在金属回收流中,对-和多基基物质的化性
Erin E Bulson1, Kaitlyn J Gruber2, Andrea L Hicks1
1University of Wisconsin-Madison, Department of Civil and Environmental Engineering, 1415 Engineering Drive, Madison, WI 53706, United States.
Journal of hazardous materials
|July 9, 2025
概括
汽车破碎机残留物 (ASR) 是一种潜在的和多基物质 (PFAS) 来源. 这项研究发现,ASR固体含有显著的PFAS水平,短链PFAS入水中,影响环境污染风险.
科学领域:
- 环境化学环境化学
- 废物管理科学 废物管理科学
- 毒理学 毒理学 毒理学
背景情况:
- 汽车破碎机残留物 (ASR) 是汽车回收的重要废物流.
- 和多基基物质 (PFAS) 是令人担忧的持续性环境污染物.
- 在ASR中PFAS的存在和行为尚不清楚.
研究的目的:
- 在ASR固体中量化目标PFAS和可提取有机 (EOF).
- 为了评估PFAS从ASR中的水性.
- 评估ASR作为长期PFAS废物流的潜力.
主要方法:
- 在15个ASR固体样本中定量33个目标PFAS和EOF.
- 测量可浸出水中的PFAS度.
- 对长链和短链完全化酸 (PFAA) 的分析.
主要成果:
- ASR固体含有目标PFAS度在9.4至104.2ng/g之间,主要由长链PFAA.
- 短链PFAA更容易浸出,其水性度从106.8到1015.1 ng/L.
- 通过针对性PFAS分析,ASR固体中超过99%的有机没有被检测到,这表明低估.
结论:
- 在ASR中含有大量的PFAS,可能会浸出到水环境中.
- 短链PFAS特别易于移动,并且可以从ASR中浸出.
- 有针对性的PFAS分析低估了ASR中总有机的含量,强调需要进行全面评估.
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