EN ISO 15181-6:2014 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 6: Determination of tralopyril release rate by quantitation of its degradation product in the extract
This part of ISO 15181 specifies a method for determining the amount of tralopyril leached from an antifouling coating into artificial seawater according to the method specified in ISO 15181-1. Tralopyril is unstable in water and degrades hydrolytically to form 3-bromo-5-(4-chlorophenyl)-4-cyano-1H-pyrrole-2-carboxylic acid (BCCPCA). This part of ISO 15181 specifies a method for accelerating the conversion of the leached tralopyril into this degradation product by heat treatment for the quantitative determination of the concentration of the BCCPCA degradation product in the artificial seawater extract and for the final calculation of the leaching rate of tralopyril under the specified laboratory conditions. This part of ISO 15181 is formulated to allow the simultaneous determination of tralopyril and other biocides capable of leaching from a given antifouling coating (e.g. Zineb) by taking separate sub-samples of the artificial, according to ISO 15181- 1 produced seawater extract can be analyzed. When used in conjunction with ISO 15181-1, the practical limits for quantitative determination of washout rates using this method are in the range of 0.36 µg cm-2 d-1 to 270 µg cm-2 d-1. Quantitative determination of lower leaching rates requires the use of an analytical procedure with a limit for the quantitative determination of tralopyril in artificial seawater of less than 2 g/l.
EN ISO 15181-6:2014 Referenced Document
ASTM D6442-06 Standard Test Method for Determination of Copper Release Rate From Antifouling Coatings in Substitute Ocean Water*， 2024-04-20 Update
ISO 15181-1:2007 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 1: General method for extraction of biocides
ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
EN ISO 15181-6:2014 history
2014EN ISO 15181-6:2014 Paints and varnishes - Determination of release rate of biocides from antifouling paints - Part 6: Determination of tralopyril release rate by quantitation of its degradation product in the extract