Which statement about VOC detectors is true?

Which statement about VOC detectors is true?

• A. A PID is used for radioactive detections
• B. VOC detectors cannot be used in hazmat environments
• C. VOC detection is not necessary in hazmat incidents
• D. A PID or similar VOC detector is capable of detecting volatile organic compounds

Answer: (D)

Volatile organic compound detection relies on instruments designed to sense organic vapors in the air. A photoionization detector uses ultraviolet light to ionize many VOC molecules present in the sample. The resulting ions create an electrical signal that is proportional to the concentration of organics, allowing responders to detect and gauge VOC levels quickly in hazmat scenarios. Because a PID or similar VOC detector can identify volatile organic compounds, that statement is true and reflects how these devices are used in the field to assess inhalation hazards, flash points, and overall air quality around chemical releases.

Other choices mix up detector purposes or overlook the need for VOC detection in hazmat work. Radiation detectors measure ionizing radiation, not VOCs. VOC detectors are specifically designed for hazmat environments to track organic vapors that could pose inhalation or ignition risks, so excluding VOC detection would miss a critical aspect of scene assessment.