| 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 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| 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. |
