RECOVERY OF ACRYLONITRILE FROM CHARCOAL TUBES AT LOW-LEVELS

Data are presented for the recovery of acrylonitrile from charcoal tubes at levels lower than those tested in NIOSH Method S156. A 2% by volume acetone in CS2solution is used as desorbing solvent. An injection volume of 2 μL and a 3-m long by 3.2-mm mm o.d. (10-ft × 1/8-in) stainless steel column filled with 20% SP-1000 on 80/100 Supelcoport gives adequate resolution of the acrylonitrile. Results indicate that recoveries are adequate for sample sizes which correspond to a 15-liter sample at 0.5 and 0.25 ppm, and that acrylonitrile collected on carbon in the absence of inhibitor is stable for at least a week. Copyright 1979, American Industrial Hygiene Association