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Main Title Micromethods for Toxic Residue Screening by Negative Chemical Ionization Mass Spectrometry.
Author Kuehl, Douglas W. ; Whitaker, Michael J. ; Dougherty, Ralph C. ;
CORP Author Florida State Univ., Tallahassee. Dept. of Chemistry.;Environmental Reseach Lab.-Duluth, MN.
Year Published 1980
Report Number EPA-R-8063340010; EPA-600/J-80-086;
Stock Number PB81-126583
Additional Subjects Chemical analysis ; Chlorine organic compounds ; Residues ; Sampling ; Mass spectroscopy ; Solvent extracts ; Distillation ; Ionization ; Reprints ; Polychlorinated biphenyls ; Toxic substances ; Biological samples ; Gel permeation chromatography ; Chemical ionization mass spectroscopy
Library Call Number Additional Info Location Last
NTIS  PB81-126583 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Abstract Methods were developed for the analysis of polychlorinated chemical residues found in milligram quantities of biological samples. Sample preparation by micro-continuous liquid-liquid extraction steam distillation or by micro gel-permeation chromatography gave sufficiently clean residue extracts for negative chemical ionization analysis. With these techniques, chemicals such as chlorophenols and chlorobiphenyls have been confirmed in human adipose samples as small as 12.5 mg. These methods make it possible to screen less than 1-g samples of biological substrates for contamination with persistant toxic substances at part-per-billion levels.
Supplementary Notes Pub. in Analytical Chemistry 52, p935-940 1980.
NTIS Title Notes Journal article.
Title Annotations Reprint: Micromethods for Toxic Residue Screening by Negative Chemical Ionization Mass Spectrometry.
PUB Date Free Form 1980
Category Codes 7D; 68; 99A
NTIS Prices PC A02/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 323789771
Origin NTIS
Type CAT