Inter‐laboratory trial of a standardized sediment contact test with the aquatic plant Myriophyllum aquaticum (ISO 16191)

A whole‐sediment toxicity test with Myriophyllum aquaticum has been developed by the German Federal Institute of Hydrology and standardized within the International Organization for Standardization (ISO; ISO 16191). An international ring‐test was performed to evaluate the precision of the test metho...

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Published in:	Environmental toxicology and chemistry Vol. 33; no. 3; pp. 662 - 670
Main Authors:	Feiler, Ute, Ratte, Monika, Arts, Gertie, Bazin, Christine, Brauer, Frank, Casado, Carmen, Dören, Laszlo, Eklund, Britta, Gilberg, Daniel, Grote, Matthias, Gonsior, Guido, Hafner, Christoph, Kopf, Willi, Lemnitzer, Bernd, Liedtke, Anja, Matthias, Uwe, Okos, Ewa, Pandard, Pascal, Scheerbaum, Dirk, Schmitt‐Jansen, Mechthild, Stewart, Kathleen, Teodorovic, Ivana, Wenzel, Andrea, Pluta, Hans‐Jürgen
Format:	Journal Article
Language:	English
Published:	Pensacola, FL Blackwell Publishing Ltd 01-03-2014 SETAC Wiley
Subjects:	Animal, plant and microbial ecology Applied ecology Aquatic Organisms Aquatic plants assay Bioassays Biological and medical sciences Chlorophenols - toxicity Contact Control equipment Criteria ecotoxicological assessment Ecotoxicology Ecotoxicology, biological effects of pollution Effects of pollution and side effects of pesticides on plants and fungi Flowers & plants fresh-water sediments Fundamental and applied biological sciences. Psychology Geologic Sediments - analysis Growth rate growth retardation Hydrology Inhibition Inter-laboratory trial international organizations International standards Life Sciences Macrophytes Magnoliopsida - drug effects Magnoliopsida - growth & development Myriophyllum aquaticum quality Reference Standards Reproducibility of Results river Sediment contact test Sediment toxicity Sediments Toxicity toxicity testing Toxicity Tests - methods Toxicity Tests - standards Toxicology variability Water Pollutants, Chemical - standards Water Pollutants, Chemical - toxicity Laboratory study Haloragidaceae Toxicity Myriophyllum aquaticum Round robin test Sediments Sediment contact test Pollution Macrophytes Phytotoxicity Dicotyledones Angiospermae Spermatophyta ISO standard Aquatic plant Inter-laboratory trial Sediment toxicity SEDIMENT TOXICITY MACROPHYTES MYRIOPHYLLUM AQUATICUM INTER-LABORATORY TRIAL SEDIMENT CONTACT TEST
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Summary:	A whole‐sediment toxicity test with Myriophyllum aquaticum has been developed by the German Federal Institute of Hydrology and standardized within the International Organization for Standardization (ISO; ISO 16191). An international ring‐test was performed to evaluate the precision of the test method. Four sediments (artificial, natural) were tested. Test duration was 10 d, and test endpoint was inhibition of growth rate (r) based on fresh weight data. Eighteen of 21 laboratories met the validity criterion of r ≥ 0.09 d⁻¹ in the control. Results from 4 tests that did not conform to test‐performance criteria were excluded from statistical evaluation. The inter‐laboratory variability of growth rates (20.6%–25.0%) and inhibition (26.6%–39.9%) was comparable with the variability of other standardized bioassays. The mean test‐internal variability of the controls was low (7% [control], 9.7% [solvent control]), yielding a high discriminatory power of the given test design (median minimum detectable differences [MDD] 13% to 15%). To ensure these MDDs, an additional validity criterion of CV ≤ 15% of the growth rate in the controls was recommended. As a positive control, 90 mg 3,5‐dichlorophenol/kg sediment dry mass was tested. The range of the expected growth inhibition was proposed to be 35 ± 15%. The ring test results demonstrated the reliability of the ISO 16191 toxicity test and its suitability as a tool to assess the toxicity of sediment and dredged material. Environ Toxicol Chem 2014;33:662–670. © 2013 SETAC
Bibliography:	http://dx.doi.org/10.1002/etc.2483 istex:E1670931B8910E0DEED9A957A2355A9810820CEC German Federal Environmental Protection Agency (Umweltbundesamt) - No. FKZ: 36301401 ArticleID:ETC2483 ark:/67375/WNG-0SF282KM-4 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0730-7268 1552-8618 1552-8618
DOI:	10.1002/etc.2483