Abstract
A cryogenic sampler for aniline vapors was evaluated by collecting samples of 10 ppm aniline in air and directly analyzing the collected aniline by liquid chromatography with electrochemical detection. The cryogenic sampler achieved nearly 100% collection and recovery efficiency, with a detection limit of ≈ 4 parts-per-billion (10 9) aniline in air for a sample collected at 10 cm 3/min for 40 s in a 200-μl stainless-steel loop at — 10°C. About 5 min was necessary to dissolve the trapped aniline into 200 μl of a mobile phase desorbing solution at 20°C.
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