在塑料消费品中化抛及其转化产品的指纹
O Mendo Diaz1, A Tell2, M Knobloch1
1Swiss Federal Laboratories for Materials Science and Technology Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland.
Chemosphere
|July 22, 2023
概括
可以使用它们独特的碳和同类分布来指纹化 (CPs). 该方法有助于识别CP的来源,减少环境污染和人类健康风险.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
背景情况:
- 甲 (CPs) 是生产量高的化学物质,用于阻燃剂和增塑剂.
- 由于它们的持久性和生物积累,短链CP被规范为持久性有机污染物 (POP).
- CP转化产物,如化烯酸,可以在各种操纵阶段形成.
研究的目的:
- 为了确定含有化 (CP) 的塑料的独特指纹.
- 发展CP指纹作为资源分配和减少环境风险的工具.
主要方法:
- 使用逆相液态染色学分析含有CP的塑料,并与大气压化学电离轨道质谱仪 (RP-LC-APCI-Orbitrap-MS) 相结合.
- 用基于R的自动质谱评估程序 (RASER) 处理质谱数据.
- 从碳/同类的分布和和度中推算出特定的指纹.
主要成果:
- 成功识别并将每样本的4300个离子分配给340个CP的碳/同类物及其转化产品.
- 根据CP及其相关不和化合物的详细成分,建立了特定的指纹.
- 通过RP-LC-APCI-Orbitrap-MS获得的指纹与GC-ECNI-Orbitrap-MS方法获得的指纹进行了比较.
结论:
- CP指纹是源分配研究的一个有前途的工具.
- 这种方法可以有助于减少与CP相关的环境负担和人类健康危害.
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