Journal article
A Simple and Disposable Sampler for Inhalable Aerosol
The Annals of occupational hygiene, Vol.60(2), pp.150-160
03/2016
DOI: 10.1093/annhyg/mev065
PMCID: PMC4763335
PMID: 26467335
Abstract
The state-of-the-art for personal sampling for inhalable aerosol hazards is constrained by issues of sampler cost and complexity; these issues have limited the adoption and use of some samplers by practicing hygienists. Thus, despite the known health effects of inhalable aerosol hazards, personal exposures are routinely assessed for only a small fraction of the at-risk workforce. To address the limitations of current technologies for inhalable aerosol sampling, a disposable inhalable aerosol sampler was developed and evaluated in the laboratory. The new sampler is designed to be less expensive and simpler to use than existing technologies. The sampler incorporates a lightweight internal capsule fused to the sampling filter. This capsule-filter assembly allows for the inclusion of particles deposited on the internal walls and inlet, thus minimizing the need to wash or wipe the interior sampling cassette when conducting gravimetric analyses. Sampling efficiency and wall losses were tested in a low-velocity wind tunnel with particles ranging from 9.5 to 89.5 μm. The results were compared to the proposed low-velocity inhalability criterion as well as published data on the IOM sampler. Filter weight stability and time-to-equilibrium were evaluated as these factors affect the practicality of a design. Preliminary testing of the new sampler showed good agreement with both the IOM and the proposed low-velocity inhalability curve. The capsule and filter assemblies reached equilibrium within 25h of manufacturing when conditioned at elevated temperatures. After reaching equilibrium, the capsule-filter assemblies were stable within 0.01mg.
Details
- Title: Subtitle
- A Simple and Disposable Sampler for Inhalable Aerosol
- Creators
- Christian L'Orange - 1.Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80526, USAKimberly Anderson - 1.Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80526, USADarrah Sleeth - 2.Department of Family and Preventive Medicine, University of Utah, Salt Lake City, UT 84108, USAT Renée Anthony - 3.Department of Occupational and Environmental Health, University of Iowa, 145 Riverside Drive, Iowa City, IA 52242, USAJohn Volckens - 1.Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80526, USA; john.volckens@colostate.edu
- Resource Type
- Journal article
- Publication Details
- The Annals of occupational hygiene, Vol.60(2), pp.150-160
- Publisher
- England
- DOI
- 10.1093/annhyg/mev065
- PMID
- 26467335
- PMCID
- PMC4763335
- ISSN
- 0003-4878
- eISSN
- 1475-3162
- Grant note
- R01OH010295 / NIOSH CDC HHS R01 OH010295 / NIOSH CDC HHS
- Language
- English
- Date published
- 03/2016
- Academic Unit
- Occupational and Environmental Health
- Record Identifier
- 9983997317702771
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