M00001355
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ISO 15181-6 1st Edition, July 15, 2012 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
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 15181 specifies a method determing the amount
of tralopyril that has been released from an antifouling paint into
artificial seawater in accordance with the procedure given 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 released tralopyril into this
degradation product by heat treatment and quantifying the
concentration of the BCCPCA degradation product in the artificial
seawater extract, and gives the final calculation for the release
rate of tralopyril under the specified laboratory conditions.
This part of ISO 15181 is designed to allow the concurrent
determination of tralopyril and other biocides that can be released
by a given antifouling paint (for example, zineb) through the
analysis of separate sub-samples of an artificial seawater extract
generated in accordance with ISO 15181-1.
When used in conjunction with ISO 15181-1, the practical limits
for quantifying release rates by this method are from 0, 36 µg
cm-2 d-1. The quantitation of release rates
lower than this range requires the use of an analytical method with
a limit of quantitation for tralopyril in artificial seawater of
less than 2 µg/1.