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RECORD NUMBER: 2 OF 2

OLS Field Name OLS Field Data
Main Title Determination of Trace Amounts of Selenium in Corn, Lettuce, Potatoes, Soybeans, and Wheat by Hydride Generation/Condensation and Flame Atomic Absorption Spectrometry.
Author Harn, Mark H. ; Kuennen, Roy W. ; Caruso, Joseph A. ; Fricke, Fred L. ;
CORP Author Cincinnati Univ., OH. Dept. of Chemistry.;Health Effects Research Lab., Research Triangle Park, OH.
Year Published 1981
Report Number EPA-600/J-81-608;
Stock Number PB83-163428
Additional Subjects Selenium ; Spectroscopy ; Corn ; Lettuce ; Potatoes ; Soybeans ; Wheat ; Concentration(Composition) ; Reprints ; Trace amounts ; Toxic substances
Holdings
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Status
NTIS  PB83-163428 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 6p
Abstract
Because of the nutritional and toxicological significance of low selenium concentrations in agricultural crops, a procedure utilizing wet digestion followed by hydride generation/condensation-flame atomic absorption was developed for the routine analysis of selenium in different varieties of soybeans, wheat, potatoes, lettuce, and sweet corn. The lowest quantifiable level, based on 2 g of sample, is 1 ng/g (dry weight) for all crop types studied. The precision for the total analysis is 3.7% relative standard deviation (RSD) at a mean concentration of 100 ng/g and 13% RSD at a mean concentration of 1 ng/g. Sample recoveries, precision studies, and analyses of NBS reference materials demonstrate the reliability and accuracy of this technique. A summary of results for 830 crop samples is reported.