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New analytical application for metal determination in antifouling paints

Erik Ytreberg (Institutionen för sjöfart och marin teknik, Maritim miljö och energisystem) ; L. Lundgren ; M.A. Bighiu ; B. Eklund
Talanta (0039-9140). Vol. 143 (2015), p. 121-126.
[Artikel, refereegranskad vetenskaplig]

Despite the ban of applying TBT coatings on leisure boats in the late 80s, recent studies show an ongoing spread of TBT from leisure boats, particularly during hull cleaning events. Therefore, countries in EU have adopted expensive measures to clean this wash water. A more cost-efficient measure is to focus directly on the source, i.e. identify leisure boats with high concentrations of TBT and prescribe boat owners to remove the paint. We have developed a new antifouling paint application for a handheld X-ray fluorescence (XRF) analyzer to be used for identifying boats with high area concentrations (μg/cm2) of Sn (indication that the hull contains TBT paint residues). Copper and zinc are also included in the application since these metals are used in the vast majority of today's paints. A blind test with up to four layers of TBT-, copper- and zinc-based paints showed good correlation between XRF-measured area concentrations and chemically analyzed concentrations. Future usage of the applications involves identification of boat hulls in particular with high Sn concentrations and also with high Cu and Zn concentrations. This method has the potential to become a useful tool in regulatory management of existence and use of toxic elements on boat hulls.

Nyckelord: Antifouling paints , Copper , Metals , TBT , XRF , Zinc


Article number 15593.



Denna post skapades 2015-06-23. Senast ändrad 2015-07-31.
CPL Pubid: 218733

 

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Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Maritim miljö och energisystem

Ämnesområden

Materialteknik
Marin teknik

Chalmers infrastruktur