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Side-By-Side Comparison Of Three Sampling Methods For Aerosolized Endotoxin In A Wastewater Treatment Facility, Dale Stephenson, F. Derosso, Dean Lillquist, D. Greene, G. White

Dale J. Stephenson

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 quantity 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 …