Intake fraction for PM2.5 emissions from Hämeenkyrö

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Scope
Intake fraction for PM_2.5 emissions from Hämeenkyrö describes intake fraction for emission from a high stack in Hämeenkyrö, exposed population anywhere in Europe. Exposure within one month from the emission.

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.

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.

References:

• Tainio et al., Kopra project. Fine-loppuseminaari 3/2006.

Definition

Data

Different particle types:

• 0.6*10^-6 (primary particles)
• less clear but probably lower, maybe in the order of 0.1--0.5*10^-6 (secondary particles)

Unit

- (dimensionless)

Result

Different particle types:

• 0.6*10^-6 (primary particles)
• less clear but probably lower, maybe in the order of 0.1--0.5*10^-6 (secondary particles)