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MAP20071019974Linnainmaa, M.Effect of ventilation on ammonia levels in cowhouses / M. Linnainmaa, K. Louhelainen, T. EskelinenSumario: The effect of ventilation on concentrations of ammonia in typical Finnish cowhouses was investigated. Temperature, relative humidity, and concentration of carbon dioxide also were measured. A tracer-gas technique and multipoint equipment measured ventilation. Samples for airborne ammonia were collected in impinger flasks and analyzed by a gas-specific electrodeEn: American Industrial Hygiene Association journal. - Fairfax, Virginia. - Vol. 54, nº 11, November 1993 ; p. 678-6821. Higiene industrial. 2. Contaminantes químicos. 3. Sustancias tóxicas y peligrosas. 4. Amoníaco. 5. Ventilación. 6. Granjas. I. Louhelainen, K.. II. Eskelinen, T.. III. Title. IV. Título: American Industrial Hygiene Association journal.