Paints and varnishes. Determination of release rate of biocides from antifouling paints Calculation of the tolylfluanid and dichlofluanid release rate by determination of the concentration of dimethyltolylsulfamide (DMST) and dimethylphenylsulfamide (DMSA) in the extract

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

29-08-2008

Publisher

British Standards Institution

This part of ISO15181 specifies the apparatus and analytical method for determining the amount of tolylfluanid and dichlofluanid that has been released from an antifouling paint into artificial seawater in accordance with the procedure given in ISO15181-1.

Tolylfluanid and dichlofluanid are unstable in the marine environment and degrade to form dimethyltolylsulfamide (DMST) and dimethylphenylsulfamide (DMSA), respectively. This part of ISO15181 specifies a method for converting the released species into these degradation products, quantifying their concentration in the treated artificial seawater samples, and gives the final calculation for the release rate of tolylfluanid and dichlofluanid under the specified laboratory conditions.

This part of ISO15181 is designed to allow the concurrent determination of tolylfluanid, dichlofluanid and other biocides that can be released by a given antifouling paint (for example, copper) through the analysis of separate sub-samples of an artificial seawater extract generated in accordance with ISO15181-1.

When used in conjunction with ISO15181-1, the practical limits for quantifying release rates by this method are from 1,3µg·cm⁻²·d⁻¹ to 500µg·cm⁻²·d⁻¹. The quantitation of release rates lower than this range will require the use of an analytical method with a lower limit of quantitation for tolylfluanid, dichlofluanid, or both (as appropriate) in artificial seawater than that specified in Clause3 and in 5.1.

Committee	STI/10
DevelopmentNote	Also numbered as BS 3900-K5(2008). (09/2008)
DocumentType	Standard
Pages	26
PublisherName	British Standards Institution
Status	Current

Standards	Relationship
EN ISO 15181-5:2008	Identical
ISO 15181-5:2008	Identical

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