The present work embodies the results of scientific investigation involving the use of safe radiolysis process for degradation of PCBs; persistent organic pollutants present in used oils by gamma radiation using Co-60 as a radiation source. The work reports the salient aspects of ship breaking activity in India, gamma irradiation of PCBs, gamma irradiation of various oils, method development and validation, determination of PCBs in thermic oils using GC-MS, etc. The aim is to assess the level of destruction of PCBs in standards and oils by gamma irradiation and to determine the optimum dose...