1. Agricultural crops Cabbage, United States 0.2 mg/kgcTypical level NAS 1977 Corn seed, United States 0.01 mg/kgcTypical level NAS 1977 Fruits, 12 types, Poland 0.01-0.02 mg/kg Range Bulinski et al. 1986 Lettuce, Sweden 1983-1990 0.002, 0.006 mg/kg Mean, Jorhem and (n=7) maximum Sundström 1993 Lettuce, United States 0.2 mg/kgcTypical level NAS 1977 Onions, 11 Danish sites (n=110) 1.51, 0.119-5.1 µg/kgMedian, range Bibak et al. 1998a Peas, 10 Danish sites (n=93) 4.6, 0.57-17 µg/kg Median, range Bibak et al. 1998b Potatoes, Sweden (n=8) 0.008, 0.017 mg/kg Mean, Jorhem and
2. White flour, United States 0.003 mg/kgcTypical level NAS 1977 6. POTENTIAL FOR HUMAN EXPOSURE