1.1 This standard prescribes spectrophotometric and gas chromatographic methods for the determination of fenitrothion [( 0,0-Dimethyl 0-( 3-methyl-4- nitrophenyl ) phosphorothioate ] residues in foods.
1.1.1 Spectrophotometric method may be adopted as a limit test for routine purposes and is generally applicable at 0·l ppm level, whereas gas chromatography shall be the reference method with the detection limit of 0 01 to 0·001 ppm.
1.1.2 Though no set procedure for Thin Layer Chromatography ( TLC ) is being prescribed, any standardized TLC procedure may be followed if necessary for clean up, identification and confirmation of fenitrothion residues.
IS 10168-1982 history
1982IS 10168-1982 Method for determination of fenitrothion residues in food