Record Display for the EPA National Library CatalogRECORD NUMBER: 3 OF 3
|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.|
|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|
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).