... from 0.03 to 3.5 ug/g particle (41). These values were similar to that reported by Sawicki et al 1965 (38) and about 1000 times less in concentration than that found ... 8 7 6 D!benz[aJ]acridine Benzo[a]phenaleno[1,9:i,f]acrtdine Dibenzo[a,j]phenazine ... The quantum chemical ...