Effect of Air Transport Through Mold Contaminated Ductwork.
Morse, R., Zehnter, D.
2003 AIHCe 2003, Dallas Texas ?Podium 111, Poestenkill, NY
http://www.aiha.org/aihce03/handouts/po111haas_files/frame.htm
Morse, R., Zehnter, D., (2003), "Effect of Air Transport Through Mold Contaminated Ductwork.", AIHCe 2003, Dallas Texas ?Podium 111, Poestenkill, NY.
Abstract:
Supply air ductwork frequently becomes contaminated with mold and desiccated cellular material from mold due to improper operation of HVAC equipment. The authors measured the airborne spore levels of air entering a contaminated ductwork system, and then conducted parallel sampling of the air that had passed through the ductwork. The intent of this sampling was to determine if the spores or cellular debris from the mold contamination were picked up from the duct wall and transported to the building environment by the airstream in the duct. Typically, dirt in ductwork will remain on the walls of the duct and will not be picked up by the airstream in the duct. It is for this reason that the EPA recommends against duct cleaning unless there is mold in the ducts. This sampling was conducted to see if the same principle applies to ductwork. Air-O-Cell cassettes were used for the sampling so that both mold spores and cellular debris could be enumerated.
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