Abstract
Abstract The sampling of 2-furaldehyde, pentanedial, and pentanal from air has been accomplished using sorbent tubes containing 120-mg and 60-mg beds of XAD-2 coated with 10 percent 2-(hydroxymethyl)piperidine. Samples were collected at ca. 50 cm3/min for a maximum of 4 hours for 2-furaldehyde, ca. 80 cm3/min for a maximum of 8 hours, or ca. 200 cm3/min for minimum of 15 minutes for pentanedial and ca. 40 cm3/min for a maximum of 4 hours for pentanal. The oxazolidines, formed by reaction of the 2-(hydroxymethyl)piperidine with the aldehydes, were desorbed from the sorbent with 2 ml of toluene. Recovery from the sorbent was essentially quantitative for the aldehydes, and the resulting solution was analyzed by gas chromatography using a fused-silica capillary DB-5 column. Typical limits of detection ranged from 0.2–0.6 μg/sample for 2-furaldehyde, pentanedial, and pentanal. Pooled relative standard deviations for sets of 18 samples were 7.6 percent (3–41 mg/m3) for 2-furaldehyde, 8.7 percent (1–8 mg/m3) for...
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