Journal article
A Personal Nanoparticle Respiratory Deposition (NRD) Sampler
Environmental science & technology, Vol.45(15), pp.6483-6490
08/01/2011
DOI: 10.1021/es201379a
PMCID: PMC4751023
PMID: 21718022
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 σ = 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.
Details
- Title: Subtitle
- A Personal Nanoparticle Respiratory Deposition (NRD) Sampler
- Creators
- Lorenzo G CenaT. Renée AnthonyThomas M Peters
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.45(15), pp.6483-6490
- Publisher
- American Chemical Society
- DOI
- 10.1021/es201379a
- PMID
- 21718022
- PMCID
- PMC4751023
- ISSN
- 0013-936X
- eISSN
- 1520-5851
- Language
- English
- Date published
- 08/01/2011
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Occupational and Environmental Health
- Record Identifier
- 9983997458502771
Metrics
26 Record Views