ISO 18830:2016 PDF
Plastics — Determination of aerobic biodegradation of non-floating plastic materials in a seawater/sandy sediment interface — Method by measuring the oxygen demand in closed respirometer
Plastics — Determination of aerobic biodegradation of non-floating plastic materials in a seawater/sandy sediment interface — Method by measuring the oxygen demand in closed respirometer
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 10 августа 2016 г.
- Издание:
- ISO IS 18830 edition 1 version 1
- ICS:
- 83.080.01
ISO 18830:2016 specifies a test method to determine the degree and rate of aerobic biodegradation of plastic materials when settled on marine sandy sediment at the interface between seawater and the seafloor, by measuring the oxygen demand in a closed respirometer. Measurement of aerobic biodegradation can also be obtained by monitoring the carbon dioxide evolution. This is not in the scope of this International Standard but of ISO 19679. This test method is a simulation under laboratory conditions of the habitat found in different seawater/sediment-areas in the sea, e.g. in a benthic zone where sunlight reaches the ocean floor (photic zone) that, in marine science, is called sublittoral zone The determination of biodegradation of plastic materials buried in marine sediment is outside the scope of this International Standard. The conditions described in this International Standard may not always correspond to the optimum conditions for the maximum degree of biodegradation to occur.
Abstract
Overview
ISO 18830:2016 - Plastics: Determination of aerobic biodegradation of non‑floating plastic materials in a seawater/sandy sediment interface - specifies a laboratory test method to quantify the aerobic biodegradation of plastic materials settled at the interface between seawater and sandy seafloor. The method measures oxygen demand in a closed respirometer (biochemical oxygen demand, BOD) as the primary indicator of biodegradation. This standard simulates benthic/sub‑littoral conditions (photic seafloor) and does not cover plastics buried deep in sediment or CO2‑based measurements (see related standards).
Key topics and technical requirements
- Test principle: Measure O2 consumption (BOD) in closed respirometric flasks containing a sandy sediment solid phase and a seawater liquid phase with the test plastic at the sediment/water interface; compare BOD to theoretical oxygen demand (ThOD) to express % biodegradation.
- Test environment: Incubation in dark or diffuse light at a controlled temperature (preferably 15–25 °C, not exceeding 28 °C, ±2 °C).
- Test material: Preferably film/sheet cut to disks (radius
Технические детали
- Технический комитет
- ISO/TC 61/SC 14 - Environmental aspects
- SKU
- ISO 18830:2016
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