食品中的蒂拉姆和常见的微塑料的相互作用和机制研究以及与之相关的危险变化
Qingrun Liu1, Dajun Wu2, Yulun Chen1
1State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China.
Journal of hazardous materials
|September 16, 2023
概括
微塑料 (MPs) 很容易吸附诸如蒂拉姆等农药,吸附受到MP年龄和环境因素的影响. 吸附到MP的西拉姆显示了增加的生物可用性,构成更大的食品安全风险.
科学领域:
- 环境科学 环境科学
- 食品安全 食品安全
- 分析化学 分析化学
背景情况:
- 微塑料 (MP) 是生态系统和食品中普遍存在的环境污染物.
- 国会议员具有使其能够吸附其他污染物,如杀虫剂的特性.
- 议员和农药之间的相互作用引起了人们对食品安全和污染物运输的担忧.
研究的目的:
- 为了研究蒂拉姆对四种常见类型的微塑料的吸附行为.
- 为了分析THIRAM在MPs上吸附后的危险变化和生物可用性.
- 了解影响吸附过程的因素及其对食品系统的影响.
主要方法:
- 吸附动力学和异热学研究使用伪二阶和朗慕尔模型.
- 热力学分析以确定吸附的自发性和外热性.
- 对MP老化,pH,离子强度和食物矩阵 (果汁) 吸附等因素的调查.
- 在吸附在PVC和PET微塑料上后,对提拉姆的生物利用度的评估.
主要成果:
- 吸附遵循伪二次动力学和兰木尔等温,由范德瓦尔斯力主导.
- 吸附是自发的和外热的,其容量受到MP表面部位和衰老的影响.
- 增加的离子强度 (盐度,果汁) 显著增强了对MPs的提拉姆吸附.
- 通过PVC和PET微塑料吸收的提拉姆的生物可用性大幅增加.
结论:
- 微塑料在食品系统中充当农药残留的重要载体.
- 吸附过程受到表面特性和环境条件的控制.
- 微塑料污染和吸附农药的联合风险需要仔细考虑食品安全问题.
- 老年MP和特定的环境条件提高了农药吸附和随后的生物可用性.
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