The word "particulate" is correct and usable in written English.
It can be used to describe something that is made up of distinct particles. For example: "The air in this factory is filled with particulate matter from the machinery."
Compared to burning coal, natural gas emits just 25% of the carbon dioxide and releases no nitrous and sulphur oxides or particulate matter.
This is because the Minnesota model assumes for all cars that present and future emission-control technologies will be more widely used in 2020, especially particulate filters which have a marked effect on cleaning diesel exhausts.
Using satellite data the boffins worked out, for the first time, what global exposures were to fine particulate matter (known as PM2.5) from 2000 to 2012.
The plan will raise electricity prices and kill some jobs, but it will also save lives, most immediately by cutting particulate pollution.It is far from the best policy.
This is true in theory, but rarely in practice.Nor is it reassuring that no measurements are released at all of ozone or PM2.5 (very fine particulate matter, and the most hazardous), although officials say they would like to start monitoring both next year.
To advocates' disgust, a state pollution-reduction plan allows for a 12% increase in "point" (industrial) emissions by 2019, while calling for big cuts from vehicles, small businesses and homes.Yet industrial sources account for only about 15% of particulate emissions; vehicles are responsible for over half.
Since ships burn bunker oil, the dirtiest of fuels, that means not just more CO2 but also more "particulate matter", which, according to a controversial paper published in 2007, is already responsible each year for about 60,000 deaths from chest and lung diseases, including cancer.
Coupled with recent advances in direct injection ("common rail") engines that improve combustion, and durable particulate traps to capture tiny but dangerous particles of soot, this new fuel is cleaning up emissions and transforming the prospects for diesels in America.
They also need particulate traps to capture the soot.
By one estimate air pollution in Delhi alone now kills 10,500 people a year, through respiratory illness, by triggering heart or asthma attacks, or by particulate matter said to cause cancer.The poorest are the most vulnerable, especially those who live or work on the streets.
The particulate content of the atmosphere was falling, and the world began to heat up once more.
