November 1, 1999
      
                  
        
  Author(s)
  M  Chaychian,   Joseph  Silverman,   M I. Al-Sheikhly,   Dianne L.  Poster,   Pedatsur  Neta
 
       
            
    
    
        Complete degradation of 2,2',6,6'-tetrachlorobiphenyl (PCB 54) in transformer oil is achieved by ionizing radiation without degradation of the oil. Gamma irradiation of transformer oil containing PCB 54 (0.27 mg/g) with a dose of 200 kGy results in