The tendency of a chemical to remain in the environment without transformation or breakdown into another chemical form. It refers to the length of time a chemical is expected to reside in the environment and be available for exposure.
Years ago I can remember my father being concerned about neighbor's farming their crops with the use of DDT. He was concerned with the run-off into our gardens and land. I can remember him saying that DDT took a long time to go away as it accumulates for a long period of time before it breaks down. This was way back in the 1950's. Is it possible that DDT is still accumulating today? Surely not! That pretty scary!
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