What is a Photoionization Detector (PID) used to measure?

A Photoionization Detector (PID) is specifically designed to measure volatile organic compounds (VOCs) in the air, making its primary function to detect and quantify a mixture of all volatiles present in an environment. These instruments utilize ultraviolet light to ionize molecules, which allows for the detection of various volatile substances, regardless of their chemical structure.

This capability is particularly useful in the context of environmental assessments, such as those conducted at sites with underground storage tanks, where detecting a broad spectrum of volatile chemicals is often crucial for identifying potential contamination. PIDs are sensitive to many types of organic compounds and can quickly provide data regarding air quality, making them essential tools in site assessment procedures.

In this context, the ability of the PID to assess a wide range of volatile compounds makes it invaluable for monitoring and ensuring public safety, as well as for regulatory compliance.