燃料类型、燃烧阶段和光老化对挥发性有机物排放和健康风险的影响

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关键词：固体燃料燃烧；挥发性有机物；燃烧效率；健康风险评估；光老化中图分类号：X511文献标志码：ADOI：10.7652/xjtuxb202602012 文章编号：0253-987X（2026）02-0125-11

Abstract： From a healthy combustion perspective， time-of-flight mass spectrometry was employed to characterize volatile organic compounds （VOCs） emissions from corn straw， bituminous coal，and coal-biomass briquettes，and to assess their associated health risks. First，the influence of different combustion phases on total volatile organic compound （TVOC） emissions from various fuels was analyzed based on combustion efficiency. Second，the U.S. environmental protection agency health risk model was used to calculate real-time health risks during the combustion of different fuels. Finally，an oxidation flow reactor was applied to simulate ultraviolet irradiation of combustion flue gas，and the effect of photochemical aging on VOC emission characteristics was evaluated. The results show that the TVOC mass concentration emitted from corn straw combustion was the highest，followed by bituminous coal，with coal-based biomass briquettes being the lowest. A negative correlation was observed between modified combustion eficiency and VOC generation， and incomplete combustion significantly increased pollutant emisson intensity. Health risk assessment indicated that the hazard index for all three fuels exceeded 3O，and the cumulative carcinogenic risk exceeded 1×10-4 ，surpassing safety thresholds and indicating high noncarcinogenic and carcinogenic risks. Photoaging reduced carcinogenic risk by 70% ，but had a limited mitigating effect on non-carcinogenic risk. The findings provide a scientific basis for the formulation of public health protection policies and clean energy utilization strategies.

Keywords： solid fuel combustion;volatile organic compounds;combustion efciency; health risk assessment; photoaging

挥发性有机物（VOCs）是一类在常温下易挥发的有机化合物，广泛存在于环境介质中，显著影响着空气质量[。（剩余15815字）