contamination

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contamination

A condition of impurity resulting from mixture with a foreign substance.

References in periodicals archive ?
However, since TCDD is not among the many dioxins that contaminate pentachlorophenol, the researchers suspect that the high TCDD levels they detected in the fat from 10 of the 13 southern Vietnamese most likely represent a residual contamination from the heavy use of Agent Orange there during the war.
The base-case release, which is an average of 92 different scenarios under various weather conditions and locations in lower Manhattan, contaminates the equivalent of 4 million 12x12x8-ft rooms.
If you drank the groundwater it contaminates and ate food grown in its tainted soil, you'd still be much safer than the average nuclear power plant employee.

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