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Publications (5 of 5) Show all publications
Pansch, C., Jonsson, P. R., Berglin, M., Pinori, E. & Wrange, A.-L. (2017). A new flow-through bioassay for testing low-emission antifouling coatings. Biofouling (Print), 33(8), 613-623
Open this publication in new window or tab >>A new flow-through bioassay for testing low-emission antifouling coatings
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2017 (English)In: Biofouling (Print), ISSN 0892-7014, E-ISSN 1029-2454, Vol. 33, no 8, p. 613-623Article in journal (Refereed) Published
Abstract [en]

Current antifouling (AF) technologies are based on the continuous release of biocides into the water, and consequently discharge into the environment. Major efforts to develop more environmentally friendly coatings require efficient testing in laboratory assays, followed by field studies. Barnacles are important fouling organisms worldwide, increasing hydrodynamic drag on ships and damaging coatings on underwater surfaces, and thus are extensively used as models in AF research, mostly in static, laboratory-based systems. Reliable flow-through test assays for the screening of biocide-containing AF paints, however, are rare. Herein, a flow-through bioassay was developed to screen for diverse low-release biocide paints, and to evaluate their effects on pre- and post-settlement traits in barnacles. The assay distinguishes between the effects from direct surface contact and bulk-water effects, which are crucial when developing low-emission AF coatings. This flow-through bioassay adds a new tool for rapid laboratory-based first-stage screening of candidate compounds and novel AF formulations.

Keywords
abamectin, antifouling assay, Balanus (Amphibalanus) improvisus, copper, low-release/emission coatings, static vs flow-through
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-30820 (URN)10.1080/08927014.2017.1349897 (DOI)2-s2.0-85027128607 (Scopus ID)
Available from: 2017-09-06 Created: 2017-09-06 Last updated: 2019-02-05Bibliographically approved
Dahlström, M., Sjögren, M., Jonsson, P. R., Göransson, U., Lindh, L., Arnebrant, T., . . . Berglin, M. (2015). Affinity states of biocides determine bioavailability and release rates in marine paints (ed.). Biofouling (Print), 31(2), 201-210
Open this publication in new window or tab >>Affinity states of biocides determine bioavailability and release rates in marine paints
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2015 (English)In: Biofouling (Print), ISSN 0892-7014, E-ISSN 1029-2454, Vol. 31, no 2, p. 201-210Article in journal (Refereed) Published
Abstract [en]

A challenge for the next generation marine antifouling (AF) paints is to deliver minimum amounts of biocides to the environment. The candidate AF compound medetomidine is here shown to be released at very low concentrations, ie ng ml(-1) day(-1). Moreover, the release rate of medetomidine differs substantially depending on the formulation of the paint, while inhibition of barnacle settlement is independent of release to the ambient water, ie the paint with the lowest release rate was the most effective in impeding barnacle colonisation. This highlights the critical role of chemical interactions between biocide, paint carrier and the solid/aqueous interface for release rate and AF performance. The results are discussed in the light of differential affinity states of the biocide, predicting AF activity in terms of a high surface affinity and preserved bioavailability. This may offer a general framework for the design of low-release paint systems using biocides for protection against biofouling on marine surfaces.

Keywords
Antifouling biocides, Barnacle, Ellipsometry, Release, RP-HPLC, Surface adsorption
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-6828 (URN)10.1080/08927014.2015.1012639 (DOI)25775096 (PubMedID)23625 (Local ID)23625 (Archive number)23625 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2019-07-02Bibliographically approved
Trepos, R., Pinori, E., Jonsson, P. R., Berglin, M., Svenson, J. & Coutinho, R. (2014). Innovative approaches for the development of new copper-free marine antifouling paints (ed.). Journal of Ship and Ocean Technology, 9(4), 7-18
Open this publication in new window or tab >>Innovative approaches for the development of new copper-free marine antifouling paints
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2014 (English)In: Journal of Ship and Ocean Technology, ISSN 1226-5594, Vol. 9, no 4, p. 7-18Article in journal (Refereed) Published
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-27043 (URN)
Note

A3400

Available from: 2016-12-08 Created: 2016-12-08 Last updated: 2018-08-13Bibliographically approved
Pinori, E. & Berglin, M. (2013). The impact of coating hardness on the anti-barnacle efficacy of an embedded antifouling biocide (ed.). Biofouling (Print), 29(7), 763-773
Open this publication in new window or tab >>The impact of coating hardness on the anti-barnacle efficacy of an embedded antifouling biocide
2013 (English)In: Biofouling (Print), ISSN 0892-7014, E-ISSN 1029-2454, Vol. 29, no 7, p. 763-773Article in journal (Refereed) Published
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-6544 (URN)23825 (Local ID)23825 (Archive number)23825 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-08-13Bibliographically approved
Brive, L. & Pinori, E. (2011). Multi-seasonal barnacle (Balanus improvisus) protection achieved by trace amounts of a macrocyclic lactone (ivermectin) included in rosin-based coatings (ed.). Biofouling (Print), 27(9), 941-953
Open this publication in new window or tab >>Multi-seasonal barnacle (Balanus improvisus) protection achieved by trace amounts of a macrocyclic lactone (ivermectin) included in rosin-based coatings
2011 (English)In: Biofouling (Print), ISSN 0892-7014, E-ISSN 1029-2454, Vol. 27, no 9, p. 941-953Article in journal (Refereed) Published
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-6294 (URN)24020 (Local ID)24020 (Archive number)24020 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-08-13Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-8945-9904

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