Journal article
Particle Concentrations in Occupational Settings Measured with a Nanoparticle Respiratory Deposition (NRD) Sampler
Annals of work exposures and health, Vol.62(6), pp.699-710
07/06/2018
DOI: 10.1093/annweh/wxy033
PMCID: PMC6775226
PMID: 29788211
Abstract
There is an increasing need to evaluate concentrations of nanoparticles in occupational settings due to their potential negative health effects. The Nanoparticle Respiratory Deposition (NRD) personal sampler was developed to collect nanoparticles separately from larger particles in the breathing zone of workers, while simultaneously providing a measure of respirable mass concentration. This study compared concentrations measured with the NRD sampler to those measured with a nano Micro Orifice Uniform-Deposit Impactor (nanoMOUDI) and respirable samplers in three workplaces. The NRD sampler performed well at two out of three locations, where over 90% of metal particles by mass were submicrometer particle size (a heavy vehicle machining and assembly facility and a shooting range). At the heavy vehicle facility, the mean metal mass concentration of particles collected on the diffusion stage of the NRD was 42.5 ± 10.0 µg/m3, within 5% of the nanoMOUDI concentration of 44.4 ± 7.4 µg/m3. At the shooting range, the mass concentration for the diffusion stage of the NRD was 5.9 µg/m3, 28% above the nanoMOUDI concentration of 4.6 µg/m3. In contrast, less favorable results were obtained at an iron foundry, where 95% of metal particles by mass were larger than 1 µm. The accuracy of nanoparticle collection by NRD diffusion stage may have been compromised by high concentrations of coarse particles at the iron foundry, where the NRD collected almost 5-fold more nanoparticle mass compared to the nanoMOUDI on one sampling day and was more than 40% different on other sampling days. The respirable concentrations measured by NRD samplers agreed well with concentrations measured by respirable samplers at all sampling locations. Overall, the NRD sampler accurately measured concentrations of nanoparticles in industrial environments when concentrations of large, coarse mode, particles were low.
Details
- Title: Subtitle
- Particle Concentrations in Occupational Settings Measured with a Nanoparticle Respiratory Deposition (NRD) Sampler
- Creators
- Larissa V Stebounova - Department of Occupational and Environmental Health, The University of Iowa, Iowa City, IA, USANatalia I Gonzalez-Pech - Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, USAJae Hong Park - School of Health Sciences, Purdue University, West Lafayette, IN, USAT Renee Anthony - Department of Occupational and Environmental Health, The University of Iowa, Iowa City, IA, USAVicki H Grassian - Department of Nanoengineering, Scripps Institution of Oceanography, University of California, La Jolla, CA, USAThomas M Peters - Department of Occupational and Environmental Health, The University of Iowa, Iowa City, IA, USA
- Resource Type
- Journal article
- Publication Details
- Annals of work exposures and health, Vol.62(6), pp.699-710
- Publisher
- England
- DOI
- 10.1093/annweh/wxy033
- PMID
- 29788211
- PMCID
- PMC6775226
- ISSN
- 2398-7308
- eISSN
- 2398-7316
- Grant note
- S10 RR018998 / NCRR NIH HHS P30 ES005605 / NIEHS NIH HHS R01 OH010238 / NIOSH CDC HHS R01 OH010295 / NIOSH CDC HHS
- Language
- English
- Date published
- 07/06/2018
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Occupational and Environmental Health; Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9983997307802771
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