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House dust collection efficiency of the high volume small surface sampler on worn carpets.

Authors
Svendsen-E; Thorne-P; O'Shaughnessy-P; Zimmerman-D; Reynolds-S
Source
J Occup Environ Hyg 2006 Jun; 3(6):334-341
NIOSHTIC No.
20035489
Abstract
The High Volume Small Surface Sampler (HVS3) is a dust-sampling vacuum that allows for set airflow and back pressure during sampling, increasing precision. Total dust collection efficiency of the HVS3 has been evaluated only on new carpets-not worn carpets. We performed a factorial study to assess the impact of carpet wear, dust deposition level, carpet type, and relative humidity during sampling on HVS3 collection efficiency. House dust was aerosolized in a 1-m3 exposure chamber and allowed to settle on test carpets and reference filters. Dust was embedded into the carpets and later extracted with the HVS3 under controlled environmental conditions according to established protocols. Overall collection efficiency was high, 88.3%. Collection efficiency was significantly higher at low relative humidity levels (30%) relative to high (75%) (p = < 0.0001), though differentially between cut-pile and closed-loop carpets. Collection efficiency of carpets with high wear was significantly lower than those with midlevel wear (p = 0.01). These results demonstrate that the design of the HVS3 partially corrects for differences in dust load and carpet type. However, collection efficiency of the HVS3 is affected by high levels of carpet wear and ambient humidity during sampling.
Keywords
Dust-analysis; Dust-collection; Dust-collectors; Dust-control; Dust-control-equipment; Dust-counters; Dust-exposure; Dust-extraction; Dust-inhalation; Dust-masks; Dust-measurement; Dust-particles; Dust-samplers; Dust-sampling; Dust-velocity; Dusts; Volumetric-analysis; Floors; Aerosol-particles; Aerosol-sampling; Aerosols; Exposure-assessment; Exposure-levels; Exposure-limits; Author Keywords: carpet wear; dust; HVS3; vacuum sampler
Contact
E. Svendsen, Department of Epidemiology and Biostatistics, University of South Carolina, 1600 Sumter Street, Columbia, SC 29208
CODEN
JOEHA2
Publication Date
20060601
Document Type
Journal Article
Email Address
svendsee@gwm.sc.edu
Funding Type
Cooperative Agreement
Fiscal Year
2006
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U50-OH-007545
Issue of Publication
6
ISSN
1545-9624
Source Name
Journal of Occupational and Environmental Hygiene
State
CO
Performing Organization
Colorado State University - Fort Collins
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