Collection and Ion Chromatographic Determination of Ammonia and Methylamines in Air

Determination of aliphatic primary and secondary amines and polyamines in air by high-performance liquid chromatography

“…For a vapor concentration equal to twice the ACGIH standard level, no breakthrough of any of the compounds was observed when 120 L of air of 100% relative humidity was sampled and the capacity of the silica gel (0.350 g) exceeded the amount of amine collected in this concentration. These results are in concordance with the observations related by Taylor (24,25) and Bouyoucos et al (16).…”

“…was not observed to have an effect on collection efficiency, and storing the spiked tubes in the dark at 4 °C for 1 month did not impair recovery (16).…”

Determination of trace levels of trimethylamine in air by gas chromatography/surface ionization organic mass spectrometry

“…The necessity of determining these compounds at low levels in complex matrices has resulted in a number of analytical schemes (7)(8)(9)(10). Usually concentration prior to identification is necessary.…”

“…Usually concentration prior to identification is necessary. Solvent absorption (7) and adsorption on porous polymers (3,8,9) are well-known concentration techniques.…”