ISO 14855-2:2018 塑料材料在受控堆肥条件下最终需氧生物降解能力的测定 析出二氧化碳的分析方法 第2部分：在实验室级试验中二氧化碳析出的重量分析测量

标准编号：ISO 14855-2:2018

中文名称：塑料材料在受控堆肥条件下最终需氧生物降解能力的测定 析出二氧化碳的分析方法 第2部分：在实验室级试验中二氧化碳析出的重量分析测量

英文名称：Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions — Method by analysis of evolved carbon dioxide — Part 2: Gravimetric measurement of c

发布日期：2018-07

标准范围

本文件规定了一种通过重量法测量释放的二氧化碳量，在受控堆肥条件下测定塑料材料最终需氧生物降解性的方法。该方法旨在通过调节堆肥容器的湿度、通风和温度来产生最佳的生物降解速率。该方法适用于以下材料:-天然和/或合成聚合物和共聚物及其混合物；-含有增塑剂或着色剂等添加剂的塑料材料；-水溶性聚合物；-在试验条件下不会抑制接种物中微生物活性的材料。如果试验材料抑制接种物中的微生物，可以使用另一种成熟堆肥或预暴露堆肥。

This document specifies a method for determining the ultimate aerobic biodegradability of plastic materials under controlled composting conditions by gravimetric measurement of the amount of carbon dioxide evolved. The method is designed to yield an optimum rate of biodegradation by adjusting the humidity, aeration and temperature of the composting vessel.The method applies to the following materials:— natural and/or synthetic polymers and copolymers, and mixtures of these;— plastic materials that contain additives such as plasticizers or colorants;— water-soluble polymers;— materials that, under the test conditions, do not inhibit the activity of microorganisms present in the inoculum.If the test material inhibits microorganisms in the inoculum, another type of mature compost or pre-exposure compost can be used.

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