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Side-by-side comparison of three sampling methods for aerosolized endotoxin in a wastewater treatment facility.

Authors
Stephenson-DJ; Lillquist-DR; DeRosso-FD; Greene-DD; White-G
Source
J Environ Health 2004 Nov; 67(4):16-19
NIOSHTIC No.
20037407
Abstract
Research studies have established the occurrence of adverse health effects in individuals exposed to organic dusts and water aerosols laden with endotoxin. To determine what exposure levels cause these health effects, it is necessary to quantify airborne endotoxin. Several scientific studies have demonstrated that the quantification of detectable endotoxin is affected by differences in sampling media, analytical method, and aerosol composition. The study reported here performed side-by-side endotoxin sampling using a liquid impinger, a glass fiber filter, and a polycarbonate filter in a wastewater treatment plant. Results show levels of detected endotoxin appear to be highest with the impinger. Coefficients of variation calculated for each sampling method show the glass fiber filter having the least variability when sampling was conducted at the highest endotoxin levels. Lastly, a Spearman rank order correlation test identified an apparent correlation between endotoxin levels obtained with the impinger and the glass fiber filter.
Keywords
Endotoxins; Organic-dusts; Aerosols; Analytical-methods; Sampling-methods; Impingers; Filter-materials; Filters; Filtration; Waste-treatment; Water-industry; Fibrous-glass
CODEN
JEVHAH
Publication Date
20041101
Document Type
Journal Article
Email Address
dalestephenson@boisestate.edu
Funding Type
Grant
Fiscal Year
2005
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-CCT-810426; Grant-Number-T42-OH-008414
Issue of Publication
4
ISSN
0022-0892
Source Name
Journal of Environmental Health
State
ID; UT
Performing Organization
Rocky Mountain Center for Occupational and Environmental Health, Department of Family & Preventive Medicine, University of Utah, Salt Lake City, Utah
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