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BSI
BS EN ISO 15181-3:2007

BS EN ISO 15181-3:2007

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Paints and varnishes. Determination of release rate of biocides from antifouling paints Calculation of the zinc ethylene-bis (dithiocarbamate)(zineb) release rate by determination of the concentration of ethylenethiourea in the extract

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-09-2007

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Supplementary information required for the zineb
   extraction procedure
5 Apparatus
6 Reagents and materials
7 Test samples
8 Procedure
9 Calculation and expression of results
10 Validation of the method
11 Test report
Annex A (normative) Supplementary information required for
                      the zineb extraction procedure
Annex B (informative) Additional information on zineb and ETU
Bibliography

Specifies the apparatus and analytical method for determining the amount of zineb that has been released from an antifouling paint into artificial seawater in accordance with the procedure given in ISO 15181-1.

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

Zineb is released from antifouling paints in the form of ionic ethylene-bis(dithiocarbamate) which is unstable in the marine environment. This part of ISO15181 describes a method for converting the released species into a stable degradation product, ethylenethiourea, and determining its concentration in the treated artificial seawater samples, and gives the final calculation for the release rate of zineb under the specified laboratory conditions.

This part of ISO15181 is designed to generally allow the concurrent determination of zineb 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 the procedure given in ISO15181-1.

When used in conjunction with ISO15181-1, the practical limits on the quantitative measurement of release rates by this method are from 2,9µg·cm–2·d–1 to 500µg·cm–2·d–1. The quantitative measurement of release rates below this range will require the use of an analytical method with a lower limit of quantitation for ethylenethiourea in artificial seawater than the limit specified in 5.1.

Committee
STI/10
DevelopmentNote
Also numbered as BS 3900-K3(2007). (09/2007) Supersedes 05/30109753 DC. (10/2007)
DocumentType
Standard
Pages
24
PublisherName
British Standards Institution
Status
Current
Supersedes

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

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Hardcopy - English
PDF - English
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