标准编号：ISO 17556:2019
中文名称：塑料 土壤中塑料材料最终需氧生物分解能力的测定（采用测定密闭呼吸计中需氧量或测定释放的二氧化碳的方法）
英文名称：Plastics — Determination of the ultimate aerobic biodegradability of plastic materials in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved
发布日期：2019-05
标准范围
This document specifies a method for determining the ultimate aerobic biodegradability of plastic
materials in soil by measuring the oxygen demand in a closed respirometer or the amount of carbon
dioxide evolved. The method is designed to yield an optimum degree of biodegradation by adjusting the
humidity of the test soil.
If a non-adapted soil is used as an inoculum, the test simulates the biodegradation processes which take
place in a natural environment; if a pre-exposed soil is used, the method can be used to investigate the
potential biodegradability of a test material.
This method applies to the following materials:
— natural and/or synthetic polymers, copolymers or mixtures of these;
— plastic materials which contain additives such as plasticizers or colorants;
— water-soluble polymers.
It does not necessarily apply to materials which, under the test conditions, inhibit the activity of the
microorganisms present in the soil. Inhibitory effects can be measured using an inhibition control or
by another suitable method. If the test material inhibits the microorganisms in the soil, a lower test
material concentration, another type of soil or a pre-exposed soil can be used.
标准预览图
立即下载标准文件