The purpose of this study was to test the following hypotheses : (1) an air quality control strategy can be directly evaluated by measuring respiratory responses of a human subject ; and (2) improved air quality can improve human respiratory responses in swine building environments.
Twenty human subjects, between 18 and 35 yr of age, who had never been exposed to an enclosed swine environment before, were exposed to air qualities in a treatment room and a control room, in a swine building.
The treatment room was sprinkled with crude canola oil, which reduced the dust, endotoxin, ammonia and hydrogen sulphide by 93% (from 2.41 to 0.15 mg/m3), 89% (from 3984 to 452 EU/m3), 30% (from 26 to 18.3 p.p.m.) and 27% (from 0.38 to 0.27 p.p.m.), respectively, compared with the control room.
The control room was identical to the treatment room but had no oil sprinkling treatment.
Each subject spent 5 h in each room.
They were scheduled to do a bicycle exercise that was intended to simulate the barn workers'workload.
Shift changes in forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and white blood count (WBC) of the subjects between the treatment and the control were all significantly different (p<0.03).
Shift changes of FEV1 were - 1.94% for the treatment and - 9.93% for the control.
Shift changes of WBC were 6.35 count/mul for the treatment and 8.78 count/mul for the control. (...)
Mots-clés Pascal : Aspersion, Contrôle qualité, Dépoussiérage, Modalité réponse, Aigu, Qualité air, Respiration, Respirométrie, Air empoussiéré, Porcherie, Homme, Huile colza double zéro, Etude expérimentale, Etude méthode, Exposition professionnelle, Hygiène travail, Pollution air, Pollution intérieur, Installation agricole, Installation élevage, Bétail, Porcin, Artiodactyla, Ungulata, Mammalia, Vertebrata, Evaluation stratégie, TRAVAILLEUR AGRICOLE
Mots-clés Pascal anglais : Sprinkling, Quality control, Dust removal, Response modality, Acute, Air quality, Respiration, Respirometry, Dusty air, Pig barn, Human, Canola oil, Experimental study, Method study, Occupational exposure, Occupational hygiene, Air pollution, Indoor pollution, Agricultural facility, Livestock farm, Livestock, Swine, Artiodactyla, Ungulata, Mammalia, Vertebrata, strategy evaluation, AGRICULTURAL WORKERS
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0000258
Code Inist : 001D16C06. Création : 31/05/1999.