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| See the main page of this assessment: [[Hämeenkyrö MSWI risk assessment: General]] | | See the main page of this assessment: [[Hämeenkyrö MSWI risk assessment: General]] |
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| ===Intake fraction for PM<sub>2.5</sub> emissions from Hämeenkyrö===
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| {{var
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| |Name = Intake fraction for PM<sub>2.5</sub> emissions from Hämeenkyrö
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| |Focus = Intake fraction for PM<sub>2.5</sub> emissions from Hämeenkyrö
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| |Scope = Emission from a high stack in Hämeenkyrö, exposed population anywhere in Europe. Exposure within one month from the emission.
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| |Description = Intake fraction (iF) means the fraction of an emission that is finally inhaled or ingested by a target population. There are several studies about estimates of iF for primary fine particles. These are often in the order of one in a million; values are higher for traffic than for other sources. Tainio and coworkers have estimated iFs for Finnish emissions derived from different source categories, including energy production plants.
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| Fine particles travel in the atmosphere for several days or weeks, and several hundred or thousand kilometres from the source. Therefore, most of the exposure occurs far from the source, unless the exposure very near (less than 100 m) is very intensive. In the case of a MSWI with a high stack, the exposure very near the source is negligible. This is especially true for secondary particles that only form in the atmosphere during several hours or days.
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| |Inputs =
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| |Index = Particle type
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| |Definition =
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| |Unit = -
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| |Result = Different particle types:
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| *0.6*10<sup>-6</sup> (primary particles)
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| *less clear but probably lower, maybe in the order of 0.1--0.5*10<sup>-6</sup> (secondary particles)
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| |References = Tainio et al., Kopra project. Fine-loppuseminaari 3/2006.
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| }}
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Revision as of 22:48, 29 December 2006