System and process for total gaseous nonmethane organic analysis

An analyzer for determining the concentration of non-methane organic chemicals in a gaseous sample comprising:

• means for analyzing a gaseous sample;
• first column means for initially receiving the gaseous sample to be analyzed and to reversibly retain at least any methanol, acetone and benzene while permitting at least methane and carbon dioxide to pass through;
• second column means downstream of the first column means for thereafter receiving the treated gaseous sample from said first column means and to irreversibly retain any carbon dioxide while permitting at least methane to pass through;
• third column means coupled downstream of the second column means for thereafter receiving the treated gaseous sample from said second column means and to reversibly retain at least any ethylene and ethane while permitting at least methane to pass through;
• flushing means coupled to said column means to flush the reversibly retained chemicals from said first, second and third column means;
• and
• means for coupling said analyzing means to receive the chemicals flushed by said flushing means so as to enable the analyzing means to determine the concentration of organic chemicals in the received chemicals.