||Relative Retention Ratios of Ninety-Five Pesticides and Metabolites on Nine Gas-Liquid Chromatographic Columns Over a Temperature Range of 170 to 204C in Two Detection Modes.
Thompson, John F. ;
Mann, Jon B. ;
Apodaca, Alfred O. ;
Kantor., Edward J. ;
||Health Effects Research Lab., Research Triangle Park, N. C.
Gas chromatography ;
Chemical analysis ;
Chlorine organic compounds ;
Phosphorus organic compounds ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Tables of relative retention data are presented for 95 organochlorine and organophosphorus pesticidal compounds at column oven temperatures from 170 to 204C in 2 degree increments. Retention values, relative to aldrin or parathion (RRT (A of P)), were found to vary inversely with increasing column temperature for all compounds eluting later than the reference compound, and in direct proportion for those compounds eluting earlier than the fixed reference compound. Studies revealed a linear relationship between column temperature and relative retention ratios; thus, by obtaining precise values by gas-liquid chromatography for a number of pesticidal compounds at 170, 185, and 200C, a computer program was developed to obtain RRT (A of P values) at all 2 degree increments from 170 to 204C, the customary limits in the gas-liquid chromatography of pesticides. The tables are valuable in the tentative identification of pesticidal peaks resulting from the chromatography of sample extracts for multiresidue assessment.
||Pub. in Jnl. of the AOAC, v58 n5 1975.
||Included in the report, Journal Articles on Pesticide Chemical Analysis. Group 1, PB-275 107.
||Reprint: Relative Retention Ratios of Ninety-Five Pesticides and Metabolites on Nine Gas-Liquid Chromatographic Columns Over a Temperature Range of 170 to 204C in Two Detection Modes,
|PUB Date Free Form
||28 Jan 75
||7D; 6F; 68E; 99A; 57P
||(Order as PB-275 107, MF A01)