<unk><unk>  2011 tropospheric column density. The EPA have some regulations and guidelines for monitoring<unk><unk>  levels. Historically, some states in the U.S including Chicago, Northeast corridor and L.A have had high levels of<unk><unk> . In 2006, the WHO estimated that over 2 million deaths result annually from air pollution in which<unk><unk>  constitute one of the pollutants. While over 50% of the disease that results from these pollutants are common in developing countries and the effects in developed countries is also significant. An EPA survey in the U.S. suggests that 16 percent of United States' housing units are sited close to an airport, highway or railroad increasing in the United States the exposure risk of approximately 48 million people. A feasibility study of the ozone formed from the oxidation of<unk><unk>  in ambient air reported by the WHO suggested that daily deaths of 1 to 2% is attributed to exposure to ozone concentration above 47.3 ppb and exposure above 75.7ppb is attributed to 3 to 5% increase in daily mortality. A level of 114 ppb was attributed to 5 to 9% increase daily mortality. Silo filler's disease is pervasive during the harvest seasons of food grains. In May 2015, the National Green Tribunal directed Delhi and other states in India to ban diesel vehicles over 10 years old as a measure to reduce<unk><unk>  emission that may result in<unk> . In 2008, the report of United Kingdom Committee on the Medical Effects of Air Pollutants (COMEAP) suggested that air pollution is the cause of about 29,000 deaths in UK. The WHO urban air quality database estimated Delhi's mean annual PM 10 levels in 2010 as 286 μg /m3 and London as 23 μg /m3. In 2014, the database estimated Delhi's annual mean PM 2.5 particulate matter levels in 2013 as 156 μg /m3 whereas, London have only 8 μg /m3 in 2010 but the<unk><unk>  in London breach the European Union's standard. In 2013, the annual mean<unk><unk>  level in London was estimated as 58 μg /m3 but the save and "threshold limit value" is 40 μg /m3. In March 2015, Brussels took the United Kingdom into court for breaching emissions limits of<unk><unk>  at its coal-fired Aberthaw power stations in Wales. The plant operated under a permit allowing emissions of 1200 mg/Nm3, which is more than twice the 5 mg/Nm3 limit specified in the EU's large combustion plant directive.
Nitrogen dioxide poisoning
Carbon monoxide poisoning
Chlorine gas poisoning
Organophosphate poisoning
Oxygen toxicity
Cyanide poisoning
Barbiturate overdose
Nitrogen narcosis