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Title: A simple spectrophotometric method. for the determination of some organophosphorus insecticides
Authors: Verma, B C
Kumar, Satish
Kalia, S B
Sood, Sumita
Sharma, D K
Issue Date: Dec-1999
Publisher: NISCAIR-CSIR, India
Abstract: A photometric titration method for the determination of organophosphorus insecticides in their commercial formulations has been developed. In the present method potassium hydroxide hydrolyses oxydemton-methyl, malathion, dimethoate and formothion smoothly and quantitatively in aqueous tert-butanol and the residual alkali is instantaneously transformed into bright yellow potassium benzyl trithiocarbonate (through reaction with carbon disulphide and benzyl mercaptan ) showing  λmax at 430 nm.
Page(s): 1310-1312
Appears in Collections:IJC-A Vol.38A(12) [December 1999]

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