中国塑料 ›› 2022, Vol. 36 ›› Issue (9): 140-147.DOI: 10.19491/j.issn.1001-9278.2022.09.019

• 标准与测试 • 上一篇    下一篇

受控堆肥条件下可降解材料最终需氧生物分解能力测定的不确定度评定研究

林健辉, 卢嘉慧, 吴欣颖, 范雪滢, 邓桂荣, 高亮, 梅承芳(), 杨永刚   

  1. 广东省科学院微生物研究所,广东省微生物分析检测中心,华南应用微生物国家重点实验室,广东省菌种保藏与应用重点实验室,广州 510070
  • 收稿日期:2022-06-16 出版日期:2022-09-26 发布日期:2022-09-26
  • 通讯作者: 梅承芳(1979—),女,正高级工程师,从事生态毒理与环境风险评估研究,meichf@gdim.cn
    E-mail:meichf@gdim.cn
  • 基金资助:
    广东省重点领域研发计划项目(2020B1111380003)

Study of uncertainty evaluation in determination of ultimate aerobic biodegradability of degradable materials under controlled composting conditions

LIN Jianhui, LU Jiahui, WU Xinying, FAN Xueying, DENG Guirong, GAO Liang, MEI Chengfang(), YANG Yonggang   

  1. Institute of Microbiology,Guangdong Academy of Sciences,Guangdong Detection Center of Microbiology,State Key Laboratory of Applied Microbiology Southern China,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application,Guangzhou 510070,China
  • Received:2022-06-16 Online:2022-09-26 Published:2022-09-26
  • Contact: MEI Chengfang E-mail:meichf@gdim.cn

摘要:

基于可降解塑料的降解性能测试周期长、影响因素多导致其不确定度评定的过程较为复杂的原因,对受控堆肥条件下材料最终需氧生物分解百分率(Dt)开展了不确定度评定,并根据各不确定度分量的合成方法,对其进行归一化及可视化处理,得到Dt的主要不确定度分量为f试验组重复性f空白组重复性、碳原子摩尔质量(MC)位数修约、fTC重复性和mTC。通过对试验进行优化后的结果表明,使Dt的不确定度分量集中在f试验组重复性f空白组重复性fTC重复性3项A类标准不确定度上,其他的不确定度分量由于占比较小,均可忽略;简化后Dt的标准不确定度,只需要通过3项A类标准不确定度评定就能快速计算得到,省去了需要根据试验周期计算每天试验所产生的不确定度分量;简化计算得到的结果包含了90 %以上的经完整计算得到ucDt),为可降解塑料降解性能测试的不确定度评定提供了思路及范例。

关键词: 可降解塑料, 降解性能, 受控堆肥, 生物分解百分率, 不确定度

Abstract:

There is no relevant literature report about the evaluation of uncertainty in degradation performance test of degradable plastic. A measurement uncertainty of the ultimate aerobic biodegradability of materials was evaluated under controlled composting conditions of Dt. After the normalization and visualization of uncertainty components according to the combination, the main uncertainty components of frepeatability of test groupfrepeatability of blank groupMC round, frepeatability of TC, and mTC were confirmed. The main uncertainty components of the three A⁃class uncertainties of frepeatability of test groupfrepeatability of blank group andfrepeatability of TC were concentrated after the optimization, and the other uncertainty components could be ignored. The standard uncertainty of Dt could be calculated quickly by three A⁃class uncertainties after simplification. This concluded more than 90 % of the ucDt) by holistic computation and provided the example for the evaluation of the uncertainty in degradation performance test of degradable plastic.

Key words: degradable plastic, degradation performance, controlled composting conditions, percentage biodegradation, uncertainty

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