Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Interlaboratory Comparison of a 28-Day Toxicity Test with the Polychaete 'Neanthes arenaceodentata'.
Author Pesch, C. E. ; Hoffman, G. L. ;
CORP Author Environmental Research Lab., Narragansett, RI.
Year Published 1985
Report Number EPA/600/D-85/225 ;ERLN-237;
Stock Number PB86-111598
Additional Subjects Toxicology ; Worms ; Comparison ; Variability ; Lethal dosage ; Silver ; Polychaetea ; Neanthes arenaceodentata ; Endosulfan ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB86-111598 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 14p
An interlaboratory comparison of toxicity tests with the polychaete Neanthes arenaceodentata was conducted to determine the amount of variability expected with this test. Six laboratories each conducted two 28-day flow-through tests, one with silver nitrate (AgNO3) as the toxicant and the other with the pesticide endosulfan. Muffled sand (from unpolluted beaches) was used as sediment in the tests. The mean 28-day median lethal concentrations (LC50s) (based on measured concentrations) for the participating laboratories were 165 plus or minus 52micrograms/L and 106 plus or minus 24micrograms/L for the tests with silver and endosulfan, respectively. The ratio of the highest to the lowest LC50 value was 2.33 for silver and 1.81 for endosulfan. Therefore, the variability between laboratories was low for this test.