多溴二苯醚在室内粉尘、空气微粒和办公环境气相中的季节性变化及人体暴露特征

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2025-06-05 DOI:10.1016/j.envpol.2025.126581

Bayier Wulijia , You Li , Huan Tao , Liang Wang , Xiaoyong Liao , Hongying Cao , Dan Zhao

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引用次数: 0

摘要

多溴联苯醚（PBDEs）被广泛用作阻燃剂，在室内普遍存在，但对室内多溴联苯醚的长期监测仍然很少。本研究系统地调查了从四个办公室收集的三种室内介质——空气中颗粒（ap, n = 28）、气相（n = 28）和灰尘（n = 47）中多溴二苯醚的季节变化、成分分布和暴露风险。室内气相和粉尘中多溴二苯醚的浓度均以秋季最高，冬季最低。相关分析显示两者呈显著负相关(p <；室内蒸汽BDE-17和BDE-209之间的差异为0.001)，表明高质量的BDE-17可以光降解为低质量的BDE-209。在APs中，12个PBDE同系物（不包括BDE-17和85）表现出显著的正相关(p <；0.05)。玻璃表面粉尘与五溴二苯醚、八溴二苯醚/十溴二苯醚具有较强的相关性（r = 0.79）。风险评估发现，灰尘摄入是主要的接触途径，学生的总接触量最高。皮肤接触暴露在夏季最高，而吸入、皮肤吸收和粉尘摄入在秋季最高。本研究揭示了办公室多溴二苯醚浓度的显著季节性变化，强化了粉尘作为关键暴露途径的重要性，为多溴二苯醚污染控制和健康保护策略提供了科学依据。

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Seasonal variation and human exposure characteristics of PBDEs in indoor dust, airborne particles and vapor phase in office environments

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Seasonal variation and human exposure characteristics of PBDEs in indoor dust, airborne particles and vapor phase in office environments

Polybrominated diphenyl ethers (PBDEs) are widely used as flame retardants and are prevalent indoors, yet long-term monitoring of indoor PBDEs remains rare. This study systematically investigated the seasonal variations, compositional profiles, and exposure risks of PBDEs across three indoor media—airborne particles (APs, n = 28), vapor phase (n = 28), and dust (n = 47)—collected from four offices. Seasonal trends of PBDEs showed the highest concentrations in autumn and the lowest in winter in both the indoor vapor phase and dust. Correlation analysis revealed a significant negative correlation (p < 0.001) between indoor vapor BDE-17 and BDE-209, suggesting photodegradation of high-weight to low-weight BDEs. In APs, twelve PBDE congeners—excluding BDE-17 and 85—exhibited significant positive correlations (p < 0.05) with PM concentrations. Dust on glass surfaces showed strong correlations between penta-BDEs and octa-/deca-BDEs (r = 0.79). Risk assessments found that dust ingestion was the primary exposure pathway, with students exhibiting the highest total exposure. Dermal contact exposure reached its highest levels in summer, while inhalation, dermal absorption, and dust ingestion were highest in autumn. This study reveals significant seasonal variations in office PBDE concentrations and reinforces the importance of dust as a critical exposure pathway, providing a scientific basis for PBDEs pollution control and health protection strategies.

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来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.