Which of the following is NOT a general decontamination method?

• A. Dilution
• B. Absorption
• C. Degradation
• D. Oxidation

Answer: (D)

General decontamination methods are broad strategies that apply across a wide range of contaminants. Dilution works by rinsing or washing away the contaminant, reducing its concentration on skin or gear. Absorption uses materials that trap or bind the contaminant so it can be removed more easily. Degradation breaks the contaminant down into less harmful components, often through chemical or biological processes.

Oxidation, while useful in some specific cases, depends heavily on the chemical nature of the contaminant and the presence of suitable oxidizing agents. It may not fully remove the substance, can create secondary hazardous byproducts, and isn’t universally effective for all materials (such as certain metals or non-oxidizable substances). Because of these limitations, it isn’t considered a general decontamination method.