Bibliographic Citation
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Title | Development of formulated reference sediments for freshwater and estuarine sediment testing |
Creator/Author | Suedel, B.C. ; Rodgers, J.H. Jr. (Univ. of Mississippi, University, MS (United States). Dept. of Biology) |
Publication Date | 1994 Jul 01 |
OSTI Identifier | OSTI ID: 7265465 |
Other Number(s) | ISSN0730-7268; CODEN: ETOCDK |
Resource Type | Journal Article |
Resource Relation | Environmental Toxicology and Chemistry ; Vol/Issue: 13:7 |
Subject | 540320 -- Environment, Aquatic-- Chemicals Monitoring & Transport-- (1990-) ;560300 -- Chemicals Metabolism & Toxicology; CRUSTACEANS-- SENSITIVITY;FATHEAD MINNOW-- SENSITIVITY;FLIES-- SENSITIVITY;SEDIMENTS-- CONTAMINATION;WATER POLLUTION-- BIOLOGICAL INDICATORS; GENETIC VARIABILITY |
Related Subject | ANIMALS;AQUATIC ORGANISMS;ARTHROPODS;BIOLOGICAL VARIABILITY;DIPTERA;FISHES;INSECTS;INVERTEBRATES;POLLUTION;VERTEBRATES |
Description/Abstract | Sediments collected at various field locations may have chemical and physical constituents that influence test results and may contain organisms that cannot be readily removed.^Thus, reference sediments are needed that can be formulated to match diverse freshwater and estuarine sediments encountered in comprehensive testing programs.^This research evaluated formulated reference sediments in terms of (a) their ability to match field-collected sediments both chemically and physically; (b) their suitability as habitant (survival and reproduction) for typical invertebrate toxicity testing species (Hyalella azteca Saussure, Chironomus tentans Fabricius, and Daphnia magna Straus) during chronic exposures; and (c) their suitability as a substrate for Hyalella azteca, Chironomus tentans, Daphnia magna, Ceriodaphnia dubia Richard, and Pimephales promelas Rafinesque in 14-d whole-sediment exposures.^Formulated reference sediments were prepared to match naturally occurring sediments with respect to particle-size distribution, organic matter, organic carbon, pH, solids, CEC, but not redox potential.^After preparation, a conditioning period of at least 7 d was required for pH stabilization of formulated reference sediments.^In culture experiments, formulated reference sediments was suitable for Hyalella azteca, Chironomus tentans, and Daphnia magna survival and reproduction for 56,40, and 28 d, respectively.^Hyalella azteca, Chironomus tentans, Daphnia magna, Ceriodaphnia dubia and Pimephales promelas survival was [>=] 88% in 14-d exposures to formulated reference sediment.^Formulated reference sediments may reduce some unexplained physical, chemical, or biological toxicity`` of field-collected sediments (e.g., organic matter) that may influence toxicity testing results. |
Country of Publication | United States |
Language | English |
Format | Pages: 1163-1175 |
System Entry Date | 2001 May 13 |
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