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生物基微纤维比传统的塑料微纤维更无害:来自虫的证据

W Courtene-Jones^1,2, F De Falco^1,3, F Burgevin⁴

¹School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, U.K.

Environmental science & technology

|November 5, 2024

概括

与聚相比,生物基纤维如粘合剂和细胞具有更高的急性毒性和类似的对的亚致命作用. 在推广生物基材料作为环保替代品之前,进一步测试至关重要.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
材料科学材料科学材料科学

背景情况:

生物基塑料经常被推销为石化塑料的环保替代品.
生物基材料的生态毒性,特别是用于织品和卫生产品的纤维,尚未完全理解.
这些纤维可以通过生物固态肥料进入土壤生态系统,影响土壤生物.

研究的目的:

为了比较生物纤维 (粘合剂,细胞) 与石化纤维 (聚) 的致命和次致命毒性.
评估这些纤维对虫Esenia fetida的影响,这是一个重要的生态系统工程师.
评估生物纤维的生态毒理学特征,以使用它们作为塑料替代品.

主要方法:

无添加剂的粘性纤维,纤维和聚纤维的化学表征.
使用经合组织TG207 (72h过纸方法) 的急性毒性测试 (LC20,NOEC).
在环境相关度 (100毫克/公斤-1) 下进行次致命毒性测试 (28天的土壤暴露,OECD TG222).

主要成果:

粘脂和细胞的LC20值分别为14.00和22.66毫克·L-1,NOEC为0-2.8毫克·L-1.
聚显示LC20值为15.6-31.3毫克·L-1和NOEC值为0-15.6毫克·L-1.
粘液显著减少了子后代的质量;细胞导致与增加的生物化相关的边际生长减少.

结论:

与聚相比,生物基纤维 (,细胞) 在高度下表现出更大的急性毒性.
在生物基和聚纤维之间,对*E. fetida*的致命效应基本上是相似的.
在将生物基材料定位为优越的环境替代品之前,需要进行详细的生态毒性评估.

关键词:

生物聚合物的生物聚合物.环境风险评估环境风险评估收益率收益率是指收益率是指收益率.危险评估危险评估危险评估微塑料是一种微塑料.合成纤维是一种合成纤维.

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