Record Display for the EPA National Library Catalog

RECORD NUMBER: 46 OF 88

Main Title Large-Scale Preparation of Potassium Hydroxide-Modified Silica Gel Adsorbent.
Author Lebo, J. A. ; Zajicek, J. L. ; May, T. W. ; Smith., L. M. ;
CORP Author Environmental Research Lab.-Narragansett, Newport, OR. Mark O. Hatfield Marine Science Center. ;National Fisheries Contaminant Research Center, Columbia, MO.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/182;
Stock Number PB90-140880
Additional Subjects Chemical analysis ; Potassium silicates ; Adsorbents ; Environmental surveys ; Chromatographic analysis ; Separation ; Potassium hydroxides ; Silica gel ; Laboratory equipment ; Chemical engineering ; Reprints ; Chemical preparation ; Small systems
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB90-140880 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Abstract
A large-scaled method, using custom-made apparatus, is described for making potassium hydroxide-modified silica gel. Batches as large as 2.3 kg can be made in 16 man-hours. A smaller-scale version of the method, requiring no specialized apparatus, is also described. The method can be used to integrate this adsorbent into many sample-enrichment procedures. Many environmental contaminants of worldwide interest (e.g., polychlorinated biphenyls, polycyclic aromatic hydrocarbons, chlorinated dibenzodioxins and dibenzofurans, and many organochlorine pesticides) can be eluted from potassium silicate (KS).