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造塑料:海外国家和地区发现,在模拟造茶叶注水中,尼龙茶袋释放出微塑料

Pramoda Maheshi Jayasekara^1,2, Praveen Abhishek³, Bimsara Sandaruwan Kahandawala^2,4

¹Department of Electrical and Electronic Engineering, Faculty of Engineering, Sri Lanka Institute of Information Technology, Malabe 10115, Sri Lanka. eranga.w@sliit.lk.

Environmental science. Processes & impacts

|January 8, 2026

概括

尼龙茶袋在造过程中释放出微塑料 (MP). 一种新的光学相干断层扫描 (OCT) 方法快速检测和量化这些MP,揭示了儿童更高的潜在暴露.

科学领域:

环境科学环境科学
分析化学分析化学
材料科学材料科学材料科学

背景情况:

尼龙茶袋等消费品中的微塑料 (MP) 释放是一个日益严重的环境和健康问题.
在饮料等复杂矩阵中准确检测和量化MPs在方法上具有挑战性.
人类通过摄入暴露于MPs是一个关键领域,需要强大的分析技术.

研究的目的:

开创一种快速,高分辨率的光学连贯性断层扫描 (OCT) 方法,用于检测和量化尼龙茶袋释放的微塑料.
评估不同造条件 (热,冷,环境) 对MP释放的影响.
估计国会议员从茶饮中获得的每日摄入量,并比较儿童和成人之间的暴露水平.

主要方法:

使用高分辨率光学连贯性断层扫描 (OCT) 与图像处理算法集成,用于在模拟茶叶注入中直接检测和量化MP.
使用尼罗河红色 (NR) 染色和数字显微镜验证的OCT发现.
模拟的造条件包括热 (100°C,1-5分钟),冷 (2°C,1小时) 和环境 (30°C,1小时) 温度.

主要成果:

热造 (5分钟在100°C) 每毫升释放出大量大MP (LMP,>30μm) 和小MP (SMP,12-30μm) 的重要量.
与成年人相比,儿童的每日估计摄入量 (EDI) 显著高于MP.
冷造酒释放的LMP较少,但SMP的数量与热造酒相比相当.

结论:

开发的基于OCT的方法为从包装材料释放的MP量化提供了一个快速和多功能平台.
这种方法有助于全面评估从消费产品中暴露于MP的风险.
建议进一步整合化学和毒理学分析,以完全了解MP风险.

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