Constituent(s) of Concern
Specific chemicals that are identified for evaluation in the site assessment process
Construction and Demolition Waste ...
constituent day The time of the rotation of the Earth with respect to a fictitious celestial body representing one of the periodic elements in the tidal forces.
Constituent: An essential part or component of a system or group (e.g., an ingredient of a chemical mixture). For instance, benzene is one constituent of gasoline.
Constituents in water, which are not normally harmful to health but may cause offensive taste, odor, color, corrosion, foaming, or staining.
Nutrient ...
constituent parts and still retain its chemical identity. For
example, sodium (Na) is an element.
end bells. Devices used to hold the rotor and stator of a motor ...
The constituent of elements - the smallest building block which can combine chemically with other atoms and therefore form compounds.. The atom consists of an electron cloud surrounding a nucleus.
Gaseous constituents of the atmosphere, both natural and from human activity, that absorb and re-emit infrared radiation. Water vapor (H2O) is the most abundant greenhouse gas. Greenhouse gases are a natural part of the atmosphere
H
Top ...
Specific constituents that are identified for evaluation in the risk assessment process.
Chemicals of Potential Concern (COPC) ...
The main soil constituent or material that encloses other soil features, for example, concretions embedded in a fine-grained matrix.
mature soil
A soil having well-developed soil horizons produced by the natural processes of soil formation.
Capacity Limiting Constituents
CLEANS
Clinical Laboratory for Evaluation and Assessment of Toxic Substances ...
The fundamental cell wall constituent in all green plants. Census In ecology, an attempt to count every member of a population.
PHC- Principal Hazardous Constituent
PHI- Pre-Harvest Interval
PHSA- Public Health Service Act
PI- Preliminary Injunction. Program Information
PIC- Products of Incomplete Combustion
PIGS- Pesticides in Groundwater Strategy ...
trace gas A minor constituent of the atmosphere. The most important trace gases contributing to the greenhouse effect are water vapor, carbon dioxide, ozone, methane, ammonia, nitric acid, nitrous oxide, ethylene, sulfur dioxide, nitric oxide, ...
Ozone, the triatomic form of oxygen (O3), is a gaseous atmospheric constituent. In the troposphere, it is created both naturally and by photochemical reactions involving gases resulting from human activities (photochemical smog).
PNAs or Polynuclear Aromatic Hydrocarbons, are natural constituents of crude oil, and also may be formed when organic materials such as coal, oil, fuel, wood or even foods are not completely burned.
The permanent constituents are molecular nitrogen; 78.1%, molecular oxygen; 20.9%, argon; 0.934%, and approximately 0.037% carbon dioxide (but this is increasing...). Various other components exist in trace amounts.
Constituent of chromosomes which stores the hereditary information of an organism in the form of a sequence of purine and pyrimidine bases: this information relates to the synthesis of proteins and hence it is a determinant of all physical and ...
Greenhouse gases: Those gaseous constituents of the atmosphere, both natural and artificial, that absorb and reemit infrared radiation and that are responsible for global warming.
Total Petroleum Hydrocarbons (TPH): Measure of the concentration or mass of petroleum hydrocarbon constituents present in a given amount of soil or water.
Volatile organic compound (VOC) The environmental or legislated definition: Constituents that will evaporate at their temperature of use and which, by a photochemical reaction, ...
Waste products that are biodegradable cause less harm in the environment since, after having been bio-degraded, their constituent parts are used by other organisms and processes in nature.
Organic substances "biodegrade" when they are broken down by other living organisms (such as enzymes and microbes) into their constituent parts, and in turn recycled by nature as the building blocks for new life.
Virus A submicroscopic genetic constituent which can alternate between two distinct phases. As a virus particle, or virion, it is DNA or RNA enveloped in an organic capsule.
A concentration unit of chemical constituents in solution; the weight of solute per unit volume of solvent, usually water, one thousand milligrams per liter is equivalent to 1 gram per litre, this measure is equivalent to parts per million.
ppt ...
tertiary treatment An advanced stage of wastewater treatment designed to remove nutrients or other constituents remaining after secondary treatment.
Alkalinity: The measurement of constituents in a water supply which determine alkaline conditions. The alkalinity of water is a measure of its capacity to neutralize acids. See pH.
An expression of the concentration of specified constituents in water in terms of their equivalent value to calcium carbonate.
Principal Organic Hazardous Constituents (POHCs): Hazardous compounds monitored during an incinerator's trial burn, selected for high concentration in the waste feed and difficulty of combustion.
Nuisance Contaminant: constituents in water which are not normally harmful to health but may cause offensive taste, odor, color, corrosion, foaming, or staining.
biodegradable - waste material composed primarily of naturally-occurring constituent parts, able to be broken down and absorbed into the ecosystem. Wood, for example, is biodegradable, for example, while plastics are not.
MAXIMUM CONTAMINANT LEVEL: The highest allowable amount of a constituent in water. Drinking water quality criteria are established by the U.S. Environmental Protection Agency as regulatory standards.
The methane is a flammable gas, chemically identical to the main constituent of natural gas, and can be used as a fuel for heat and/or electricity generation.
Concentration: The quantity of one constituent dispersed in a defined amount of another.
Allochthonous process: Deposits of material that are found in a place other than where they and their constituents were formed.
Anaerobic: refers to the absence of oxygen ...
WVO Waste Vegetable Oil. The fat we collect from chip shops etc, which is the main constituent of our fuel.
Return to main bio-power site index ...
Land Disposal Restrictions: Rules that require hazardous wastes to be treated before disposal on land to destroy or immobilize hazardous constituents that might migrate into soil and ground water.
Oxidant - A collective term for some of the primary constituents of photochemical smog.
Ground-level ozone is the primary constituent of smog. Sunlight and hot weather cause ground-level ozone to form in harmful concentrations in the air. As a result, it is known as a summertime air pollutant.
leaching : The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid.
Water (H2O): An odorless, tasteless, colorless liquid made up of a combination of hydrogen and oxygen. Water forms streams, lakes, and seas, and is a major constituent of all living matter.
Many VOCs are human-made chemicals that are used and produced in the manufacture of paints, pharmaceuticals, and refrigerants. Common sources of VOCs include paint thinners, drycleaning solvents, and some constituents of petroleum fuels.
that heteronuclear diatomic molecules and tri- (and more) atomic gases absorb at infrared wavelengths but homonuclear diatomic molecules do not absorb infrared light. This is why H2O and CO2 are greenhouse gases but the major atmospheric constituents ...
 See also: Water, Air, Environment, Concentration, Condition
  
|
RSS
