Today's diesel and natural gas engines emit similar amounts of sulfur, nitrogen and particulates, he said.
The graphite caught fire and burned for four days, releasing large amounts of contaminated particulates.
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And despite often startling levels of atmospheric particulates, the weather at 2, 240m stays blissfully crisp almost year round.
Pollution monitors often collect particulates that measure 10 micrometres across, known as PM10s, as well as the smaller PM2.5s.
Impurities are removed from the gas before it is burned, which results in lower emissions of sulfur dioxide, particulates and mercury.
It's called Make A Leap (Leap stands for Lowering Emissions and Particulates).
Heavy lorries are responsible for half the particulates emitted in London and Glasgow and a quarter of those in the West Midlands.
Washout by rain of radionuclides attached to particulates in the atmosphere is the main cause of dose to the public from nuclear reactors.
The Commission will need to ensure that the move towards diesel vehicles to improve efficiency does not lead to increased local air pollution from particulates.
Proponents point to the particulates released by coal-burning power plants, which, according to some estimates, cause 20, 000 premature deaths annually in the U.S. alone.
The usual suspects are particulates from diesel combustion and dust mites.
Deegan cautioned that workers in the disaster site should continue using dust masks and respirators and keeping the debris wet to reduce particulates in the air.
The Environmental Protection Agency (EPA) estimates idling trucks consume nearly one gallon of fuel per hour, while emitting nitrogen oxides and particulates, which contribute to smog.
Since the particulates travel great distances before they are washed out, even this small dose is not a function of distance from the power plant, but is randomized geographically.
Then there are others who have proposed radical geoengineering schemes, such as injecting tons of sunlight-reflecting particulates into the stratosphere as a way to address the threat of climate change.
Diesel exhaust emissions from lorries, which contain concentrations of particulates, are responsible for many of the 9, 000 deaths a year attributed to particulate emissions by the government's expert advisory body.
The tops of skyscrapers just a few blocks away, you could hardly see them today, and the latest readings show that there are very high levels of particulates in the air.
Coal handling certainly needs to be cleaned and cannot be allowed to pollute the air with particulates AT ALL. This will require technology, which we can perfect and then sell to other countries.
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For important pollutants monitored by the EPA, natural gas power cuts carbon monoxide emissions by 81%, nitrogen oxide emissions by 80%, sulfur dioxide emissions by 99%, mercury emissions by 100%, and particulates by 99%.
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One theory is that a growing mass of particulates, such as coal dust and biomass (from the widespread use of cow dung as fuel, for instance) in the air above India, now hinders rainfall.
Heavy goods vehicles make up less than 2% of all vehicles but they are responsible for a third of all nitrous-oxide emissions, nearly half of all particulates and a quarter of carbon dioxide generated by road transport.
Results of an animal study published by Ohio State University researcher Qinghua Sun in late 2010 revealed that early exposure to fine particulates led to the accumulation of abdominal fat and insulin resistance in mice even if they ate a normal diet.
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The architects worked with Pureti, a green-tech manufacturer (and winner of a 2011 "What's New" award from Popular Science), to develop a spray version of a titanium nano particle that, when activated by sunlight, oxidizes airborne particulates and converts them into water vapor and trace amounts of carbon dioxide.
But the traffic increase has slowed progress in reducing emissions further, and people in many areas still suffer from nitrogen-related air pollution, including small particulates that get sucked deep into the lungs, and ground-level ozone - a strongly irritant gas formed by the action of sunlight on reactive nitrogen.
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