Persistence: Refers to the length of time a compound stays in the environment, once introduced.
persistence
Attribute of a substance that describes the length of time that the substance remains in a particular environment before it is physically removed or chemically or biologically transformed.
persistence The length of time a compound stays in the environment once introduced.
persistent pesticides Pesticides that do not break down chemically or break down very slowly and remain in the environment after a growing season.
Persistence: resistance to degradation as measured by the period of time required for complete breakdown of a material. Depends on temperature, pH, soil type, light intensity, etc.
Persistence: Length of time a compound remains in the environment once introduced.
Pest: Any form of animal, plant, or terrestrial life that is injurious to health or the environment.
Persistence is the word used for chemicals that do not break down very easily and remain persistent (in one form or another) in the environment ...
Persistence - The quality of remaining for a long period of time (such as in the environment or the body). Persistent chemicals (such as DDT and PCBs) are not easily broken down.
PCBs are organochlorines that were manufactured until the mid-1980s, after which they were banned due to their toxicity and persistence. PCBs have been widely used as insulators in electrical equipment.
Contaminants generally mean chemicals and can constitute health hazards because of persistence, toxicity levels or mobility.
In this lesson, students will develop an awareness of the persistence of man-made polymers; those various plastic products that participate in every aspect of our lives.
Chemicals selected from the group of chemicals found at the site and used for a public health evaluation. They are selected on the basis of toxicity, mobility and persistence, and are thought to be the chemicals of the greatest potential risk.
It has a half-life of 15 years and can collect in fatty tissues of certain animals. EPA banned registration and interstate sale of DDT for virtually all but emergency uses in the United States in 1972 because of its persistence in the environment ...
Because of their volatile nature, they readily evaporate into the air, increasing the potential exposure to humans. Due to their low water solubility, environmental persistence and widespread industrial use, ...
 See also: Waste, Water, Air, Environment, Toxic
  
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