The effects of central air conditioning on pollen, mold, and bacterial concentrations

Spiegelman, J; Friedman, Herman; Blumstein, George I.

doi:10.1016/0021-8707(63)90007-8

Cited by 15 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Outdoor rotorod samplers also appeared to have sufficient unfilled surface to accommodate more particulate. Spiegelman et al (1963) and Spiegelman & Friedman (1968) report pollen concentrations of over 5000 pollen grains/m3 air outside homes, but the highest pollen concentration obtained in our study was 186 grains/m3.…”

Section: Discussionmentioning

confidence: 66%

“…during the springtime) a comparatively small concentration of airborne pollen can be found within a house' using the same sampling technique. Spiegelman et al (1963) demonstrate that atmospheric pollen occurs in greatly reduced amounts indoors. They state that only 6% of outdoor atmospheric pollen concentrations were measured inside houses which did not possess central air conditioning.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A comparison of regional atmospheric pollen with pollen collected at and near homes

O'Rourke

Lebowitz

1984

Grana

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%

A comparison of regional atmospheric pollen with pollen collected at and near homes

O'Rourke

Lebowitz

1984

Grana

View full text Add to dashboard Cite

“…For example, during the peak flowering period for Betula, pollen concentrations indoors remained mostly at a level barely inducing reactions even in the most sensitive persons (Hugg and Rantio-Lehtimäki 2007). Measurements inside buildings have usually revealed concentrations 2-6% of the corresponding outdoor concentrations (Spiegelman et al 1963;Yankova 1991;Cariñanos et al 2004;Lee et al 2006;Hugg and Rantio-Lehtimäki 2007;Ishibashi et al 2008) but the average values have occasionally been as high as 30-53% (Stock and Morandi 1988;Sterling and Lewis 1998).…”

Section: Introductionmentioning

confidence: 94%

Intrusion of airborne pollen through open windows and doors

Jantunen

Saarinen

2009

Aerobiologia

View full text Add to dashboard Cite

The importance of the transport of pollen by air movement into houses was evaluated using six to eight simultaneously collecting rotorod-type samplers, creating either a sampler line from outdoors to inside the room, or a sampler grid inside a room. The number of incoming pollen grains was highly dependent on the outdoor concentration. The highest concentrations inside (1-2 m distance) and outside (1 m) the room were 600 and 3,250 grains/m 3 , respectively, in the Betula pollen season and 1,980 and 5,080 grains/m 3 in the Pinus season. The pollen concentration and the indoor/outdoor (I/O) ratio decreased as the distance from the ventilation opening increased. Inside the room at a distance of 1-2 m 28%, and at a distance of 3-5 m 12%, of the outside concentration was recorded. In the lower part of the opening the mean proportion was 63% and in the upper part of the opening it was 40%. Efficient ventilation with two open windows increased the I/O ratio and enabled the pollen to spread throughout the room. During the Pinus pollen season 3-35% of the outdoor concentration was simultaneously recorded at six locations inside the room with two open windows and only 0.1-3.6% with one open window. At the same point in the room the I/O ratio varied from\1 to 35%, depending on the sampling conditions. Only a minor effect on the I/O ratio was found between small and large ventilation windows and the door, although it was expected that more air and pollen grains would come indoors through a larger opening.

show abstract

“…The amount of ragweed pollen, as determined by gravity slide tests, present in the air of hospital rooms in Chicago, which had been fitted with one or other of two types of filter, varied between 2 and 3% of that outdoors (Unger & Myers, 1961). Air conditioning reduced the ragweed pollen content of a hospital room in Philadelphia to 2-5% of that outdoors and the addition of an air purifier made little difference; mould counts in an airconditioned room were 5-5% of those in a room with open windows, and again the presence or absence of an air purifier made no significant difference (Spiegelmann, Blumstein & Friedman, 1961;Spiegelman, Friedman & Blumstein, 1963). More ambitious claims made for other apparatus apparently await investigation.…”

Section: (A) In Houses and Hospitalsmentioning

confidence: 99%

Atmospheric pollen grains and spores in relation to allergy. II

Hyde¹

1973

Clin Experimental Allergy

View full text Add to dashboard Cite

The effects of central air conditioning on pollen, mold, and bacterial concentrations

Cited by 15 publications

References 6 publications

A comparison of regional atmospheric pollen with pollen collected at and near homes

A comparison of regional atmospheric pollen with pollen collected at and near homes

Intrusion of airborne pollen through open windows and doors

Atmospheric pollen grains and spores in relation to allergy. II

Contact Info

Product

Resources

About