title: Capillary gas chromatographic analysis of trichlorfon in dosed feed formulations.
abstract: A method was developed for the analysis of trichlorfon as the intact molecule from feed formulations of the chemical. The method involved isolation of trichlorfon by a simple extraction procedure. Subsequent detection and quantitation of the trichlorfon was by gas chromatography with a DB-1 fused-silica wide-bore capillary column and flame photometric detection. Automated on-column injections were performed. The method was linear in the range 5-75 ng injected on-column and had an average recovery of 86%. The limit of detection for trichlorfon in feed was 1 ppm. The applicability of the method was tested by determining the stability of trichlorfon over a 21-day period in a feed blend of trichlorfon at the 50-ppm concentration level. Mass spectrometric analyses were performed to confirm that trichlorfon could be quantitated as the intact molecule.
authors.affiliation: Midwest Research Institute, Kansas City, Missouri 64110.
authors.forename: C L
authors.initials: CL
authors.lastname: Cox
authors.forename: L L
authors.initials: LL
authors.lastname: Timmons
authors.forename: R L
authors.initials: RL
authors.lastname: Ridlen
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods*; D014236:Trichlorfon / Q000032:analysis*
chemical_list: D014236:Trichlorfon