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住宅燃烧中的尺寸解析颗粒和气体中的潜在有毒成分:排放因子和健康风险
Xiao Liu1, Qianqian Xue1, Yingze Tian2
1The State Environmental Protection Key Laboratory of Urban Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
Environment international
|March 7, 2024
概括
住宅燃烧会释放有毒颗粒物 (PM). 清洁的煤炭和炭石减少有机污染物,但潜在的有毒元素 (PTE) 仍然是一个健康风险问题.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 化学 化学 化学
背景情况:
- 来自住宅燃料燃烧的颗粒物 (PM) 对健康构成重大风险.
- 了解颗粒物中有毒成分的排放因子和特征对于风险评估至关重要.
研究的目的:
- 测量来自八种住宅燃料的尺寸解析的 PM 和气体中各种潜在有毒成分 (PTC) 的排放因子 (EF).
- 调查尺寸分布,气体/颗粒分离以及与这些PTC相关的健康风险.
主要方法:
- 对潜在有毒元素 (PTEs),多环芳 (PAHs),氧化多环芳 (OPAHs),甲酸 (PAE),聚环芳 (NPAHs),有机酸 (OPE) 和多双 (PCB) 的测量EFs.
- 在不同的燃料燃烧类型中分析了PTC的尺寸分布和气体/颗粒分区.
- 评估了与住宅燃烧产生的PTC相关的健康风险.
主要成果:
- 与煤和生物质相比,清洁煤和炭酸炭对大多数PTC (PTE除外) 的EF值显著较低.
- PAHs,OPAHs和NPAHs主要在细颗粒中发现 (PM1,~85%),这表明它们是通过化学反应形成的.
- PTE,PAE,OPE和PCB显示出更复杂的尺寸分布,受燃烧条件和燃料特性的影响.
结论:
- 使用清洁的煤炭和高质量的炭酸盐可以大大降低住宅排放中的有机有毒成分带来的健康风险.
- 潜在有毒元素 (PTE) 在减轻住宅燃烧带来的健康风险方面是一个持续的挑战,即使使用更清洁的燃料.
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