By World Health Organization
This publication provides revised guide values for the 4 most typical air toxins - particulate topic, ozone, nitrogen dioxide and sulfur dioxide - in line with a contemporary evaluation of the amassed medical facts. the explanation for choice of each one guide price is supported through a synthesis of data rising from learn at the future health results of every pollutant. accordingly, those guidance now additionally follow globally. they are often learn along side Air caliber directions for Europe, 2d variation, that's nonetheless the authority on instruction values for all different air pollution.
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Additional info for Air Quality Guidelines: Global Update 2005
Air Quality Expert Group. Particulate matter in the United Kingdom. London, Department of Environment, Food and Rural Affairs, 2005. 8. Thomas SB, Harrison RM. Human health impacts of air pollution emission from transport. In: Hester RE, Harrison RM, eds. Issues in environmental science & technology, Vol. 20. Cambridge, Royal Society of Chemistry, 2004. 9. Goodwin JWL et al. UK emissions of air pollutants 1970 to 2000. National Atmospheric Emissions Inventory, 2002. 10. Goodwin J, Mareckova K. Emissions of atmospheric pollutants in Europe, 1990–1999.
9); Goodwin & Mareckova (10); US Environmental Protection Agency (11); European Environment Agency (12); Gurjar et al. (13). b c National inventories are also valuable in the following ways. • They illustrate the relative importance of different source categories. For example, Fig. 2 shows national emission inventories for the United Kingdom for nitrogen oxides, sulfur dioxide, ammonia and non-methane VOC for 2001, showing widely different source profiles. Such information is useful in comparing the emissions between different countries.
In some cities in the north-western corner of the Russian Federation, close to large primary smelters, daily concentrations of sulfur dioxide exceed 1000 μg/m3 (50,51). Nitrogen dioxide, a problem related mainly to mobile sources The principal sources of nitrogen dioxide are traffic and to a lesser extent industry, shipping and households. High nitrogen dioxide levels, combined with ultrafine particles and other oxidants, have become one of the major air pollution problems in urban areas all over the world.