A sediment testing intermittent renewal system for the automated renewal of overlying water in toxicity tests with contaminated sediments
| Autor: | Gerald T. Ankley, Gary L. Phipps, Duane A. Benoit |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Hydrology
Lumbriculus variegatus Environmental Engineering biology Ecological Modeling Environmental engineering Hyalella azteca Sediment Contamination biology.organism_classification Pollution Soil contamination Hazardous waste Environmental science Water quality Water pollution Waste Management and Disposal Water Science and Technology Civil and Structural Engineering |
| Zdroj: | Water Research. 27:1403-1412 |
| ISSN: | 0043-1354 |
| DOI: | 10.1016/0043-1354(93)90020-i |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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