On the Electrochemical Reduction of O, O-Dimethyl-O-(3-Methyl-4-Nitrophenyl)-Phosphorthioate (Fenitrothion) Pesticide in Acetonitrile Solution

Acetonitrile 용액중에서 살충제 O, O-Dimethyl-O-(3-Methyl-4-Nitrophenyl)-Phosphorothioate (Fenitrothion)의 전기화학적 환원

  • 김일광 (원광대학교 자연과학대학 화학과) ;
  • 김윤근 (원광대학교 자연과학대학 화학과) ;
  • 천현자 (원광대학교 자연과학대학 화학과)
  • Published : 1988.06.20


The electrochemical reduction of O,O-dimethyl-O-(3-methyl-4-nitrophenyl)-phosphorothioate (Fenitrothion) has been studied in acetonitrile solution containing surfactant micelle by direct current (DC)-differential pulse (DP) polarography, cyclic voltammetry (CV) and controlled potential coulometry (CPC). The partially reversible electron transfer-chemical reaction(EC, EC mechanism) of fenitrothion reduction proceeded by four electron transfer to form O,O-dimethyl-O-(3-methyl-4-hydroxyaminophenyl)-phosphorothioate which undergoes single bond of the phosphorus atom and phenoxy group cleaves to give p-amino-m-cresol and dimethyl thiophosphinic acid as major product by two electron transfer-protonation at higher negative potential. The polarograpic reduction waves shown to suppressed due to inhibitory effect of sodium lauryl sulfate micelle solution and split up on selectivity of anionic micelle effect in two step at the first reduction peak.



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