Question

Difference between persistent and non persistent pollutants

Answer 1

Persistent Chemicals (Pollutants)

Persistent chemicals are those chemicals that tend to endure in the environment for years after they are released into it. It takes longer to remove them from the environment after their use is over. For instance, if pesticides containing persistent chemicals have been sprayed, it is difficult to get the chemicals out of the environment even after they have served their purpose. Examples of persistent chemicals are chlorinated hydrocarbons such as aldrin and lindane.

Nonpersistent Chemicals(Pollutants)

Nonpersistent chemicals are those chemicals that linger only for a brief period after their release in the environment. This category of chemicals includes organophosphates such as guthion and malathion. As well, chlorinated hydrocarbons such as endosulfan fall into this category.

Answer 2

HI!!

Non-persistent pesticides break down in the environment more quickly than persistent pesticides. Persistent pesticides have a greater potential to accumulate in organisms. .This happens because more of their food and water sources also contain the persistent chemical.

Hope this would help !!