室内和室外学校环境中pm2.5结合的多环芳烃源特异性风险的二维蒙特卡罗模拟

IF 7.1 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Building and Environment Pub Date : 2025-04-18 DOI:10.1016/j.buildenv.2025.113050

Jelena Obradović , Jelena Vesković , Milena Jovašević-Stojanović , Milan Obradović , Antonije Onjia

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引用次数: 0

摘要

对特定源排放的细颗粒物（PM2.5）结合的多环芳烃（PAHs）在学校环境中的概率健康风险进行了评估。在采暖季和非采暖季采集的室内和室外PM2.5样本中，检测了16种重点多环芳烃。与PM2.5结合的总多环芳烃（ΣPAHs）平均浓度在室内低于室外，其中ΣPAH浓度在采暖季（11.1±2.3 ng/m3，室外12.5±4.2 ng/m3）显著高于非采暖季（8.2±1.6 ng/m3，室外9.9±3.0 ng/m3）。其中苊、苯并[b]氟蒽和苯并[k]氟蒽含量最高。多环芳烃诊断比值和正矩阵分解结果表明，采暖季车辆排放、天然气、生物质和煤炭燃烧是多环芳烃的主要来源，非采暖季交通是多环芳烃的主要来源。使用苯并[a]芘（BaP）当量估算的ΣPAHs的平均总致癌性在室内为0.99 ng/m3，在室外为1.1 ng/m3，而苯并[a，h]蒽是风险最高的贡献者。二维蒙特卡罗模拟显示，多环芳烃暴露在学校环境中的平均终生肺癌风险（LLCR）为室内8.65 × 10−5，室外9.63 × 10−5。此外，室内和室外的第95百分位LLCR分别为8.86 × 10−5和9.91 × 10−5。这些结果表明，学生吸入接触与PM2.5结合的多环芳烃具有潜在的健康风险，但仍低于严重风险水平。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Two-dimensional Monte Carlo simulation of source-specific risks from PM2.5-bound polycyclic aromatic hydrocarbons in indoor and outdoor school environments

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Two-dimensional Monte Carlo simulation of source-specific risks from PM2.5-bound polycyclic aromatic hydrocarbons in indoor and outdoor school environments

Probabilistic health risks in school environments from fine particulate matter (PM_2.5) bound polycyclic aromatic hydrocarbons (PAHs) emitted from specific sources were evaluated. The sixteen priority PAHs were examined in PM_2.5 samples collected indoors and outdoors in the heating and non-heating seasons. The average concentrations of total PAHs (ΣPAHs) bound to PM_2.5 were lower indoors than outdoors, with ΣPAH concentrations being notably higher in the heating season (11.1 ± 2.3 ng/m³ indoors and 12.5 ± 4.2 ng/m³ outdoors) than in the non-heating season (8.2 ± 1.6 ng/m³ indoors and 9.9 ± 3.0 ng/m³ outdoors). Acenaphthene, benzo[b]fluoranthene, and benzo[k]fluoranthene were the most abundant PAHs. Diagnostic PAH ratios and positive matrix factorization indicated that vehicular emissions and natural gas, biomass, and coal combustion were the major sources of PAHs during the heating season, whereas traffic was the primary PAH source in the non-heating season. The average total carcinogenicity, estimated using benzo[a]pyrene (BaP) equivalents, was 0.99 ng/m³ indoors and 1.1 ng/m³ outdoors for ΣPAHs, whereas BaP and dibenz[a,h]anthracene were the highest risk contributors. Two-dimensional Monte Carlo simulation revealed the average lifetime lung cancer risk (LLCR) due to exposure to PAHs in school environments of 8.65 × 10⁻⁵ indoors and 9.63 × 10⁻⁵ outdoors. In addition, the 95th percentile of the LLCR was found to be 8.86 × 10⁻⁵ for indoors and 9.91 × 10⁻⁵ for outdoors. These results suggest that the inhalation exposure of students to PAHs bound to PM_2.5 poses potential health risks but remains below the serious risk level.

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来源期刊

Building and Environment 工程技术-工程：环境

CiteScore

12.50

自引率

23.00%

发文量

1130

审稿时长

27 days

期刊介绍： Building and Environment, an international journal, is dedicated to publishing original research papers, comprehensive review articles, editorials, and short communications in the fields of building science, urban physics, and human interaction with the indoor and outdoor built environment. The journal emphasizes innovative technologies and knowledge verified through measurement and analysis. It covers environmental performance across various spatial scales, from cities and communities to buildings and systems, fostering collaborative, multi-disciplinary research with broader significance.