Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Nuclear Quadrupole Resonance Spectrometry of Some Chlorinated Pesticides.
Author Roll, David B. ; Biros., Francis J. ;
CORP Author Environmental Protection Agency, Perrine, Fla. Primate and Pesticides Effects Lab.
Year Published 1968
Stock Number PB-275 981
Additional Subjects Pesticides ; Chemical analysis ; Nuclear magnetic resonance ; Chlorine organic compounds ; Insecticides ; Dieldrin ; Chlordan ; Reprints ; Nuclear quadrupole resonance spectrometry ; Cyclohexane/hexachloro ; Aldrin ; Heptachlor ; Heptachlor epoxide ; Endrin
Library Call Number Additional Info Location Last
NTIS  PB-275 981 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 5p
Chlorine nuclear quadrupole resonance (NQR) spectrometry has been employed to demonstrate the difference in the chemical environment of the Cl atoms in several organochlorine compounds commonly used as pesticides. Correlations between resonance frequency and structure have been made in four isomers of 1,2,3,4,5,6-hexachlorocyclohexane (HCH) and in certain cyclodiene chlorinated insecticides including 1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-hexahydro-1,4-endo, exo-5,8-dimethanonaphthalene (aldrin), 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-endo, exo-5,8-dimethanonaphthalene (dieldrin), 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindene (heptachlor), 1,4,5,6,7,8,8-heptachloro-2,3-epoxy-2,3,3a,4,7,7a-hexahydro-4,7-methanoindene (heptachlor epoxide), 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-endo, endo-5,8-dimethanonaphthalene (endrin), and cis-1,2,4,5,6,7,8,8-octachloro-2,3,3a,4,7,7a-hexahydro-4, 7-methanoindene (alpha-chlordane). Assignment of signals to specific chlorine atoms has been made utilizing spectra-structure correlation charts and other data. Some of the problems encountered in the interpretation of NQR spectra are discussed.