS and an optical particle counter (OPC)) using nano-TiO(2) powder as test aerosol particles. The results showed obvious differences in the size distributions between the new and old SMPSs. A possible reason for the differences is that the cyclone inlet of the new SMPS (NanoScan) acted as a disperser of the weakly agglomerated particles and consequently the concentration increased through the breakup of the agglomerates. On the other hand, the particle concentration and size distributions measured by the OPS were similar to the OPC. When indoor aerosol particles were measured, the size distribution measured by the NanoScan was similar to the laboratory SMPS. National Institute of Occupational Safety and Health, Japan 2015-08-28 2015-11 /pmc/articles/PMC4667041/ /pubmed/26320727 http://dx.doi.org/10.2486/indhealth.2014-0243 Text en ©2015 National Institute of Occupational Safety and Health http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License.
spellingShingle Original Article
YAMADA, Maromu
TAKAYA, Mitsutoshi
OGURA, Isamu
Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements
title Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements
title_full Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements
title_fullStr Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements
title_full_unstemmed Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements
title_short Performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements
title_sort performance evaluation of newly developed portable aerosol sizers used for nanomaterial aerosol measurements
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4667041/
https://www.ncbi.nlm.nih.gov/pubmed/26320727
http://dx.doi.org/10.2486/indhealth.2014-0243
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