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A wind tunnel test of newly developed personal bioaerosol samplers.

Authors
Su-WC; Tolchinsky-AD; Sigaev-VI; Cheng-YS
Source
J Air Waste Manage Assoc 2012 Jul; 62(7):828-837
NIOSHTIC No.
20041283
Abstract
In this study the performance of two newly developed personal bioaerosol samplers was evaluated. The two test samplers are cyclone-based personal samplers that incorporate a recirculating liquid film. The performance evaluations focused on the physical efficiencies that a personal bioaerosol sampler could provide, including aspiration, collection, and capture efficiencies. The evaluation tests were carried out in a wind tunnel, and the test personal samplers were mounted on the chest of a full-size manikin placed in the test chamber of the wind tunnel. Monodisperse fluorescent aerosols ranging from 0.5 to 20 microm were used to challenge the samplers. Two wind speeds of 0.5 and 2.0 m/sec were employed as the test wind speeds in this study. The test results indicated that the aspiration efficiency of the two test samplers closely agreed with the ACGIH inhalable convention within the size range of the test aerosols. The aspiration efficiency was found to be independent of the sampling orientation. The collection efficiency acquired from these two samplers showed that the 50% cutoff diameters were both around 0.6 microm. However the wall loss of these two test samplers increased as the aerosol size increased, and the wall loss of PAS-4 was considerably higher than that of PAS-5, especially in the aerosol size larger than 5 microm, which resulted in PAS-4 having a relatively lower capture efficiency than PAS-5. Overall, the PAS-5 is considered a better personal bioaerosol sampler than the PAS-4.
Keywords
Samplers; Aerosols; Microorganisms; Air-monitoring; Airborne-particles; Health-hazards; Exposure-levels; Respiratory-irritants; Respiratory-system-disorders; Respiration; Environmental-health; Environmental-exposure; Inhalants; Inhalation-studies; Analytical-processes; Monitoring-systems
Contact
Wei-Chung Su, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr. SE, Albuquerque, NM 87108
CODEN
AIWAE2
Publication Date
20120701
Document Type
Journal Article
Email Address
wsu@LRRI.org
Funding Type
Grant
Fiscal Year
2012
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-008913; Grant-Number-R01-OH-009801; B08292012
Issue of Publication
7
ISSN
1096-2247
Source Name
Journal of the Air and Waste Management Association
State
NM
Performing Organization
Lovelace Biomedical & Environmental Research, Albuquerque, New Mexico
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