Approved Work Item
ISO/AWI 23292
Plastics — A method for measuring the amount of bacteria in the hydrosphere biodegradability assessment
Reference number
ISO/AWI 23292
Edition 1
Approved Work Item
ISO/AWI 23292
89669
A working group has prepared a draft.

Abstract

This document defines methods that measure amounts of bacterial cells or a marker gene DNA to obtain the total abundance in environmental aqueous samples, such as seawater and river water, for biodegradability assessment. Amounts of a marker gene DNA enable to give a prediction of abundance of bacterial cells by using a conversion factor such as average number of the marker gene homologues in a bacterial cell. The methods could be also applicable to aqueous samples artificially enriched with bacterial cells released from environmental sediments. In addition, this document is applicable to solution with bacteria extracted from environmental sediments and plastic surfaces, where appropriate pre-treatment might be defined elsewhere. In the document, the method provides measurement of prokaryotic bacterial cells, though eukaryotic microorganisms are out of scope.

General information

  •  : Under development
    : New project registered in TC/SC work programme [20.00]
  •  : 1
  • ISO/TC 61/SC 14
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Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

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