Bioassays and field immersion tests: a comparison of the antifouling activity of copper-free poly(methacrylic)-based coatings containing tertiary amines and ammonium salt groups.
Biofouling
; 26(7): 769-77, 2010 Oct.
Article
en En
| MEDLINE
| ID: mdl-20818516
ABSTRACT
This paper focuses on the activity spectrum of three dimethylalkyl tertiary amines as potential active molecules and the corresponding ammonium salt-based antifouling (AF) paints. Bioassays (using marine bacteria, microalgae and barnacles) and field tests were combined to assess the AF activity of coatings. Bioassay results demonstrated that the ammonium salt-based paints did not inhibit the growth of microorganisms (except the dimethyldodecylammonium-based coatings) and that the tertiary amines were potent towards bacteria, diatoms, and barnacle larvae at non-toxic concentrations (therapeutic ratio, LC50/EC50, <1). The results from field tests indicated that the ammonium salt-based coatings inhibited the settlement of macrofouling and the dimethylhexadecylammonium-based coatings provided protection against slime in comparison with PVC blank panels. Thus, results from laboratory assays did not fully concur with the AF activity of the paints in the field trial.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pintura
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Ácidos Polimetacrílicos
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Bioensayo
/
Cobre
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Incrustaciones Biológicas
/
Organismos Acuáticos
/
Compuestos de Amonio Cuaternario
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Revista:
Biofouling
Asunto de la revista:
BIOLOGIA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Francia