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Title: Difficulties in obtaining representative samples for compliance with the Ballast Water Management Convention
Authors: Carney, Katharine J.; Basurko, Oihane C.; Pazouki, Kayvan; Delany, Jane E.; Desai, D. V.; Anil, A. C.; Marsham, Sara
Citation: MARINE POLLUTION BULLETIN, 2013, 68, 99-105
Abstract: As implementation of the Ballast Water Convention draws nearer a major challenge is the development of protocols which accurately assess compliance with the D-2 Standard. Many factors affect the accuracy of assessment: e.g. large volume of ballast water, the shape, size and number of ballast tanks and the heterogeneous distribution of organisms within tanks. These factors hinder efforts to obtain samples that truly represent the total ballast water onboard a vessel. A known cell density of Tetraselmis suecica was added to a storage tank and sampled at discharge. The factors holding period, initial cell density and sampling interval affected representativeness. Most samples underestimated cell density, and some tanks with an initial cell density of 100 cells ml(-1) showed <10 cells ml(-1) at discharge, i.e. met the D-2 standard. This highlights difficulties in achieving sample representativeness and when applied to a real ballast tank this will be much harder to achieve. (C) 2013 Elsevier Ltd. All rights reserved.
Keywords: Ballast water; D-2 Discharge Standard; Ballast Water Management Convention; Ballast water sampling; Tetraselmis suecica; SHIPS; SYSTEM
Issue Date: 2013
Type: Article
Language: English
DOI: 10.1016/j.marpolbul.2012.12.016
ISSN: 0025-326X
E-ISSN: 1879-3363
Funder: British Council
UK Department for Education and Skills (DfES)
Office of Science and Innovation
FCO, Scotland, Northern Ireland
Appears in Publication types:Artículos científicos

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