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DIGITAL.CSIC
Article . 2011 . Peer-reviewed
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Interlaboratory assessment of marine bioassays to evaluate the environmental quality of coastal sediments in Spain. II. Bioluminescence inhibition test for rapid sediment toxicity assessment

Authors: Casado-Martínez, M. C.; Campisi, T.; Díaz, A.; Obispo, R.; Postma, J. F.; Riba, Inmaculada; Sneekes, A. C.; +2 Authors

Interlaboratory assessment of marine bioassays to evaluate the environmental quality of coastal sediments in Spain. II. Bioluminescence inhibition test for rapid sediment toxicity assessment

Abstract

[ES] El presente trabajo resume el ejercicio interlaboratorio realizado para evaluar la variabilidad del ensayo Microtox® sobre fase sólida. El ejercicio se dividió en dos fases consecutivas, cada una de ellas desarrollada sobre seis muestras de sedimento de puertos españoles. La Fase I incluyó seis laboratorios y se obtuvieron resultados para el protocolo SPT (Solid Phase Test). La Fase II incluyó siete laboratorios y, además de obtenerse resultados del protocolo SPT, tres de ellos utilizaron también el protocolo para la fase sólida BSPT (Basic Solid Phase Test). Si bien se han identificado factores que pueden tener un cierto efecto sobre los resultados, y por lo tanto en la clasificación de las muestras, los coeficientes de variación obtenidos pueden considerarse entre los valores normales para ensayos biológicos. Si esto se tiene en cuenta para el análisis de los resultados, especialmente para los de la Fase I, la variabilidad baja considerablemente. El protocolo BSPT obtuvo resultados más consistentes que el protocolo SPT aun contando sólo con los resultados de un número reducido de laboratorios. La mayor simplicidad del ensayo pudo ser la causa de esta menor variabilidad.

[EN] The Microtox® bioassay was tested in an interlaboratory study to evaluate the variability when using solid-phase samples. The exercise consisted of two consecutive phases each one carried out with six sediment samples from Spanish ports. Phase I included six laboratories that reported results for the solid-phase test (SPT) protocol, while Phase II included seven laboratories for the SPT protocol and three laboratories for the basic solid-phase test (BSPT) protocol. Even though some interfering factors were identified that could affect the results and sample classification, the coefficients of variation (CV) can be considered in the range for biological tests. When these factors are considered for further assessments, interlaboratory variability is significantly reduced. The BSPT showed lower CV values than the SPT despite the small number of participating laboratories. This better performance may be explained either by the simplicity of the methodology.

Parte del trabajo fue subvencionado por el Programa Nacional del Ministerio Español de Ciencia y Tecnología (REN2002_01699/TECNO). MC Casado-Martínez agradece la financiación del Ministerio Español de Educación y Ciencia en el programa de becas de Formación de Personal Investigador (FPI).

10 páginas, 1 figura, 6 tablas.

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Country
Spain
Related Organizations
Keywords

Material de dragado, Round robin test, Microtox, Dredged material, Vibrio fischeri, Variabilidad interlaboratorio

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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