Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

Can lead be absorbed through the skin?

1. Yes

2. No

3. Only in children

4. Only when in liquid form

The correct answer is: No

Lead is primarily absorbed into the body through the respiratory and gastrointestinal tracts rather than through the skin. The skin acts as a barrier to many substances, and lead particles, even in dust or powder form, are not readily absorbed through it. While there are certain conditions, such as in the case of lead salts or in high concentrations, that may allow for dermal absorption, it is not the primary route of exposure. This understanding is crucial for risk assessment and management strategies, especially when considering environments where lead exposure could occur. It emphasizes the importance of addressing airborne and ingested lead as the main concerns, while dermal exposure remains a less significant pathway. The clarity on how lead interacts with the body can help in devising appropriate safety measures and regulations.