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A personal nanoparticle respiratory deposition (NRD) sampler.

Authors
Cena-LG; Anthony-TR; Peters-TM
Source
Environ Sci Technol 2011 Aug; 45(15):6483-6490
NIOSHTIC No.
20040102
Abstract
A lightweight (60 g), personal nanoparticle respiratory deposition (NRD) sampler was developed to selectively collect particles smaller than 300 nm similar to their typical deposition in the respiratory tract. The sampler operates at 2.5 Lpm and consists of a respirable cyclone fitted with an impactor and a diffusion stage containing mesh screens. The cut-point diameter of the impactor was determined to be 300 nm with a sharpness s = 1.53. The diffusion stage screens collect particles with an efficiency that matches the deposition efficiency of particles smaller than 300 nm in the respiratory tract. Impactor separation performance was unaffected by loading at typical workplace levels (p-value = 0.26). With chemical analysis of the diffusion media, the NRD sampler can be used to directly assess exposures to nanoparticles of a specific composition apart from other airborne particles. The pressure drop of the NRD sampler is sufficiently low to permit its operation with conventional, belt-mounted sampling pumps.
Keywords
Nanotechnology; Particulates; Particulate-dust; Particulate-sampling-methods; Sampling; Sampling-equipment; Monitors; Respiration; Respirable-dust; Respiratory-irritants; Air-samples; Air-sampling; Air-sampling-equipment; Air-sampling-techniques; Airborne-dusts; Airborne-fibers; Airborne-particles
Contact
Thomas M. Peters, Department of Occupational and Environmental Health, The University of Iowa, Iowa City, IA
CODEN
ESTHAG
Publication Date
20110801
Document Type
Journal Article
Email Address
thomas-m-peters@uiowa.edu
Funding Type
Grant
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008491; Grant-Number-R21-OH-009920; B01182012
Issue of Publication
15
ISSN
0013-936X
Source Name
Environmental Science and Technology
State
IA
Performing Organization
University of Iowa
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