BS EN ISO 19679:2020
$102.76
Plastics. Determination of aerobic biodegradation of non-floating plastic materials in a seawater/sediment interface. Method by analysis of evolved carbon dioxide
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 20 |
This document 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 evolved carbon dioxide (CO2). This test method can also be applied to other solid materials.
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 and other solid materials buried in marine sediment is outside the scope of this document.
Measurement of aerobic biodegradation can also be obtained by monitoring the oxygen consumption, as described in ISO 18830 .
The conditions described in this document do not always correspond to the optimum conditions for the maximum degree of biodegradation to occur.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Principle 5 Test environment 6 Reagents |
| 11 | 7 Apparatus 8 Procedure 8.1 Test material |
| 12 | 8.2 Reference material 8.3 Preparation of the sediment 8.4 Test setup 8.5 Pre-conditioning phase |
| 13 | 8.6 Start of the test 8.7 Carbon dioxide measurement |
| 14 | 8.8 End of the test 9 Calculation and expression of results 9.1 Calculation 9.1.1 Amount of CO2 produced |
| 16 | 9.1.2 Percentage of biodegradation 9.2 Visual inspection 9.3 Expression and interpretation of results |
| 17 | 10 Validity of results 11 Test report |
| 18 | Annex A (informative) Example of respirometric system based on CO2 measurement |
| 19 | Bibliography |
