Decomposition of phorate in aqueous solution by photolytic ozonation.
The degradation of phorate, a highly toxic organic phosphate pesticide, in aqueous solution by photolytic ozonation was studied under various experimental conditions. The rate constants of phorate decomposition and formation of various anions by photolytic ozonation were roughly independent of the solution's pH value. The initial step of the photolytic decomposition of phorate is considered to be the breakage and subsequent oxidation of the P=S double bond on the phorate molecule, followed by isomerization and consequent oxidation of various organic intermediates.
Ku
Young
Y
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei. ku@ch.ntust.edu.tw
Lin
Hung-Shian
HS
D006863:Hydrogen-Ion Concentration; D007536:Isomerism; D007700:Kinetics; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D010702:Phorate / Q000737:chemistry*; D010782:Photolysis; D012996:Solutions / Q000737:chemistry; D013997:Time Factors; D014867:Water / Q000737:chemistry*
D012996:Solutions; D014867:Water; D010702:Phorate; D010126:Ozone