从农业塑料膜中释放到水中的添加剂:实验和建模
Yiwen Xu1,2, Lingzao Zeng1,2, Yufeng Tao1,2
1Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China.
Environmental science & technology
|June 28, 2023
概括
农业塑料薄膜会将有害的添加剂释放到环境中. 这项研究确定了89种添加剂,其中62种被量化,并模拟了它们的释放,突出了塑料污染带来的风险.
科学领域:
- 环境化学环境化学
- 聚合物科学 聚合物科学
- 质谱测量质量谱测量
背景情况:
- 农业塑料薄膜被广泛使用,导致土壤和水被塑料垃圾和添加剂污染.
- 关于这些添加剂从农业塑料中出现和释放的知识有限.
研究的目的:
- 为了确定农业塑料薄膜中的添加剂的发生和质量转移.
- 使用化学描述符预测临界质量转移参数.
主要方法:
- 用高分辨率质谱测量对嫌疑人进行查.
- 一维的Fickian扩散模型.
- 使用亚伯拉罕描述符的线性自由能量关系 (LFER).
主要成果:
- 在40张电影中初步确定了89种添加剂;62种被验证和量化.
- 26种添加剂的水中度在25°C下28天后达到1毫克L.
- 使用亚伯拉罕描述符,可以预测膜-水分区系数和聚合物扩散率.
结论:
- 该研究确定和量化了农业塑料中的众多添加剂,揭示了它们在环境中释放的潜力.
- 开发了质量转移参数的预测模型,有助于风险评估.
- 需要进一步研究这些被忽视的添加剂的环境命运和风险.
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