Particulate matter (PM) in the air can enter the human body, affbigbiglands.comting the cardiovascular system as well as other major organs. Chronic exposure leads lớn a number of health risks. The JRC và the World Health Organization (WHO) have sầu identified the main categories of PM in urban air in 51 different cities around the world. On average, traffic is the biggest source of air pollution, responsible for one quarter of particulate matter in the air.

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In order lớn reduce the negative sầu health impact of air pollution, it is important to lớn know its sources và quantity. Measurements of fine particles PM2.5 và PM10 serve sầu as indicators of air chất lượng. The rbigbiglands.comently published study shows, based on the available information, that traffic (25%), combustion & agriculture (22%), domestic fuel burning (20%), natural dust và salt (18%), and industrial activities (15%) are the main sources of particulate matter contributing lớn cities’ air pollution. However, there are significant differences between various regions of the world.


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Population-weighted averages for relative source contributions to total PM2.5 in urban sites.© EU, 2015
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Population-weighted averages for relative source contributions khổng lồ total PM10 in urban sites.© EU, 2015

Atmospheric processes that lead khổng lồ the formation of particles as a result of gaseous traffic, heating và agriculture emissions appear to be most considerable in North America, Western Europe, Turkey & the Republic of Korea. Domestic fuel burning dominates the contributions to lớn particulate matter in Eastern Europe và in many developing countries in Africa. In the developing countries, this source is likely lớn be associated with cooking, while in Eastern Europe the use of coal for heating seems khổng lồ be the most probable reason. Natural dust is the main source of PM10 in the Middle-East and Northern African countries, likely due to their vicinity lớn arid areas. Sea salternative text is the most important natural source of PM10 in north-western Europe.

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The database resulting from this study is published on the WHO trang web.

Background

According to lớn the WHO, in 2012 ambient air pollution contributed to lớn 6.7 % of all deaths worldwide. In particular, 16% of lung cancer deaths, 11% of chronic obstructive pulmonary disease deaths, & more than 20% of ischaemic heart disease and stroke are associated with ambient fine particulate matter. The bigbiglands.comonomic cost of the approximate 600 000 premature deaths & of the diseases caused by air pollution in the WHO European Region in 2010 has been estimated in triệu Euro 1.5 trillion.

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