本文件规定了一种测试方法，通过测量释放的二氧化碳（CO2），确定塑料材料在海水和海底交界处的海洋砂质沉积物上的需氧生物降解程度和速率。本试验方法也适用于其他固体材料。 本试验方法是在实验室条件下模拟在海洋中不同海水/沉积物区域发现的栖息地，例如在阳光照射到洋底的底栖区域（光照区），在海洋科学中，该区域被称为亚热带 对埋藏在海洋沉积物中的塑料材料和其他固体材料的生物降解性的测定不在本文件的范围之内。 注释测量 好氧生物降解也可以通过监测耗氧量获得，如ISO 18830所述。 本文件中描述的条件并不总是与发生最大程度生物降解的最佳条件相对应。

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. NOTE 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.