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在中国沈阳,对粒子相关氧化潜力和多环芳香化合物的源分析

Siwei Wei¹, Zidan Zhang¹, Yuta Kamiya¹

¹Graduate School of Energy Science, Kyoto University, Yoshida-Honmachi, Sakyo-Ku, Kyoto, 606-8501, Japan.

Environmental science and pollution research international

|February 24, 2025

概括

在沈阳,大气中的颗粒物在冬季显著增加氧化潜力 (OP). 生物质燃烧是OP和特定的多环芳的主要来源,影响空气质量.

科学领域:

环境科学环境科学
大气化学大气化学
毒理学毒理学毒理学

背景情况:

大气中的颗粒物 (PM) 由于其氧化潜力 (OP) 存在重大健康风险.
了解PM的来源和化学成分对于评估其对健康的影响至关重要.
对于有效的空气质量管理,需要对PM度和OP的季节性变化进行调查.

研究的目的:

在中国沈阳评估大气颗粒物的氧化潜力 (OP).
确定导致总悬浮颗粒物 (TSP) OP的主要来源.
调查TSP组件,包括多环芳 (PAH) 和OP之间的关系.

主要方法:

使用迪三醇 (DTT) 试验来测量基于体积的DTT消耗率 (DTTv) 作为OP的指标.
采用正矩阵分解 (PMF) 模型来识别和量化TSP和相关OP的来源.
在TSP中分析了各种多环芳香化合物的度.

主要成果:

冬季的平均每日TSP度和DTTv比夏季高.
生物质燃烧 (31.0%) 被确定为最大的OP来源.
煤炭燃烧是PAHs的主要来源,而生物质燃烧对氧化和化PAHs贡献最大.

结论:

季节性变化对沈阳PM的氧化潜力有很大影响,冬季带来更大的风险.
生物质燃烧和煤炭燃烧是通过OP和PAHs导致空气污染和相关健康风险的主要原因.
使用PMF的来源分配为有针对性的空气污染控制策略提供了关键数据.

关键词:

迪西利醇测定方法有氧化潜力可能存在.多环芳香化合物多环芳香化合物多环芳香碳化合物多环芳香碳化合物阳性矩阵分解因子是正的.来源分配的分配方式

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