ENVS keywords

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A measure of the ease of movement of a material
Mobility
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A measure of how poisonous a substance is
Toxicity
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The process of oxygen removal
Deoxygenation
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A measure of how toxic a substance is to differing organisms
Specificity
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Insecticides extracted from chrysanthemums
Pyrethroids
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How long a material takes to chemically break down in the environment
Persistence
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Synthetic organic substances that include chlorines
Organochlorines
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The breakdown of a material
Degradation
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The process of break down by living organisms
Biodegradation
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The ease of which a material is broken down by living organisms
Biodegradability
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The ease of which a material turns into a liquid
Solubility
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A measure of how easily a substance dissolves into lipids
Liposolubility
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The increase in concentration of a substance in living tissue
Biaccumulation
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The progressive bioaccumulation of a substance through the food chain
Biomagnification
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The process of two substances interacting to produce a greater affect
Synergism
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A material that can cause changes in DNA structure
Mutagen
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A substance that can cause cancer
Carcinogen
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A substance that can cause uninherited birth defects
Teratogen
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A pollutant released by human activites
Primary pollutant
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A pollutant released by chemical reactions between primary pollutants and the environment
Secondary pollutant
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A haze in the atmosphere caused by the reaction of pollutants with sunlight
Photochemical smog
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Effluents that come from multiple sources
Diffuse source
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A localised or stationary source of pollution
Point source
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A measure of acidity
pH
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A measure of pollution based on the health and abundance of present selected organisms
Biotic index
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When the temperature is lower than normal so warm air lies above cold air and slows diffusion
Temperature inversion
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An urban area where smoke emissions are restricted
Smokeless zone
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Processes that remove sulphur oxides from effluents
Desulphurisation
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A device fitted to vehicle exhausts to remove pollutants such as NOx
Catalytic converter
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A method of reducing NOx emissions
Urea spray
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Equipment used to remove suspended particles fro gaseous effluents
Electrostatic precipitator
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A fine water spray that removes suspended solids from gas
Scrubber
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Equipment that spins suspended solids out of gaseous effluents
Cyclone separator
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Organic insecticides containing phosphorous
Organophosphates
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A pesticide that is absorbed and transported in the sap
Systemic pesticide
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Nutrients such as nitrates and phosphates
Inorganic nutrients
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A water body with a low nutrient level
Ogliotrophic
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A water body with a high nutrient level
Eutrophic
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High energy nutrients such as carbohydrates from dead organic matter
Organic nutrients
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The removal of organic solids from the fluids during sewage treatment
Primary treatment
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The breakdown of remaining organic matter during sewage treatment
Secondary treatment
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The final process of sewage treatment where phosphates are removed
Tertiary treatment
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The break down of waste through burning
Incineration
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Biological oxygen demand
BOD
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The frequency at which an object naturally vibrates
Resonant frequency
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Stress cracking of a material caused by repetitive vibrating from sound
Acoustic fatigue
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The unit of sound used to monitor noise pollution
Decibel
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A measure of noise pollution used to monitor aircraft noise pollution around airports
NNI
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The mathematical relationship where increasing distance reduces radiation exposure by 1/distance squared
Inverse square law
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Prediction of routes taken by pollutants to asses the risks
Critical pathway analysis
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A method of monitoring effluents on people to assess risk
Critical group monitoring
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The process of encapsulating radioactive waste in molten glass
Vitrification
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Sealing solid waste in a solid material such as cement or a stainless steel drum
Encapsulation
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Other cards in this set

Card 2

Front

A measure of how poisonous a substance is

Back

Toxicity

Card 3

Front

The process of oxygen removal

Back

Preview of the front of card 3

Card 4

Front

A measure of how toxic a substance is to differing organisms

Back

Preview of the front of card 4

Card 5

Front

Insecticides extracted from chrysanthemums

Back

Preview of the front of card 5
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