Record Display for the EPA National Library Catalog

RECORD NUMBER: 31 OF 959

OLS Field Name OLS Field Data
Main Title Acute and chronic toxicity of copper to the estuarine copepod Eurytemora affinis : final report /
Author Hall, L. ; Anderson, R. D. ; Kilian, J. V. ; Lewis, B. L.
Other Authors
Author Title of a Work
Hall, Lenwood W.
CORP Author Maryland Univ., Queenstown. Wye Research and Education Center. ;Delaware Univ., Lewes. Coll. of Marine Studies.;Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program.
Publisher Printed by the U.S. Environmental Protection Agency for the Chesapeake Bay Program,
Year Published 1998
Report Number EPA 903/R/98/005; EPA-CB993438010; CBP/TRS-198/98
Stock Number PB98-126055
OCLC Number 39728651
Subjects Copper--Bioaccumulation--Chesapeake Bay (Md. and Va.) ; Copepoda--Chesapeake Bay (Md. and Va.) ; Atlantic Ocean--Chesapeake Bay.
Additional Subjects Toxicity ; Aquatic animals ; Copper ; Copepods ; Acute exposure ; Toxic substances ; Water chemistry ; Chemical analysis ; Eurytemora affinis ; Heavy metals ; Chesapeake Bay Program
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=2000W2T3.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJDD  CB 00765 OASQA Library/Fort Meade,MD 03/26/1999
NTIS  PB98-126055 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 iii, 34 pages : illustrations ; 28 cm.
Abstract
The objectives of this study were to conduct (48 and 96h) and chronic (8d) copper toxicity tests with the estuarine zooplankter, Eurytemora affinis and develop an acute to chronic ratio (ACR) for this species. Total dissolved copper, copper speciation and organic complexation were measured on selected samples during these toxicity tests. Determination of organic complexation was critical to determine the bioavailability of copper to the test species. Concentrations of total dissolved copper at selected test conditions displayed a loss of 20 to 35% over the course of the acute and chronic experiments with the most signficant loss occurring during the first 48 hours. Due to the reported loss of copper during exposures, a decay model was developed to calculate the concentrations that were used to determine the final toxicity values (adjusted copper concentrations). The 48h LC50, 96h LC50 and 8d chronic values were 83.0, 69,4 and 64 microgram/L dissolved copper, respectively, using the adjusted copper concentrations. An acute to chronic ratio of 1.3 was calculated using the 48 h and 8 d toxicity values.
Notes
"February 1998." Shipping list no.: 98-0765-M. Includes bibliographical references (pages 31-34). "EPA 903/R/98/005"--Cover. Microfiche.