Laboratory Terms G

A glossary of science, chemistry, environmental and laboratory terms.

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41 results match your search term:  G


Game Fish
Species like trout, salmon, or bass, caught for sport. Many of them show more...

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Garbage
Animal and vegetable waste resulting from the handling, storage, sale, prepar...

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Gas Chromatograph Mass Spectrometer
Instrument that identifies the molecular composition and concentrations of va...

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Gasahol
Mixture of gasoline and ethanol derived from fermented agricultural products ...

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Gasification
Conversion of solid material such as coal into a gas for use as a fuel.

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Gasoline Volatility
The property of gasoline whereby it evaporates into a vapor. Gasoline vapor i...

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General Permit
A permit applicable to a class or category of dischargers.

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General Reporting Facility
A facility having one or more hazardous chemicals above the 10,000 pound thre...

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Generally Recognized as Safe GRAS
Designation by the FDA that a chemical or substance (including certain pestic...

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Generator
1. A facility or mobile source that emits pollutants into the air or releases...

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Genetic Engineering
A process of inserting new genetic information into existing cells in order t...

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Genotoxic
Damaging to DNA; pertaining to agents known to damage DNA.

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Geographic Information System GIS
A computer system designed for storing, manipulating, analyzing, and displayi...

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Geological Log
A detailed description of all underground features (depth, thickness, type of...

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Geophysical Log
A record of the structure and composition of the earth encountered when drill...

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Geothermal Source Heat Pump
These heat pumps are underground coils to transfer heat from the ground to th...

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Germicide
Any compound that kills disease-causing microorganisms.

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Giardia Lamblia
Protozoan in the feces of humans and animals that can cause severe gastrointe...

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Glass Containers
For recycling purposes, containers like bottles and jars for drinks, food, co...

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Global Warming
An increase in the near surface temperature of the Earth. Global warming has ...

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Global Warming Potential
The ratio of the warming caused by a substance to the warming caused by a sim...

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Glovebag
A polyethylene or polyvinyl chloride bag-like enclosure affixed around an asb...

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Gooseneck
A portion of a water service connection between the distribution system water...

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Grab Sample
A single sample collected at a particular time and place that represents the ...

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Grain Loading
The rate at which particles are emitted from a pollution source. Measurement ...

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Granular Activated Carbon Treatment
A filtering system often used in small water systems and individual homes to ...

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Grasscycling
Source reduction activities in which grass clippings are left on the lawn aft...

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Grassed Waterway
Natural or constructed watercourse or outlet that is shaped or graded and est...

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Gray Water
Domestic wastewater composed of wash water from kitchen, bathroom, and laundr...

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Greenhouse Effect
The warming of the Earth's atmosphere attributed to a buildup of carbon dioxi...

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Greenhouse Gas
A gas, such as carbon dioxide or methane, which contributes to potential clim...

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Grinder Pump
A mechanical device that shreds solids and raises sewage to a higher elevatio...

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Gross Alpha-Beta Particle Activity
The total radioactivity due to alpha or beta particle emissions as inferred f...

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Gross Power-Generation Potential
The installed power generation capacity that landfill gas can support.

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Ground Cover
Plants grown to keep soil from eroding.

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Ground Water
The supply of fresh water found beneath the Earth's surface, usually in aquif...

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Ground Water Under the Direct Influence UDI of Surface Water
Any water beneath the surface of the ground with: 1. significant occurence of...

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Ground-Penetrating Radar
A geophysical method that uses high frequency electromagnetic waves to obtain...

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Ground-Water Discharge
Ground water entering near coastal waters which has been contaminated by land...

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Ground-Water Disinfection Rule
A 1996 amendment of the Safe Drinking Water Act requiring EPA to promulgate n...

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Gully Erosion
Severe erosion in which trenches are cut to a depth greater than 30 centimete...

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