学校环境中的微塑料和塑料添加剂:识别,量化和相关的吸入风险
Ana Torres-Agullo1, Angeliki Karanasiou2, Isabella Charres3
1Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
Environment international
|September 4, 2025
概括
儿童暴露在室内空气中的微塑料 (MP) 含量高于室外,造成吸入风险. 这项研究强调了需要在学校监测这些污染物以保护儿童的健康.
科学领域:
- 环境科学
- 分析化学
- 公共卫生
背景情况:
- 室内和室外空气污染对人类健康产生负面影响,
- 微塑料是新出现的环境污染物,
- 学校是评估儿童接触空气污染物的关键环境.
研究的目的:
- 在葡萄牙一所学校评估空气中的微塑料度和吸入风险.
- 识别室内和室外空气中的特定聚合物和同时存在的污染物.
- 评估儿童每天的MP吸入剂量.
主要方法:
- 在冬季和春季从教室和户外区域收集PM10样本.
- 使用热解气色谱与轨道质谱 (Pyr-GC-Orbitrap-MS) 分析空气中的MP.
- 用户感兴趣的区域 - 多变量曲线分辨率 - 交替最小平方 (ROIMCR) 用于同时进行目标和非目标分析.
主要成果:
- 确定了六种聚合物:聚甲基酸,尼龙-6,6,聚烯,乙烯,聚乙烯和聚烯.
- 室内MP度 (21. 8±16. 3 ng/ m3) 显著高于室外MP度 (13. 4±13. 6 ng/ m3).
- 儿童每日MP吸入剂量的中位数为1. 57±0. 93 ng kg bw-1 d-1.
- 检测到同时存在的污染物,包括酸盐,杀虫剂和尼古丁.
结论:
- 这所学校的儿童经常接触到空气中的微塑料和危险的添加剂.
- 较高的室内MP水平强调了教育环境中的室内空气质量的重要性.
- 调查结果强调需要将空气中的PM纳入空气质量评估,以保护儿童的健康.
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