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Abstract
Different methods for gas chromatographic trace analysis of a wide variety of amines are described. Both packed columns and glass capillary columns are used. The advantages of a nitrogen selective detector and a nitrogen-free stationary phase are demonstrated. Special concern is devoted to direct analysis of free amines on packed columns in organic solvents as well as in alkaline aqueous solutions with varying salt concentrations. Determination limits below 0.1 ppm are usually obtained and the precision at the 1 ppm level is generally about 2–3%. A permethylation procedure applicable to aqueous solutions has been developed for polyamines.
Air sampling in acidic absorption solutions as well as on a solid adsorbent (Chromosorb 103) combined with thermal desorption is discussed. Applications from various industries and from the building sector are presented.