煤制备植物产品中的多环芳 (PAH):对环境污染的贡献者
Shan Li1, Xiulong Gao2, Shuquan Zhu3
1State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, Beijing 100083, China; School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
The Science of the total environment
|October 18, 2023
概括
来自煤炭和煤炭的多环芳 (PAH) 构成环境风险. 松团呈现出更高的毒性,需要谨慎管理以防止释放到环境中.
科学领域:
- 环境化学环境化学
- 地质化学 地质化学
- 污染物分析 污染物分析
背景情况:
- 煤和煤是多环芳 (PAHs) 的重要来源.
- 这些PAH可以对环境产生有害影响.
- 了解煤炭加工副产品中的PAH成分对于环境风险评估至关重要.
研究的目的:
- 确定16种优先PAHs (16PAHs) 和化PAHs (aPAHs) 的度和组成.
- 分析各种煤炭和煤样本中的PAH概况.
- 评估诊断比率对源识别的有用性,并评估毒性风险.
主要方法:
- 分析原煤,清理煤,粘液,松和块状煤的分析.
- 对16PAH和aPAH度的量化.
- 评估PAH的组成,化程度和诊断比率.
- 用于毒性评估的佐[a]烯等效度的计算.
主要成果:
- 在不同样本中,PAH度有所不同,清洗后的煤炭显示最高的16PAH和aPAH度.
- 与煤相比,煤团中4-6环PAH的比例较高,化程度较低.
- 诊断比率不足以区分煤/煤和其他PAH来源,但煤比率是集中的.
- 松散带的毒性风险比块带的毒性风险更高.
结论:
- 煤炭和煤炭结合物对环境PAHs有着显著的贡献,其成分各不相同.
- 标准诊断比率可能导致PAH来源识别的不确定性.
- 由于其环境毒性风险较高,slack gangue需要特别注意.
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