Mohd Samin Ahmad Shalihin, Azmi Nur Batrisyia Hadfina, Latif Mohd Talib, Leong Yin-Hui, Tengku Muhammad Tengku Sifzizul, Sheng Wen, Amil Norhaniza
Malaysia National Poison Centre, Universiti Sains Malaysia, 11800, Penang, Malaysia.
Institute of Climate Adaptation and Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Nerus, 21300, Terengganu, Malaysia.
Environ Monit Assess. 2025 Jun 30;197(7):825. doi: 10.1007/s10661-025-14248-3.
The emissions of polyhalogenated aromatic hydrocarbons released in the air from peatland fires pose significant environmental health hazards. The contribution of peatland fires to environmental pollution is increasing continually in Malaysia. The composition of the smoke emerging from such fires plays a pivotal role in elucidating health risks. Therefore, the polyhalogenated aromatic hydrocarbon congeners must be assessed in the released smoke. The present study focused on two peatland forests in Peninsular Malaysia, comprising the active burning sites: Kuala Langat in Selangor and Pekan in Pahang. The smoke samples from the burning and burning-suppressed sites were analyzed for polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (dl-PCBs) particle number concentration (PNC) and particulate mass (PM) concentration. In the current study, we found hazardous levels of PCDD/Fs/dl-PCBs TEQ as high as 80.74 fg/m during the burning and 1,2,3,4,6,7,8-HpCDF (as high as 23.38 pg) and PCB-126 (as high as 34.41 pg) as the predominant congeners in the smoke, respectively. The smoke analysis of peatland fires revealed a significantly higher concentration of PNC and PM mass compared to a non-fire day. The analysis of the hourly PM ratios revealed fine particles as the dominant component in the ambient air during the peatland fires and non-fire days, indicating a strong association between PM mass and PNC. Thus, the present study establishes that peatland fires pose a significant health hazard, emphasizing the need for site-specific profiling of smoke constituents for effective management of health hazards.
泥炭地火灾向空气中释放的多卤代芳烃会造成重大的环境健康危害。在马来西亚，泥炭地火灾对环境污染的影响在持续增加。此类火灾产生的烟雾成分对于阐明健康风险起着关键作用。因此，必须对释放出的烟雾中的多卤代芳烃同系物进行评估。本研究聚焦于马来西亚半岛的两片泥炭地森林，包括活跃的燃烧地点：雪兰莪州的瓜拉冷岳和彭亨州的北干。对来自燃烧地点和灭火地点的烟雾样本进行了多氯二苯并对二恶英和多氯二苯并呋喃（PCDD/Fs）以及类二恶英多氯联苯（dl-PCBs）的颗粒数浓度（PNC）和颗粒物质量（PM）浓度分析。在本研究中，我们发现燃烧期间PCDD/Fs/dl-PCBs毒性当量（TEQ）的危险水平高达80.74 飞克/立方米，烟雾中主要的同系物分别是1,2,3,4,6,7,8-七氯代二苯并呋喃（高达23.38 皮克）和多氯联苯-126（高达34.41 皮克）。泥炭地火灾的烟雾分析显示，与非火灾日相比，PNC和PM质量浓度显著更高。对每小时PM比率的分析表明，在泥炭地火灾期间和非火灾日，细颗粒物是环境空气中的主要成分，这表明PM质量与PNC之间存在紧密关联。因此，本研究证实泥炭地火灾会造成重大健康危害，强调需要针对特定地点对烟雾成分进行剖析，以有效管理健康危害。
