Confirmation of phorate, terbufos, and their sulfoxides and sulfones in water by capillary gas chromatography/chemical ionization mass spectrometry.
A gas chromatographic/mass spectrometric method capable of confirming phorate, terbufos, their sulfoxides, and sulfones in water is reported. Parents and their metabolites are separated in less than 5 min using a short capillary GC column and high carrier gas linear velocities. Positive ion chemical ionization mass spectrometry generates (M + H) ions indicative of the different molecular weights of the analytes and at least one confirmatory fragment ion for each analyte. Residues have been qualitatively confirmed at the 1 ppb level in fortified water samples from a variety of sources. Apparent residues in control water were less than 0.1 ppb.
Stout
S J
SJ
American Cyanamid Co., Agricultural Research Division, Princeton, NJ 08540.
daCunha
A R
AR
Boyd
J E
JE
Devine
J M
JM
D008401:Gas Chromatography-Mass Spectrometry; D007306:Insecticides / Q000032:analysis*; D009946:Organothiophosphorus Compounds / Q000032:analysis*; D010702:Phorate / Q000032:analysis*; D013450:Sulfones / Q000032:analysis; D013454:Sulfoxides / Q000032:analysis; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis
D007306:Insecticides; D009946:Organothiophosphorus Compounds; D013450:Sulfones; D013454:Sulfoxides; D014874:Water Pollutants, Chemical; D014867:Water; D010702:Phorate; C012568:terbufos