从公路到田野:解码老化轮胎和人工草碎片的化学转变
Madison H McMinn1,2, Yuqiao Tang3,4, Phillip Berger1,2
1Department of Chemistry and Chemical Biology, College of Science, Northeastern University, Boston, Massachusetts 02115, United States.
Environmental science & technology
|December 18, 2025
概括
轮胎老化会产生未知的化学物质,造成健康风险. 这项研究确定了新的衍生转化产品和老化标记物,强调了对轮胎和草安全性的进一步研究的需要.
科学领域:
- 环境化学环境化学
- 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:
- 全球轮胎使用量的增加引发了有关衍生化学物质的健康问题.
- 轮胎中的化学物质可以老化,形成潜在的有害,未确定的转化产品.
- 关于各种老化机制如何影响来自不同轮胎来源的化学物质的研究有限.
研究的目的:
- 综合评估不同老化机制对轮胎和人造草中的衍生化学品的影响.
- 为了识别和描述轮胎和草老化过程中形成的转化产品.
- 开发用于老化过程的标记物.
主要方法:
- 暴露轮胎和人造草样本在室外和加速光衰老在干燥和湿条件下12周.
- 使用液体染色学-质谱学分析提取物,用于目标定量,可疑和非目标查.
- 应用时间趋势分析和分子网络来识别转化产品和衰老标记.
主要成果:
- 加快的光衰老和水分显著增加了化学转化和降解的速度.
- 确定了572种潜在的转化产品,包括37种拟议的衰老标志物,如1-黄胺.
- 发现了180种与2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) 相关的特征,包括新的反应产物和潜在的衰老标志物.
结论:
- 轮胎和人造草碎片老化是一个复杂的过程.
- 加速老化和暴露在水中加快了转化产品的形成.
- 对衍生化学品及其老化产品的进一步调查对于评估健康和环境影响至关重要.
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