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  • toxics
  • Air toxics are generally more localized than the criteria pollutants and the highest levels are close to their sources. (iowadnr.gov)
  • Most air toxics originate from man-made sources, including cars and trucks, factories, power plants and refineries, as well as some building materials and cleaning solvents. (iowadnr.gov)
  • Major sources of air toxics are stationary sources that emit or have the potential to emit 10 tons or more per year of any one of the 188 air toxics listed in the 1990 Clean Air Act Amendments (Act), or 25 tons or more per year of combined air toxics. (ct.gov)
  • These sources emit air toxics through various means, including emissions stacks and vents, fugitive process emissions, equipment leaks, material transfer and handling, or accidental releases. (ct.gov)
  • Area sources of air toxics are stationary sources smaller than major sources, which emit less than 10 tons per year of any single air toxic or less than 25 tons per year of combined air toxics. (ct.gov)
  • Estimates from 1999 show that approximately 30% of air toxics are emitted from area sources. (ct.gov)
  • Natural sources of air toxics are diverse and numerous. (ct.gov)
  • For example, forest fires produce air toxics, such as particulates and volatile organic compounds. (ct.gov)
  • Some toxic air pollutants (e.g., mercury) are persistent bioaccumulative toxics, which means they are stored indefinitely in the body and increase over time. (4cleanair.org)
  • Sources - there are 187 chemicals on the U.S. EPA's list of air toxics, most of them originate from human-made sources, including mobile sources (cars, trucks, buses) and stationary sources (factories, refineries, power plants), as well as indoor sources (building materials and activities such as cleaning). (broward.org)
  • exposure
  • Because of widespread concern about the effects of the exposure of urban populations to a large number of air pollutants, a method allowing a quantitative evaluation of the number of excess cancer cases caused by individual substances is of great interest. (springer.com)
  • The authors cover physico-chemical fundamentals of organic pollutants, relevant definitions and terminology, emission sources, sampling techniques and instrumentation, exposure assessment as well as methods for control. (ebooks.com)
  • heavy metals
  • Indeed, Hajrudin Pasic, Khairul Alam and David Bayless recently patented a new type of membranewoven from carbon, silicon and other fibers and measuring only one to three millimeters thickthat captures fine air pollutants and heavy metals more cheaply and efficiently than conventional filters. (scientificamerican.com)
  • E-PRTR contains annual data for 91 pollutants including greenhouse gases, heavy metals, pesticides and dioxins covering 65 economic activities across Europe. (europa.eu)
  • criteria
  • In Massachusetts, the Department of Environmental Protection (MassDEP) is responsible for developing implementation plans outlining how all areas of the state will meet and maintain the federal standards for criteria air pollutants. (mass.gov)
  • arsenic
  • Arsenic in New Zealand's outdoor air comes largely from burning timber treated with the preservative copper-chromate-arsenic. (mfe.govt.nz)
  • vegetation
  • Pollinators like bees, butterflies and moths use their sense of smell to locate flowers from long distances, but we found that scent from neighboring vegetation, and even pollutants given off from vehicle exhaust, can disrupt the moth's behavior,' University of Washington biology professor Jeffrey Riffell said. (scientificamerican.com)
  • and 2) "secondary," are set at a level "requisite" to protect public welfare from "any known or anticipated effects associated with the pollutant in the ambient air," including effects on vegetation, crops, wildlife, buildings and national monuments and visibility. (4cleanair.org)
  • quality
  • MassDEP also enforces its own ambient air quality standards . (mass.gov)
  • Delhi and the National Capital Region (NCR) on Sunday witnessed "very poor" air quality with the minimum temperature recorded at 12.4 degrees Celsius, two notches below the season's average. (medindia.net)
  • The air-quality across the NCR was very poor, according to System of Air Quality and Weather Forecasting And Research. (medindia.net)
  • Poor air quality has been linked to health effects in everyone, especially infants, children, seniors and pets. (environmental-expert.com)
  • Thousands more people than previously thought are dying each year from the effect of poor air quality, including pollutants from everyday objects and appliances in their homes, the landmark new report is to claim. (telegraph.co.uk)
  • However, reduced airflow in a building can cause air quality problems in three ways. (tamu.edu)
  • EEA's public air quality database. (europa.eu)
  • This while government leaders and policy makers define and implement more effective regulatory policies to improve air quality. (scienceblog.com)
  • These programs include the National Ambient Air Quality Standards whose creation was aimed at preventing six air pollutants. (essaysprofessors.com)
  • The environmental aspects of shipping have perhaps mainly been an issue to people living close to major ports, but maritime organizations have for the past decade or so started to address the shipping industry's impact on air quality. (environmental-expert.com)
  • In addition to the key pollutants covered in this report, we have some background information on other pollutants that affect our air quality. (mfe.govt.nz)
  • However, the representativeness, and in some cases, the quality, of the available data does not allow us to draw firm conclusions on the state of these pollutants at the national level. (mfe.govt.nz)
  • The other pollutants are compared with the National Environmental Standards for Air Quality (NESAQ) and against the World Health Organization (WHO) guidelines where they differ. (mfe.govt.nz)
  • Some pollutants are compared with the Ministry for the Environment's Ambient Air Quality Guidelines when they are not included in the NESAQ or WHO guidelines. (mfe.govt.nz)
  • pungent
  • It is a major air pollutant that is colorless and has a pungent smell, released from the combustion of fossil fuels such as coal and oil, in different industries, and it is also a product of the burning fuels in automobiles released from the vehicular exhausts. (pakobserver.net)
  • found
  • The team found that as they circulated haze-polluted air through a cryogenic condenser, the finer particles stuck together in the condenser tube before dropping out by gravity, and emerging as clean air. (medindia.net)
  • adverse
  • U.S. EPA and Iowa DNR regulate 187 air pollutants known or suspected to cause cancer or other serious health effects such as reproductive effects or birth defects, or adverse environmental consequences. (iowadnr.gov)
  • These pollutants are responsible for a wide range of adverse health and environmental effects. (4cleanair.org)
  • Regulations
  • The proposed Multi-Sector Air Pollutants Regulations (MSAPR) will impose mandatory national performance standards on specific sector/equipment groups and establish consistent emissions limits for regulated industries across the country. (dieselnet.com)
  • legislation
  • The Government of Canada has proposed, for the first time, industrial air pollutant emission legislation for some sectors of the economy, including certain categories of stationary engines. (dieselnet.com)
  • substances
  • These pollutants are substances that cause or may cause cancer or other serious health effects, such as reproductive, birth or developmental defects, and neurological, cardiovascular and respiratory disease. (4cleanair.org)
  • amounts
  • Launched in November 2009, the E-PRTR website provides users with access to information from some 28,000 industrial facilities concerning the annual amounts of pollutants released to air, water and land, as well as off-site transfers of waste and of pollutants in waste water. (europa.eu)