1. INDOOR AIR QUALITY IN HOSPITALS

6. Indoor air pollutants,sources&health effects

11. Exposure limits Compounds Exposure limits Halogenated TLV (NIOSH): anaesthetic agents 8-h TWA: 2 ppm without concomitant N2O exposure 0.5 ppm with concomitant N2O exposure Nitrous oxide TLV for hospital environments (NIOSH): 8-h TWA: 25 ppm (40 mg/m3) Formaldehyde 8-h TWA: 0.75 ppm (0.94 mg/m3) 15-min STEL: 2 ppm (2.5 mg/m3) Glutaraldehyde TLV:0.2 ppm (0.82 mg/m3) (ceiling level) Ethylene oxide 8-h TWA: 1 ppm 15-min STEL: 5 ppm Action level 8-h TWA: 0.5 ppm

12. Halothane 50 ppm ACGIH 8-h TLV-TWA 2 ppm NIOSH 60-min REL-C Enflurane 75 ppm ACGIH 8-h TLV-TWA 2 ppm NIOSH 60-min REL-C Methoxyflurane 2 ppm NIOSH 15-min REL-C carbon dioxide 1000 ppm ASHRAE Std 62-1989 8-h TLV-TWA 5000- 9000 ACGIH 15min TLV-TWA carbon monoxide 9 ppm ASHRAE Std 62-1989 8-h TLV-TWA 25 ppm ACGIH 8-h TLV-TWA Nitrogen dioxide 3 ppm or 5.6 mg/m (8-hr) ASHRAE Sulpur dioxide 2 ppm or 5.2 mg/m (8-hr) ASHRAE