Template:Human exposure to fine particles: Difference between revisions

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Olennaisia tässä tarkastelussa ovat erityisesti pienhiukkaset, jotka joutuvat ilmaan savukaasujen mukana, ja kulkeutuvat ihmisten hengitysilmaan sekä sisä- että ulkotiloissa. Pienhiukkasia pidetään nykyään ilmansaasteista haitallisimpina terveydelle. Ihmisten keskimääräinen altistuminen pienhiukkasille on suuruusluokkaa 10 µg/m<sup>3</sup> (gramman miljoonasosaa kuutiometrissä ilmaa). Pienhiukkasaltistumisesta huomattava osa tulee kaukokulkeutumana satojen tai tuhansien kilometrien päästä. Suomalaisista lähteistä tärkeitä altistuksen aiheuttajia ovat pienpoltto ja liikenne.
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! Human exposure to fine particles
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| Fine particles are particles smaller than 2.5 µm of aerodynamic diameter. They are often produced by combustion processes, and they enter human breathing zone both outdoors and indoors. Fine particles are considered the most dangerous air pollution to health. The average exposure to fine particles in Finland is in the order of 10 µg/m<sup>3</sup> (one millionth of a gram in one cubic metre of air). A large fraction of fine particle exposure comes as long-range transport from hundreds or even thousands of kilometres away. The most important emission sources in Finland are domestic combustion and traffic.
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Latest revision as of 21:28, 26 February 2007

Human exposure to fine particles
Fine particles are particles smaller than 2.5 µm of aerodynamic diameter. They are often produced by combustion processes, and they enter human breathing zone both outdoors and indoors. Fine particles are considered the most dangerous air pollution to health. The average exposure to fine particles in Finland is in the order of 10 µg/m3 (one millionth of a gram in one cubic metre of air). A large fraction of fine particle exposure comes as long-range transport from hundreds or even thousands of kilometres away. The most important emission sources in Finland are domestic combustion and traffic.
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