||Determination of Trace Amounts of Selenium in Corn, Lettuce, Potatoes, Soybeans, and Wheat by Hydride Generation/Condensation and Flame Atomic Absorption Spectrometry.
Harn, Mark H. ;
Kuennen, Roy W. ;
Caruso, Joseph A. ;
Fricke, Fred L. ;
||Cincinnati Univ., OH. Dept. of Chemistry.;Health Effects Research Lab., Research Triangle Park, OH.
Trace amounts ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.
||Pub. in Jnl. of Agricultural and Food Chemistry, v29 n4 p792-796 1981.
|NTIS Title Notes
||Reprint: Determination of Trace Amounts of Selenium in Corn, Lettuce, Potatoes, Soybeans, and Wheat by Hydride Generation/Condensation and Flame Atomic Absorption Spectrometry.
|PUB Date Free Form
||6T; 6H; 57Y; 98H
||PC A02/MF A01