Record Display for the EPA National Library Catalog

RECORD NUMBER: 464 OF 1214

OLS Field Name OLS Field Data
Main Title Evaluation of the Adsorption Properties of Silicalite for Potential Application to Isolating Polar Low-Molecular-Weight Organics from Drinking Water.
Author Chriswell, Colin D. ; Gjerde, Douglas T. ; Shultz-Sibbel, Gerda ; Fritz, James S. ; Ogawa, Ikue ;
CORP Author Ames Lab., IA.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1983
Report Number EPA-68-03-2974; EPA-600/1-83-001;
Stock Number PB83-148502
Additional Subjects Water treatment ; Organic compounds ; Adsorption ; Potable water ; Physical properties ; Chemical properties ; Separation ; Silicalite
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB83-148502 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 31p
Abstract
Because of their high affinity for water, low-molecular weight polar organic compounds are difficult to isolate from drinking water as a prelude to their identification and determination. Conventional isolation techniques such as solvent extraction, adsorption, gas purging and reverse osmosis yield only low recoveries when applied to small molecules with water-like chemical and physical properties. In this work the chemical and physical properties of the adsorbent known as Silicalite were explored, the characteristics of the molecular sieve for accumulating analytes from aqueous and from gaseous streams were elucidated, techniques were developed for recovering adsorbed organic materials from the molecular sieve adsorbent, and an analytical protocol was developed for determining low-molecular weight analytes such as dichloroacetonitrile in standard samples. When the procedure was optimized for the determination of dichloroacetonitrile, quantitative recoveries were obtained on standard samples.