在城市PM中塑料和聚合物10通过热解气体染色学-质谱法
Tatu Martinmäki1,2, Sanna Saarikoski3, Hilkka Timonen3
1Finnish Environment Institute, Research Infrastructure, Mustialankatu 3, 00790, Helsinki, Finland. tatu.martinmaki@syke.fi.
Analytical and bioanalytical chemistry
|May 13, 2025
概括
轮胎磨损和塑料的空气中微塑料存在于城市空气中. 这项研究开发了一种方法来量化PM10中的这些颗粒,发现它们占总颗粒物质的1-3%.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 公共卫生 公共卫生
背景情况:
- 微塑料,包括轮胎和道路磨损颗粒,是无处不在的环境污染物.
- 微塑料对大气颗粒物的贡献仍未得到充分研究.
- 由于吸入,空气中的微塑料对环境和公共卫生构成潜在的风险.
研究的目的:
- 开发和验证一种热分析方法,用于量化城市颗粒物中的微塑料.
- 评估城市环境中空气中的微塑料的存在和含量.
主要方法:
- 在赫尔辛基的一个路边地点抽取PM10 (颗粒<10μm) 的样本.
- 样品的预处理包括同质化和热脱附.
- 使用微炉烧解气体染色学-质谱学进行化学分析.
主要成果:
- 热分析方法在选择性,量化极限,线性,真实性,精度和测量不确定性方面得到了验证.
- 确定了聚乙烯,聚乙烯二甲,聚烯,聚烯,轮胎和道路磨损颗粒.
- 这些微塑料在城市样本中占PM10总质量的1-3%.
结论:
- 建立了一种可靠的方法来量化城市PM10中的空气中微塑料.
- 轮胎和道路磨损颗粒和常见的热塑性塑料是空气中的微塑料的重要组成部分.
- 量化水平提供了对城市环境中人类暴露于微塑料的洞察力.
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