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Contamination - Wikipedia In chemistry, the term "contamination" usually describes a single constituent, but in specialized fields the term can also mean chemical mixtures, even up to the level of cellular materials All chemicals contain some level of impurity
Contamination - Definition and Examples - Biology Online Contamination, sometimes interchanged with pollution, is the existence of live things or substances produced from bacteria, fungi, viruses, animals, and avian antigens that can have various negative impacts on health