What does the term 'injection' refer to in the context of hazardous materials?

The term 'injection' in the context of hazardous materials specifically refers to exposure that occurs when a substance enters the body through a break in the skin, such as a cut or abrasion, often facilitated by contaminated objects. This method of exposure can occur when sharp objects, like needles or pieces of glass that have been in contact with hazardous materials, penetrate the skin, allowing the harmful substances to enter the bloodstream directly.

Understanding 'injection' as a mode of exposure is crucial for first responders and officers who deal with hazardous materials, as it highlights the importance of protective measures such as gloves and other personal protective equipment to prevent direct contact with potential contaminants. In comparison, exposure through inhalation, contaminated surfaces, or ingestion involves different pathways that do not directly involve penetration through the skin, which emphasizes the specific risk associated with injection.