What is one of the most common technologies used in post-fire air monitoring and detection devices?

Electrochemical sensors are widely utilized in post-fire air monitoring and detection because they are sensitive to various gases that can be present in the environment following a fire. These sensors work by detecting changes in electrical current resulting from chemical reactions that occur when certain gases come into contact with the sensor's electrode materials.

Their ability to measure specific toxic gases, such as carbon monoxide or hydrogen cyanide, is critical in assessing air quality and ensuring that the area is safe for re-entry after a fire incident. Electrochemical sensors are valued for their accuracy, portability, and rapid response time, making them an effective choice for monitoring hazardous gas levels in real-time.

While other technologies like thermal imaging, colorimetric tubes, and gas chromatography have their own advantages, they do not offer the same level of immediacy and specificity for detecting low concentration levels of gases in post-fire environments as electrochemical sensors do.