Evaluation of Filter Effectiveness for Removing Airborne Chlordane in Crawl Space Houses at McConnel AFB, Kansas

摘要

A study to determine the effectiveness of polyurethane filters to remove chlordane from the air was performed in crawl space houses at McConnel AFB. The soil around and under the houses was treated with a 1% chlordane emulsion in 1974 and 1979. The ventilation ducts are located in the crawl space. Although the filter did adsorb chlordane, most airborne chlordane measurements in the study houses were above 5 micron/m3. The National Academy of Science has established 5 micron/m3 as a guideline for houses. A direct correlation between chlordane concentration and outside crawl space temperature was observed.