Thirty subjects (17 female) were exposed for 5 hours to clean air at 5%, 15%, 25% and 35% RH at 22 deg.C. Another 30 subjects (15 female) were similarly exposed to air polluted by carpet and linoleum at 18, 22 and 26 deg.C with humidity 2.4 g/kg dry air (=15% RH at 22 deg.C), and at 22 deg.C, 35% RH. The subjects performed simulated office work throughout each exposure. Building Related Symptom (BRS) intensity was reported on visual-analogue scales. Tests of eye, nose and skin function were applied. In these short exposures subjective discomfort, though significantly increased by low humidity, was very moderate even at 5% RH. However, tear film quality as indicated by the Mucous Ferning Test deteriorated significantly at RH22 deg.C, significantly more rapid blink rates were observed at 5% than at 35% RH, and skin became significantly more dry at 15% than at 35% RH.
|Title of host publication||Proceedings of Indoor Air 2002|
|Publication status||Published - 2002|
|Event||9th International Conference on Indoor Air Quality and Climate - Monterey, CA, United States|
Duration: 30 Jun 2002 → 5 Jul 2002
Conference number: 9
|Conference||9th International Conference on Indoor Air Quality and Climate|
|Period||30/06/2002 → 05/07/2002|