Health Hazard Evaluation Report No. HETA 81-315-1227, Pennsylvania State University Dubois Campus, Dubois Pennsylvania

摘要

On July 7-8, 1981, the airborne concentrations of formaldehyde ranged from 0.01 to 0.10 ppm, lower than might be expected to cause significant irritant effects. Ten relative humidity (RH) readings ranged from 60 to 74% (58% outdoors). Formaldehyde was not detected in five samples of the insulation. One sample was analyzed for isocyanates and none was detected. During a second visit on September 22, 1981, a NIOSH physician interviewed 12 of the 25 employees present. Formaldehyde measurements were made February 24, 1982, after the air conditioning system was balanced. Also, a bulk sample of the plaster board was obtained for analysis of its formaldehyde content. Formaldehyde levels in both samples were less than 0.001 ppm (the lower limit of detection). Nine employees were interviewed; eight felt much better with fewer headaches, one felt fatigue in the afternoon.