评估传统和可生物降解皮片释放的添加剂
Costanza Scopetani1, Agnese Bellabarba2, Giulia Selvolini1
1Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
The Science of the total environment
|April 3, 2025
概括
塑料覆盖膜会将有害的酸盐和塑化剂释放到土壤中,其中聚烯和氧降解聚乙烯在水中出更高的水分. 可生物降解的PBAT在有机溶剂中释放了更多的添加剂,并且所有薄膜的释放随着时间的推移而增加.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 聚合物化学 聚合物化学
背景情况:
- 对于粮食安全和适应气候变化而言,农业覆实践至关重要.
- 由于成本效益和耐用性,塑料薄膜被广泛用于覆盖.
- 人们对塑料添加剂入土壤和作物所带来的环境和健康风险存在担忧.
研究的目的:
- 评估从四种农业片中释放的酸盐和其他可塑剂的排放情况.
- 为了比较聚乙烯 (PE),氧降解聚乙烯 (Oxo-PE),聚烯 (PP) 和可生物降解聚乙烯基甲基甲酸盐 (PBAT) 薄膜的添加剂释放量.
- 评估提取介质和时间对添加物洗的影响.
主要方法:
- 四种类型的覆盖膜 (PE,Oxo-PE,PP,PBAT) 进行了测试.
- 添加剂是使用乙-素混合物和水溶液提取的.
- 添加剂的度被量化,并分析了依赖时间的释放模式.
主要成果:
- 与PBAT和PE相比,聚烯 (PP) 和Oxo-PE在水性环境中释放的甲酸盐和甲酸 (ATBC) 显著更高.
- 当PBAT用有机溶剂提取时,这些化合物的释放量最高.
- 在PBAT和PE薄膜的曝光时间和添加剂释放之间观察到显著的正相关性.
结论:
- 覆盖膜的类型和环境条件显著影响添加剂洗.
- 传统的和可生物降解的皮膜都存在土壤和作物污染的风险.
- 长期监测农业薄膜中的添加剂释放对于环境安全评估至关重要.
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