title: Production of mutagenic artifacts by the action of residual chlorine on XAD-4 resin.
abstract: XAD resins are commonly used to recover and concentrate organics from chlorinated water. It was found that the action of residual chlorine on XAD-4 resin produced mutagenic artifacts in a dose dependent manner. The production of mutagenic artifacts could be suppressed at least ten-fold by converting free chlorine to monochloramine. Kinetic studies of the reaction between free chlorine and XAD-4 resin showed a reaction rate dependence upon pH and chloride ion concentration that suggests participation of species besides hypochlorous acid.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002700:Chloramines / Q000138:chemical synthesis; D002713:Chlorine; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D009153:Mutagens / Q000138:chemical synthesis*; D011137:Polystyrenes; D011145:Polyvinyls; D013696:Temperature
chemical_list: D002700:Chloramines; D009153:Mutagens; D011137:Polystyrenes; D011145:Polyvinyls; C012101:XAD-4 resin; D002713:Chlorine; C030816:chloramine