Measurement of Gaseous Organic Compound Emissions by Gas Chromatography
The major organic components of a gas mixture are separated by gas chromatography (GC) and
individually quantified by flame ionization, photoionization, electron capture, or other
appropriate detection principles. The retention times of each separated component are compared
with those of known compounds under identical conditions. Therefore, the analyst confirms the
identity and approximate concentrations of the organic emission components beforehand. With
this information, the analyst then prepares or purchases commercially available standard
mixtures to calibrate the GC under conditions identical to those of the samples. The analyst also
determines the need for sample dilution to avoid detector saturation, gas stream filtration to
eliminate particulate matter, and prevention of moisture condensation.
For more information and documents about Method 18, please consult the EPA's Method 18 webpage.
Apex Instruments offers a M180 VacBag Sampler System, which takes an integrated gas sample in accordance with the U.S. EPA Method 18. If interested in Method 18 sampling, Apex Instruments works with our customers to make sure we are providing the correct products for your project and will provide you with a price quote. For any questions about our sampler system, please contact sales@apexinst.com.