particulate matter

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particulate matter

n. Abbr. PM
Material suspended in the air in the form of minute solid particles or liquid droplets, especially when considered as an atmospheric pollutant.


A general term for organic air pollutants measuring less than 10 µm in diameter, which are linked to increased respiratory morbidity and mortality.

particulate matter



Small but discrete airborne or waterborne solids, such as fragments of ash, dust, pollen, or soot. They may be generated by the burning of fossil fuels, agricultural or construction projects, incineration, mining, and other natural and artificial processes. Higher levels of PM in air have been associated with increases in lung disease and mortality in exposed populations.
References in periodicals archive ?
Hence, a wide range of pollutants, in the form of particulate matter of varying sizes carrying different toxic metals, continuously enter the urban environment during construction activities [21].
Visibility is due to the light that reaches to the observer's eye but due to the particulate matter pollution scattering of light occurs and things become blurr to observor.
Keep track of particulate matter levels in your area by listening to local forecasts that include the EPA's Air Quality Index, or by visiting www.
It also includes for the first time emissions limits for fine particulate matter (solid particles and liquid droplets in the air that are less than 2.
The report recommended future monitoring studies that might include real-time, continuous particulate matter monitoring equipment.
a subsidiary of Panasonic Corporation, accelerates the oxidation of particulate matter and directly decomposes them without using platinum.
Engineering and environmental consulting services provider Providence Engineering and Environmental Group LLC said on Friday that it has been awarded a US patent for the Comprehensive Particulate Matter Measurement System (CPMMS) and the Methodology for its Use.
The study was done as part of a required review of the coarse particulate matter standards.
A sampling pump operating at 10 L/min draws particulate matter through the impactor; larger particles are captured on a disposable pre-oiled impaction substrate, while smaller particles collect on a 47 mm filter.
The Hiroshima-based company developed an original analytical method which demonstrated that the oxygen exchange characteristics of catalysts play an important role in accelerating the combustion of particulate matter.
A relatively small reduction in the annum average exposure to particulate matter with an aerodynamic diameter under 10 mcm ([PM.
In a press release sent out on 22 November, at the end of the 4th annual Commercial Vehicle Conference (members of the European Automobile Manufacturers' Association, ACEA), the commercial vehicle industry announces its intention to reduce, by 2012, NOx (nitrogen oxide) emissions by a further 80% and particulate matter by 50% compared to the current air pollution control standards for trucks in the EU.

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