Variability in the performance of the 7-dCeriodaphnia dubiasurvival and reproduction test: An intra- and interlaboratory study

Autor:	G. M. Degraeve, J.D. Cooney, N.G. Reichenbach, T.L. Pollock, B.H. Marsh
Rok vydání:	1992
Předmět:	biology Health Toxicology and Mutagenesis media_common.quotation_subject Ceriodaphnia dubia biology.organism_classification Response Variability Industrial effluent Test (assessment) Toxicology Cladocera Toxicity Environmental Chemistry Bioassay Reproduction media_common
Zdroj:	Environmental Toxicology and Chemistry. 11:851-866
ISSN:	1552-8618 0730-7268
DOI:	10.1002/etc.5620110613
Popis:	The U.S. Environmental Protection Agency (EPA) has developed a 7-day Ceriodaphnia dubia survival and reproduction test for measuring the toxicity of effluents. This study evaluated the ease of performance and the intra- and interlaboratory variability of this 7-d test, using two reference toxicants (sodium chloride and potassium dichromate), two pulp and paper effluents, and two utility effluents Eleven different laboratories, representing academia, private industry, contractors, and the state EPA and federal EPA, participated in the study. The reference toxicants were tested twice during two separate test periods, and each industrial effluent was tested once. Using the EPA's criteria for a successful test (®80% survival and ® 15 young per female in controls), 56% of the 116 planned tests were completed as valid tests. Most tests were invalid because the laboratories were unable to initiate the tests successfully or because control survival was
Databáze:	OpenAIRE
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