SIFT-MS now provides a complete solution for stack and ambient monitoring scenarios involving acid gases analysis.


Acid gases are emitted from diverse industrial sources and are harmful to humans and the environment. Traditionally detection has involved specialized technologies that cannot comprehensively monitor emissions. Other pollutants, such as volatile organic compounds (VOCs), are either not quantified or multiple technologies must be invested in.

Syft Technologies’ introduces a breakthrough in stack and ambient gas analysis, with Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) now detecting acid gases that were previously inaccessible to direct MS techniques. This provides an all-in-one solution for acid gas monitoring.

Traditionally SIFT-MS has used positive reagent ions (H3O+, NO+, and O2+), which are more suitable for detecting VOCs than inorganic gases. Recent innovation has added four negatively charged reagent ions: O-, O2-, OH-, and NO2-. The additional ionization mechanisms provided by the new ions have enabled previously inaccessible gases – such as hydrogen chloride, hydrogen fluoride, and sulfur dioxide – to be analyzed.

Instrument detection limits are in the part-per-trillion concentration range (by volume), which is ideal for ambient monitoring. Stack gas analysis is easily accommodated via in-line sample dilution.

This advance means that SIFT-MS now provides a complete solution for stack and ambient monitoring scenarios involving acid gases and VOCs.

Acid Gas Analysis

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SIFT-MS Key Benefits:


  • Detection of toxic acid gases and other inorganic and organic pollutants with a single instrument
  • Very high selectivity through the application of positive and negative reagent ions
  • Analytical results in seconds
  • Detection limits in the pptv range
  • Easy to use
  • Site deployable and remotely operable

For more information on acid gas analysis.

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Related Applications:

Fenceline Monitoring

Real-time, comprehensive, and continuous air analysis using SIFT-MS enables fenceline monitoring to assure compliance with emissions regulations.

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