Identification of commercial and recreational vessels coated with banned organotin paint through screening of tin by portable XRF
Journal article, 2019

The most effective biocide used historically in antifouling paints is tributyltin (TBT). However, due to its extreme toxicity to non-target organisms and its persistence in the environment, the use of TBT and other organotin compounds (OTCs) was restricted in EU on leisure boats and ships in 1989 and 2003, respectively. Nevertheless, studies worldwide still report TBT to be released from both ships and leisure boats. Here, we present a new application for a field portable X-ray fluorescence spectrometer (XRF) used for screening for organotin paint through measurements of tin (Sn) on leisure boats and ships. Measurements on ships built after the restrictions showed concentrations of up to 68 μg Sn/cm2, likely due to impurities of inorganic Sn, as shown through chemical analysis of 21 organotin-free paints. A threshold value of 100 μg Sn/cm2is suggested, where exceedance indicates presence of OTCs. Screening with the XRF method showed 10% of the commercial vessels (n = 30) and 23–29% of leisure boats (n = 693, investigated in this and in a previous study) to hold concentrations exceeding 100 μg Sn/cm2. The XRF technique presented here provides a useful tool for quick screening and identification of vessels holding banned organotin paint.

Antifouling paint

Organotin compounds

Tin

TBT

XRF

Author

Maria Lagerström

Chalmers, Mechanics and Maritime Sciences, Maritime Studies, Maritime Environmental Sciences

Daniel Yngsell

Chalmers, Mechanics and Maritime Sciences, Maritime Studies, Maritime Environmental Sciences

B. Eklund

Stockholm University

Erik Ytreberg

Chalmers, Mechanics and Maritime Sciences, Maritime Studies, Maritime Environmental Sciences

Journal of Hazardous Materials

0304-3894 (ISSN)

Vol. 362 107-114

Driving Forces

Sustainable development

Subject Categories

Analytical Chemistry

Environmental Sciences

DOI

10.1016/j.jhazmat.2018.09.038

More information

Latest update

12/10/2018