solid or a liquid, as well as the variance of environment the contaminant is found to be in. A contaminant may even be more abstract, as in the case of an unwanted energy source that may interfere with a process. The following represent examples of different types of contamination based on these and other variances.

Chemical contamination

In chemistry, the term "contamination" usually describes a single constituent, but in specialized fields the term can also mean

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