在聚光灯下回收轮胎材料. 确定危险和致命物质的确定
Andres Duque-Villaverde1, Daniel Armada1, Thierry Dagnac2
1CRETUS, Department of Analytical Chemistry, Nutrition and Food Science, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
The Science of the total environment
|April 24, 2024
概括
研究人员开发了一种方法来检测回收轮胎的碎中的有害化学物质. 这些化学物质,包括6PPD-,在人造草和游乐场中发现,但不在替代填充材料中.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 回收轮胎碎被用于人造草和游乐场,引发了健康和环境问题.
- 碎中的微塑料可以释放出令人担忧的化学物质.
- 现有的分析方法有限,用于检测充填材料中的特定轮胎衍生化合物.
研究的目的:
- 开发和验证一种分析方法,用于确定轮胎碎中的11种关键化合物.
- 量化来自各种应用的真实世界碎样本中的目标化合物.
- 为了分析这些化合物存在的替代填充材料.
主要方法:
- 超声辅助提取 (UAE),然后进行液体染色学-并联质谱学 (LC-MS/MS).
- 来自体育场,游乐场,路面和轮胎的40个碎样本的分析.
- 对替代填充材料的分析:沙子,软木,热塑性弹性体和子纤维.
主要成果:
- 所有的标分析物被识别并用碎样本量化.
- 在新合成领域中,抗氧化剂6PPD的度高 (高达0.2%).
- 在所有碎样本中检测到6PPD- (高达40μg/g),在大多数游戏表面中检测到HMMM (高达36μg/g).
- 替代填充材料在很大程度上没有目标化合物.
结论:
- 经过验证的UAE-LC-MS/MS方法适用于监测碎中的环境和健康相关化合物.
- 在人造草和游乐场中使用的碎含有6PPD,6PPD-和HMMM.
- 替代填充材料在分析轮胎衍生化学物质方面提供了更安全的选择.
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