ISO 23734:2021

Abstract

This document specifies a bioassay for the determination of the presence of unknown toxic contaminants in test seawater (see Figure A.1). It is based on the inhibition of photosynthetic activity of the marine cyanobacterium Cyanobium sp. (NIES-981) by such toxic contaminants. The inhibition is determined based on delayed fluorescence (DF) intensity.

The method is rapid and requires less laboratory space than standard bioassays. Hence, it can be used on-board to generate basic data for seawater quality management at deep-sea mining sites where time and space are extremely limited.

General information

Status
: Published

Publication date
: 2021-07
Edition
: 1

Number of pages
: 17
Technical Committee
: ISO/TC 8/SC 13 Marine technology
ICS
:
13.020.30 Environmental impact assessment

47.020.01 General standards related to shipbuilding and marine structures

This standard contributes to the following Sustainable Development Goal:

Industry, Innovation and Infrastructure

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ISO 23734:2021
Stage: 60.60

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