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Effect of ventilation on ammonia levels in cowhouses

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      <subfield code="a">Linnainmaa, M.</subfield>
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      <subfield code="a">Effect of ventilation on ammonia levels in cowhouses</subfield>
      <subfield code="c">M. Linnainmaa, K. Louhelainen, T. Eskelinen</subfield>
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      <subfield code="a">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 electrode</subfield>
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      <subfield code="a">Contaminantes químicos</subfield>
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      <subfield code="a">Sustancias tóxicas y peligrosas</subfield>
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      <subfield code="0">MAPA20080545925</subfield>
      <subfield code="a">Amoníaco</subfield>
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      <subfield code="a">Ventilación</subfield>
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      <subfield code="a">Louhelainen, K.</subfield>
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      <subfield code="a">Eskelinen, T.</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="t">American Industrial Hygiene Association journal</subfield>
      <subfield code="d">Fairfax, Virginia</subfield>
      <subfield code="g">Vol. 54, nº 11, November 1993 ; p. 678-682</subfield>
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