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野火诱导的Cr纳米颗粒从轮胎碎片中的释放

Carmen M Villarruel¹, Aaron Goodman², Hark Karkee³

¹Department of Chemistry, Colorado School of Mines, Golden, CO 80401, United States of America.

Journal of hazardous materials

|June 21, 2025

概括

野火从燃烧的轮胎碎 (TCR) 中释放有毒金属纳米粒子,增加了环境流动性. 这项研究强调了呼吸道暴露于这些来自常见城市材料的纳米粒子的风险.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
毒理学毒理学毒理学

背景情况:

野地 - 城市界面 (WUI) 的野火越来越多地影响人为物质.
燃烧材料中微量金属的命运,特别是纳米颗粒,仍未得到充分研究.
轮胎碎 (TCR) 是常见的废旧轮胎副产品,用于城市环境.

研究的目的:

研究野火燃烧对TCR中含有金属的纳米粒子的影响.
为了确定从燃烧的TCR中释放的纳米粒子的元素组成和大小.
评估与这些纳米粒子相关的潜在环境流动性和健康风险.

主要方法:

使用单颗粒感应合等离子体质谱法 (spICP-MS).
分析的重点是来自游乐场的燃烧和未燃烧的TCR中含有金属的纳米粒子 (<100nm).
量化了纳米粒子的元素组成,大小和丰度.

主要成果:

燃烧的TCR是潜在的有毒金属纳米粒子 (Cr,Ni,Zn,Pb,Cu) 的来源.
含有金属的纳米颗粒在燃烧的TCR中显著更多,这表明移动性增加.
在燃烧的TCR中观察到一种独特的,丰富的富含纳米粒子群体.

结论:

野火燃烧将TCR转化为移动,潜在的有毒金属纳米粒子的来源.
这些纳米颗粒的释放构成呼吸道暴露和环境污染的风险.
需要进一步研究广泛使用的人为材料中纳米颗粒的释放.

关键词:

一个粒子ICP-MSMS的单个粒子微量金属微量金属微量金属野生土地-城市接口

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