Transcription of Chapter 3 Air quality standards
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Chapter 3 Air quality standards
Chapter 3 Air quality standards and objectivesAt a glanceAir quality limits and thresholds are fundamental to effective air quality management. Ambient air quality limits serve to indicate what levels of exposure to pollution are generally safe for most people, including the very young and the elderly, over their lifetimes. While the World Health Organization (WHO) provides scientific guidance to all countries on the levels of pollution that adversely affect human health, its work does not take into consideration the socio-economic conditions prevalent within any country. As a result, the WHO produces guidelines that a country can then use to inform the development of its own standards . The pollutants for which south Africa has set air quality limits include particulate matter, sulphur dioxide, nitrogen dioxide, carbon monoxide, lead, ozone, benzene, and the deposition of dust. The health impacts of the criteria pollutants, for which limits have been set, are briefly AIR quality LIMITS FOR CRITERIA POLLUTANTS.
ABBREVIATIONS: EC, European Commission; SANS, South African National Standard; SA standards (AQA), South African standards (Air Quality Act); UK, United Kingdom; US EPA, United States Environmental …
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