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(D_(t))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D_(t)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(M_(C))位数修约、f_(TC重复性)和m_(TC)。通过对试验进行优化后的结果表明,使D_(t)的不确定度分量集中在f_(试验组重复性)、f_(空白组重复性)和f_(TC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D_(t)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u_(c)(D_(t)),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。
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 D_(t).After the normalization and visualization of uncertainty components according to the combination,the main uncertainty components of f_(repeatability of test group),f_(repeatability of blank group),M_(C) round,f_(repeatability of TC),and mTC were confirmed.The main uncertainty components of the three A-class uncertainties of f_(repeatability of test group),f_(repeatability of blank group) and f_(repeatability of TC) were concentrated after the optimization,and the other uncertainty components could be ignored.The standard uncertainty of D_(t) could be calculated quickly by three A-class uncertainties after simplification.This concluded more than 90%of the u_(c)(D_(t))by holistic computation and provided the example for the evaluation of the uncertainty in degradation performance test of degradable plastic.
作者
林健辉
卢嘉慧
吴欣颖
范雪滢
邓桂荣
高亮
梅承芳
杨永刚
LIN Jianhui;LU Jiahui;WU Xinying;FAN Xueying;DENG Guirong;GAO Liang;MEI Chengfang;YANG Yonggang(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)
出处
《中国塑料》
CAS
CSCD
北大核心
2022年第9期140-147,共8页
China Plastics
基金
广东省重点领域研发计划项目(2020B1111380003)。
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
degradable plastic
degradation performance
controlled composting conditions
percentage biodegradation
uncertainty
