Tiny pieces of solid or liquid matter, such as soot, dust, fumes, or mist.
Carbon particles formed by partial oxidation and reduction of hydrocarbon fuels. Also included are quantities of trace metal oxides and nitrates originating from engine wear, component degradation and inorganic fuel additives. In the transportation sector, particulates are emitted mainly from diesel engines.
Solids or liquids from smoke, dust, or other substances that can hang in the air and remain as separate particles for long periods of time. These are often the result of burning gas, wood, and other fuels. The smallest particulates can be inhaled and cause serious breathing problems, especially for children, people with asthma, and the elderly.
Airborne solid impurities such as those present in gaseous emissions (sodium sulphate, lime, calcium carbonate, soot)
Generic term used interchangeably with ?dust? to describe fine solid matter capable of entering atmospheric suspension.
fine solid particles which remain individually dispersed in gases and stack emissions. game : chess acronym
Solid minute particles in the air.
Carbon particles formed by partial oxidation and reduction of the hydrocarbon fuel. Also included are trace quantities of metal oxides and nitrides, originating from engine wear, component degradation, and inorganic fuel additives.
Sand, silt, or clay soil particles and organic matter found in stormwater.
Tiny particles in the air such as soot, dirt, dust, fumes and smoke coming from industry, cars and wood burning.
are very small pieces of matter, such as a particle of dust or a fiber.
Particulates can be suspended solids or liquids that include dust from automobile and truck brake linings, road grit, ash from factory smokestacks, some from home chimneys and aerosols. Particulates reduce visibility and can cause lung and eye damage, especially when combined with other pollutants such as sulfur oxides (SO) and nitrous oxides (NO). Many people with respiratory problems are unaware their breathing problems can result from particulate pollution.
Airborne particles found in the environment are pollen, dust, bacteria, miscellaneous living and dead organisms, skin flakes, hair, clothing lint, cosmetics, respiratory gases and bacteria from perspiration.
coarse and fine particles of organic or inorganic substances present in the atmosphere.
Tiny particles of solid or liquid suspended in the air. Of concern are those of 10 microns or less (PM10) in diameter, which behave like a gas entering the lungs and cause respiratory problems. Also referred to as "fine particles".
Minute separate particles of material, typically airborne.
Solid particles and liquid droplets small enough to become airborne.
Solid particles suspended in a gas or liquid.
Fine liquid or solid particles such as dust, smoke, mist, fumes and fog found in air and emissions.
solid particles in the air, such as soot, ash or wind-borne soil particles.
A collective term for very small solid and/or liquid particles found in the Atmosphere. Particle sizes range from 0.005-500 micrometers. Particulates can be generated by natural processes but more commonly result from human activities, as from operational diesel engines, power plants, and from other industrial processes. Particulates have been linked to a number of significant health problems, including respiratory afflictions and heart disease.
Microscopic particles of dust found in the air. Industrial activities including electricity generation are the focus of proposals to limit particulates, which are said to cause health and environmental problems.
The Environmental Protection Agency has set National Ambient Air Quality Standards for particulates. One, in effect since 1987, regulates particles smaller than 10 microns in diameter (PM10); the other, promulgated in 1997, would regulate particles smaller than 2.5 microns in diameter (PM2.5) — but court challenges are delaying its implementation. These are of interest to agriculture because dust from tillage and smoke from burning field residues may contribute to pollutant levels. Whether controls might be imposed on agricultural activities depends largely on how each state chooses to meet the standards, however.
Particulates are criteria pollutants that include dust, dirt, soot, smoke and other miniscule solids released into the air and can affect heart and respiratory health. Particulates can be composed of many different chemicals. Their human sources vary but come largely from construction activities like road building. Particulates can also form when emissions from fossil fuels react with sunlight and water vapor to create solid particles in the air.
A fine liquid or solid particle such as dust, smoke, mist, fumes, or smog, found in air or emissions.
Minute, solid, airborne particles that result from biomass combustion.
Fine particles such as dust, smoke, fumes, or smog found in emissions and the air.
small particles of material, which have been found to have significant negative impacts on health
very small pieces of solid or liquid matter, such as soot, dust, smoke or mist
Fine dust and soot particles from natural and human-made sources such as industrial activity, fossil fuel combustion, agriculture, fires etc.
Solids sufficiently small to be susceptible to being windblown or suspended in air or gas.
Atmospheric particles made up of a wide range of natural materials (e.g., pollen, dust, resins), combined with manmade pollutants (e.g., smoke particles, metallic ash); in sufficient concentrations, particulates can be a respiratory irritant.
Small airborne particles found in indoor and outdoor environments. These particles include fibrous materials, solid-state semi-volatile organic compounds, and biological materials.
dust, soot, smoke and other suspended matter; can be respiratory irritants. Particulate matter smaller than 10 microns (pm10) has been found to be particularly harmful to health.
Fine liquid or solid particles such as dust, smole, mist, fumes or smog, found in the air or emissions.
Solid particles, mostly carbon, found in vehicle exhaust. These types of emissions are associated primarily with diesel engines, and can be caused by a misadjusted or mistimed injection pump.
Liquid or solid particles such as dust, smoke, mist, or smog found in air emissions. Particles with diameters that are less than 10 micrometers (PM10) can be deposited in the human respiratory system, where long term damage can occur since these particles usually carry other toxic substances.
Very tiny particles, pieces of dirt or minerals or organic mater so small they can be suspended in water. They may affect water's taste, smell, or clarity, but not human health.
tiny particles of solid or liquid suspended in the air; biggest human sources are burning of fossil fuels in vehicles and power plants
small suspended particles, measured by filters, that can be found in smoke, mist and air. PM 10 are defined as those particles which are 10µm in diameter. These fine particles are released during the combustion of fuels such as diesel, and they have been linked to adverse health effects.
Separate and minute particles in a gas stream. Also, those appearing in the atmosphere as a result of chimney effluent. See POLLUTION, ATMOSPHERIC.
Fine particles (liquid or solid) suspended in the air such as dust, smoke, fumes, and so on.
Tiny particles of soot, ash and other solids or liquids that are emitted into the air upon combustion.
The fine liquid or solid particles contained in combustion gases. The quantity and size of particulates emitted by cars, power and industrial plants, wood stoves, etc are regulated by the U.S. Environmental Protection Agency.
1. Fine liquid or solid particles such as dust, smoke, mist, fumes, or smog, found in air or emissions. 2. Very small solids suspended in water; they can vary in size, shape, density and electrical charge and can be gathered together by coagulation and flocculation
The term for solid or liquid particles found in the air. Some particles are large or dark enough to be seen as soot or smoke. Others are so small they can be detected only with an electron microscope. Because particles originate from a variety of mobile and stationary sources, their chemical and physical compositions vary widely. Particulate matter can be directly emitted or can be formed in the atmosphere when gaseous pollutants such as sulfur dioxide (SO2) and NOx react to form fine particles. See aerosol.
The residue left over from coal and fuel oil combustion.
Provides a cleanliness level of fluids. It is a count (by micron ranges) of solid particles found in a sample.