Gas Chromatography: MCERTS Certification for Ambient Air Analysis on Benzene and VOCs

Franck Amiet, Michel Robert, Dr Nicholas A Martin

Due to environmental issues, the world of gas analysis is evolving very rapidly. Governments set the rules to limit and control the environmental pollution through legislation. Volatile organic compounds (VOCs), often produced by human activities, are amongst the sources of pollution that
need to be identified and quantified for safety reasons. Exposure to high concentrations of certain VOCs is dangerous, even for short times, and the impact of low concentrations of VOCs on people’s health and environment has also become a major concern in recent years. The concentration of such compounds can be very different depending on the measurement area and it is a considerable technological challenge to analyse precisely and continuously the VOCs present in air within industrial walls or at the top of a mountain using the same instrument. Presently, only benzene is regulated, but there are moves to measure other VOCs which are known to be ozone precursors.

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