本文件规定了一种试验方法，通过测量释放的二氧化碳（CO2）来确定塑料材料在海水和海底交界处的海洋砂质沉积物上沉积时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。购买本文件时可获得的所有当前修订均包含在购买本文件中。

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.All current amendments available at time of purchase are included with the purchase of this document.