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Main Title Comparison of Grob closed-loop-stripping analysis (clsa) to other trace organic methods /
Author Melton, R. G. ; Coleman, W. E. ; Slater, R. W. ; Kopfler, F. C. ; Allen, W. K.
Other Authors
Author Title of a Work
Coleman, W. E.
Slater, R. W.
Kopfler, F. C.
Allen, W. K.
Aurand, T. A.
Mitchell, D. E.
Voto, S. J.
CORP Author Health Effects Research Lab., Cincinnati, OH.
Publisher U.S. Environmental Protection Agency,
Year Published 1981
Report Number EPA-600/D-81-060
Stock Number PB81-211450
OCLC Number 07654728
Subjects Drinking water--Contamination
Additional Subjects Water treatment ; Water analysis ; Organic compounds ; Comparison ; Potable water ; Chemical analysis ; Trace elements ; Gas chromatography ; Mass spectroscopy ; Adsorption ; Trace elements ; Grob closed-loop stripping analysis ; EPA method 601 ; Bellar purge and trap analysis ; XAD-2 resin ; NTISEPAORD
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-D-81-060 Headquarters Library/Washington,DC 07/07/2015
ELBD ARCHIVE EPA 600-D-81-060 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB81-211450 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 96 pages : illustrations ; 28 cm
This paper presents a comparison of experimental results from the analysis of drinking water before and after water treatment using 1 million gallon per day (mgpd) granular activated carbon (GAC) contactors at the Cincinnati Water Works. The following methods of organic analysis were used: (1) Grob closed-loop stripping analysis (CLSA) using capillary GC/MS/DS, (2) Bellar purge and trap (P&T) using packed column GC/Hall/DS, ie, EPA Method 601, (3) Batch Liquid - Liquid Extraction (BLLE) using capillary GC/MS/DS, and (4) XAD-2 adsorption - ethyl ether elution (XAD-EEE) capillary GC/MS/DS. At least twice as many 'consent decree' organics (23) and the 'EPA Office of Drinking Water chemical indicators of industrial contamination' (18) were measured by Grob CLSA than by Bellar P&T, BLLE, and XAD-EEE analyses. Furthermore, Grob CLSA produced this superior analysis at a low cost-per-compound-analyzed figure. Of the 183 different organics which were measured by the four methods, six organics were detected by Bellar P&T, 107 by Grob CLSA, 90 by BLLE, and 58 by XAD-EEE analysis. A historical review of Grob CLSA is presented, as well as a brief review of current U.S. P&T methods. The design of a superior analytical scheme for the comprehensive analysis of purgeable organics in drinking water is indicated by the data. The combined use of Bellar P&T (EPA Methods 601 or 502), Grob CLSA, and BLLE analyses provides useful data on the level of many EPA regulated organics in drinking water.
"February 1981." "EPA 600/D-81-060." Includes bibliographical references (pages 40-43).