Note
This study is to report the results of reduction of trichloroethylene (TCE) and trihalomethane (THM)in the water-photolysis system. TCE and THM are chosen for this study because these compounds have posed a potentially serious environmental problem in both natural and drinking waters (Symons et al 1975), these carcinogenic suspected chemicals are also classified as 'priority pollutants' by the U.S. Environmental Protection Agency (US EPA 1979).