Record Display for the EPA National Library Catalog

RECORD NUMBER: 13 OF 18

OLS Field Name OLS Field Data
Main Title Sediment Testing Intermittent Renewal System for the Automated Renewal of Overlying Water in Toxicity Tests with Contaminated Sediments.
Author Benoit, D. A. ; Phipps, G. L. ; Ankley, G. T. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Publisher c1993
Year Published 1993
Report Number EPA/600/J-93/278;
Stock Number PB93-222362
Additional Subjects Sediments ; Test equipment ; Water pollution effects ; Toxicity ; Invertebrates ; Portable equipment ; Bacteria ; Safety ; Photographs ; Reprints ; STIR system ; Chironomus tentans
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB93-222362 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/22/1993
Collation 12p
Abstract
A sediment testing intermittent renewal (STIR) system (stationary or portable) for invertebrate toxicity testing with contaminated sediments has been successfully developed and thoroughly tested at ERL-Duluth. Both the stationary and portable systems enable the maintenance of acceptable water quality (e.g. DO) through the capability of automatically renewing overlying water in sediment tests at rates ranging from 1 to 21 volume renewals/day. The STIR system not only significantly reduces the labor associated with renewal of overlying water but also affords a gentle exchange of water that results in virtually no sediment resuspension. Both systems can also be installed in a compact vented enclosure to permit safe testing of hazardous contaminated sediments. To date the STIR system has been used extensively for conducting 10-day bulk sediment tests with Chironomus tentans, Hyalella azteca and Lumbriculus variegatus.