IS 12609 : 1989 Pesticides - Determination of Residues in Foods - Fenthion

1 Scope

1.1 The standard prescribes gas chromatographic method for thequantitative estimation of fenthion [o, o-dimethyl-o (4-methylmercapto-3-methyl phenyl)-thiophosphate in foods (fruits andvegetables). Fenthion has to be estimated as its metabolite,fenoxon sulphone.

1.1.1 This method is applicable with a limit of detection in therange of 0.1 �g/g.

1.1.2 Though no set procedure for thin layer chromatography(TLC) is being prescribed, any standardised TLC procedure may befollowed if necessary for clean up, identification and confirmationof fenthion residues.

2 References

IS 1070 : 1977Specification for water for general laboratory use

IS 11380 : 1985 Methods of sampling for thedetermination of pesticideresidues in agricultural and food commodities