CVAF FAQ

The analytical methods used to determine mercury concentration include cold vapor atomic absorption (CVAA), cold vapor atomic fluorescence (CVAF) and inductively coupled plasma mass spectrometry (ICP-MS). Gasmet Continuous Mercury Monitoring (CMM) system is based on Cold Vapor Atomic Fluorescence (CVAF). It is an extremely sensitive and selective measurement principle and the current state-of-the-art method of measurement of trace Mercury levels.

The Gasmet Mercury Monitoring White Paper can be downloaded here for free. The White Paper answers the 13 most frequently asked questions and gives an insight of the global efforts to reduce Hg-emissions. It also describes the Best Available Techniques (BAT), emissions limitations and future legislation.

Questions answered in the White Paper:

  1. What does CVAF mean? How does it work?
  2. What is UV Fluorescence?
  3. CVAF or CVAA?
  4. Is there any interference from SO2?
  5. What is quenching and how it is minimized?
  6. What is the detection limit of the Gasmet CMM?
  7. How are all mercury compounds measured?
  8. What are the typical applications for the Gasmet CMM?
  9. How is calibration performed?
  10. How sensitive is the CMM to reactive gases?
  11. What are the special features of the CMM software?
  12. How is sample contamination avoided?
  13. Why and how is sample gas dilution performed?