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RECORD NUMBER: 40 OF 165

Main Title Facilitated transport of inorganic contaminants in ground water. Part II, Colloidal transport /
Author Puls, R. W.; Powell, R. M.; Clark, D. A.; Paul, C. J.
CORP Author Robert S. Kerr Environmental Research Lab., Ada, OK. ;ManTech Environmental Technology, Inc., Ada, OK.
Publisher U.S. Environmental Protection Agency, Robert S. Kerr Environmental Research Laboratory,
Place Published Ada, OK
Year Published 1991
Report Number EPA/600/M-91/040
Stock Number PB92-114503
OCLC Number 24817085
Subjects Water pollution sampling; Inorganic compounds; Environmental transport; Colloids; Ground water; Field tests; Geochemistry; Tracer techniques; Water flow; Desorption; Adsorption; Path of pollutants; Samples; Particle size; Experimental design; Electrolytes; pH; Flow rate
Subject Added Ent Groundwater--Pollution--Arizona.; Groundwater--Pollution--Maine.; Groundwater--Pollution--North Carolina.; Water, Underground--Pollution--Arizona
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=20009K5W.txt
Holdings
Library   Call Number Additional Info Location Date Modified
EIAD EPA/600/M-91/040 Region 2 Library/New York,NY 11/07/1997
EJAD EPA 600/M-91-040 Region 3 Library/Philadelphia, PA 03/20/1992
EJBD ARCHIVE EPA 600-M-91-040 Headquarters Library/Washington,DC 09/07/2010
EJBD EPA 600-M-91-040 c.1 Headquarters Library/Washington,DC 05/02/2014
EKAM EPA/600/M-91/040 Region 4 Library/Atlanta,GA 05/23/1997
ELBD RPS EPA 600-M-91-040 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
ELBD EPA 600-M-91-040 AWBERC Library/Cincinnati,OH 04/10/1998
EMBD EPA/600/M-91/040 GWERD Library/Ada,OK 06/27/2003
NTIS PB92-114503 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 12 p. : ill. ; 28 cm.
Abstract The project entailed both field and laboratory components. Field studies evaluated routine sampling procedures for determination of aqueous inorganic geochemistry and assessment of contaminant transport by colloidal mobility. Research at three different metal-contaminated sites has shown that 0.45 micrometer filtration has not removed potentially mobile colloids, when samples have been collected using low pumping flow rates (approximately 0.2-0.3 L/min). However, when pumping velocities greatly exceed formation groundwater flow velocities, large differences between filtered and unfiltered samples are observed, and neither are representative of values obtaine with the llow flow-rate pumped samples. In controlled laboratory experiments, the stability and transport of radio-labeled Fe2O3 model colloids were studied using batch and column techniques. Variables in the study included flow rate, pH, ionic strength, electrolyte composition (anion/cation), colloid concentration, and colloid size. Iron oxide colloids in the 100-900 nm particle diameter range were not only mobile to a significant extent, but under some hydrogeochemical conditions were transported faster than a conservative tracer, tritium. Particle size and anionic composition together with particle stability provided the highest statistical correlation governing extent of colloidal transport. The rate of colloid-arsenate transport was over 21 times that of the dissolved arsenate.
Notes Caption title. Shipping list no.: 91-586-P. "July 1991." Includes bibliographical references (p. 11-12). "EPA/600/M-91/040."
Supplementary Notes See also PB91-168419. Prepared in cooperation with ManTech Environmental Technology, Inc., Ada, OK.
Access Notes Also issued online.
Author Added Ent
Puls, Robert W.
Corporate Au Added Ent Robert S. Kerr Environmental Research Laboratory.
PUB Date Free Form 1991
Series Title Traced Environmental research brief
Ti Tra Differently Colloidal transport.
NTIS Prices PC A03/MF A01
BIB Level m
OCLC Time Stamp 20100831071700
Cataloging Source OCLC/T
Language eng
SUDOCS Number EP 1.96:600/M-91/040
Origin OCLC
Type CAT
OCLC Rec Leader 01731cam 2200409Ia 45020