Summary
Ship owners coat the wetted surface of vessels with toxic paints to prevent fouling which increases fuel consumption. The active biocides in the paints are mainly TBT (tributyl tin), copper, and organonitrogen compounds. The amounts of biocides emitted by the German fleet and the world fleet are estimated, and the theoretical concentrations of biocides in the North Sea caused by shipping are valididated by measurements of other authors.
Zusammenfassung
Die vom Seewasser benetzte Außenhaut von Schiffen wird mit giftigen Farben beschichtet. Damit verhindert man die Besiedelung durch Organismen, das ‘fouling’, das den Widerstand der Schiffe und damit den Brennstoffverbrauch steigert. Die aktiven Biozide der Farben bestehen hauptsächlich aus TBT (Tributyl-Zinn), Kupfer und Organo-Stickstoff-Verbindungen (S-Triazine). Für die deutsche Flotte und die Weltflotte werden Mengen der Biozide überschläglich berechnet. Außerdem wird die theoretische Konzentration der emitierten Biozide in der Nordsee vom Schiffsverkehr abgeleitet und mit Messungen anderer Autoren verglichen.
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Isensee, J., Watermann, B. & Berger, HD. Emissions of antifouling-biocides into the North Sea —an estimation. Deutsche Hydrographische Zeitschrift 46, 355–365 (1994). https://doi.org/10.1007/BF02226311
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DOI: https://doi.org/10.1007/BF02226311