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Wassergefährdungspotenzial nativer Öle und Fette: Berücksichtigung physikalischer Effekte

Hazard potential of native oils and fats considering physical effects

  • Regulatorische Ökotoxikologie
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Zusammenfassung

Ziel und Hintergrund

Das aquatische Gefährdungspotenzial nativer Öle und Fette wird aufgrund unterschiedlicher Berücksichtigung physikalischer Effekte national und international ungleich bewertet. Nachfolgend wird das Gefährdungspotenzial, das von physikalischen Effekten nativer Öle und Fette ausgeht, anhand von Literaturdaten und wissenschaftlichen Erkenntnissen zusammenfassend dargestellt und damit eine Diskussionsgrundlage für eine einheitliche Bewertung geschaffen.

Ergebnisse und Schlussfolgerungen

Die Daten belegen, dass physikalische Eigenschaften einen beträchtlichen Beitrag zum Gefährdungspotenzial dieser Stoffe für aquatische Gewässerökosysteme leisten können. Dies gilt im Besonderen bei der Risikobetrachtung unbeabsichtigter Stoffaustritte, z.B. in Folge von Unfällen. Die Stoffe verhalten sich im Süßwasser und im Meer grundsätzlich gleich, Süßwassersysteme stellen sogar hinsichtlich physikalischer Effekte ein worst-case-Scenario dar.

Empfehlungen

Die Ergebnisse legen nahe, dass die derzeitige Einstufung nativer Öle und ihrer Derivate als ‚nicht wassergefährdend’, gemäß beispielsweise § 19g Wasserhaushaltsgesetz oder § 4 Gefahrstoffverordnung, neu diskutiert und anhand geeigneter Bewerrungskriterien revidiert werden sollte.

Abstract

Aim and Background

Varying interpretations of the hazard potential of native oils and fats for aquatic ecosystems have led to conflicting international and national regulations. Background is the different consideration of physical effects. This study aimed at compiling published data on behaviour and effects of native oils and fats in water, hereby providing a basis for discussion on adequate classification of these substances.

Results

According to scientific data, physical effects may significantly contribute to the hazard potential of native oils and fats. This is especially important in risk assessment of spills, e.g. in the case of accidents. Basically, these effects are the same in marine and freshwater environments; the latter may even be regarded as worst-case situations with respect to physical effects.

Recommendations

Based on these facts, the German classification of native oils and their derivates as ‘not hazardous to waters’ according e.g. to § 19g of the Water Resources Act and § 4 of the Ordinance of Hazardous Substances should be revised. New criteria need to be incorporated into the evaluation procedure to allow an adequate assessment of these substances regarding physical effects.

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Author information

Authors and Affiliations

  1. Fraunhofer Institut für Molekularbiologie und Angewandte Ökologie, Auf dem Aberg 1, D-57392, Schmallenberg

    Annette Fliedner & Christoph Schäfers

Authors
  1. Annette Fliedner
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  2. Christoph Schäfers
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Corresponding author

Correspondence to Annette Fliedner.

Additional information

ESS-Submission Editor: Dr. Klaus-G. Steinhäuser (klaus-g.stein haeuser@uba.de)

OnlineFirst: 19. Dezember 2007

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Fliedner, A., Schäfers, C. Wassergefährdungspotenzial nativer Öle und Fette: Berücksichtigung physikalischer Effekte. UWSF - Z Umweltchem Ökotox 19, 103–107 (2007). https://doi.org/10.1065/uwsf2006.12.156

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  • DOI: https://doi.org/10.1065/uwsf2006.12.156

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