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| Photochemical oxidation of polycyclic aromatic hydrocarbons in PM2.5 emitted from residential combustion sources |
| ZHANG Bin, LI Dan, SHEN Zhen-xing, XU Hong-mei, HE Kun, SUN Jian |
| School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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Abstract The emissions of fresh and aged parent polycyclic aromatic hydrocarbons (pPAHs) and oxygenated polycyclic aromatic hydrocarbons (oPAHs) from different residential combustion sources were determined using a potential aerosol mass oxidation flow reactor (PAM-OFR). The results showed that the emission factors of pPAHs decreased by 29.5%~82.9% after atmospheric photochemical oxidation, while oPAHs had an increasing trend. The results demonstrated that pPAHs were emitted directly into the atmosphere through residential combustion sources and were regarded as primary organic aerosol (POA), while oPAHs were generated by photochemical oxidation of organic matter in the atmosphere and were regarded as secondary organic aerosol (SOA). During stimulated photochemical aging, the average decrease of emission factor for pPAHs in biomass burning (73.2%) was significantly higher than that from coal combustion (56.2%), representing that pPAHs emitted from biomass burning have a higher photochemical reaction potential to produce more oxidized substances compared to coal. The present study also showed that the stimulated atmospheric photochemical oxidation process led to a significant increase in the oPAHs/pPAHs ratio and demonstrated a secondary reaction mechanism of pPAHs reacting with hydroxyl radical (·OH) to produce oPAHs.
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Received: 22 March 2024
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[1] Kim K H, Jahan S A, Kabir E, et al. A review of airborne polycyclic aromatic hydrocarbons (PAHs) and their human health effects [J]. Environment International, 2013,60:71-80.
[2] 程鹏飞,王泽铭,赵旭强,等.土壤中多环芳烃衍生物污染特征及迁移转化[J]. 中国环境科学, 2024,44(3):1562-1574. Cheng P F, Wang Z M, Zhao X Q, et al. Characteristics of polycyclic aromatic hydrocarbon (PAH) derivatives in soil and their transport [J]. China Environmental Science, 2024,44(3):1562-1574.
[3] 高玉宗,姬亚芹,杨益,等.天津市大气中多环芳烃衍生物污染特征和来源[J]. 中国环境科学, 2023,43(3):1026-1034. Gao Y Z, Ji Y Q, Yang Y, et al. Characteristics and sources of atmospheric polycyclic aromatic hydrocarbon derivatives in Tianjin [J]. China Environmental Science, 2023,43(3):1026-1034.
[4] Gbeddy G, Goonetilleke A, Ayoko G A, et al. Transformation and degradation of polycyclic aromatic hydrocarbons (PAHs) in urban road surfaces: Influential factors, implications and recommendations [J]. Environmental Pollution, 2020,257:113510-113525.
[5] Cheng Y, Kong S, Yan Q, et al. Size-segregated emission factors and health risks of PAHs from residential coal flaming/smoldering combustion [J]. Environmental Science and Pollution Research, 2019, 26(31):31793-31803.
[6] Wang J, Du W, Chen Y, et al. Nitrated and oxygenated polycyclic aromatic hydrocarbons emissions from solid fuel combustion in rural China: Database of 12real-world scenarios for residential cooking and heating activities [J]. Science of the Total Environment, 2022,852: 158501-158507.
[7] Zhang L, Yang L, Zhou Q, et al. Size distribution of particulate polycyclic aromatic hydrocarbons in fresh combustion smoke and ambient air: A review [J]. Journal of Environmental Sciences, 2020, 88:370-384.
[8] Shen G, Preston W, Ebersviller S M, et al. Polycyclic aromatic hydrocarbons in fine particulate matter emitted from burning kerosene, liquid petroleum gas, and wood fuels in household cookstoves [J]. Energy & Fuels, 2017,31(3):3081-3090.
[9] Wu L, Ling Z, Shao M, et al. Roles of semivolatile/intermediate- volatility organic compounds on SOA formation over China during a pollution episode: Sensitivity analysis and implications for future studies [J]. Journal of Geophysical Research: Atmospheres, 2021, 126(8):e2020JD033999.
[10] Lee J, Lane D A. Formation of oxidized products from the reaction of gaseous phenanthrene with the OH radical in a reaction chamber [J]. Atmospheric Environment, 2010,44(20):2469-2477.
[11] Miet K, Le Menach K, Flaud P M, et al. Heterogeneous reactions of ozone with pyrene, 1-hydroxypyrene and 1-nitropyrene adsorbed on particles [J]. Atmospheric Environment, 2009,43(24):3699-3707.
[12] DB61/350-2004洁净型煤[S]. DB61/350-2004 Clean Coal Shaanxi [S].
[13] GB 34170-2017商品煤质量民用型煤[S]. GB 34170-2017 Commodity coal quality Civilian coal [S].
[14] Zhang B, Sun J, Jiang N, et al. Emission factors, characteristics, and gas-particle partitioning of polycyclic aromatic hydrocarbons in PM2.5emitted for the typical solid fuel combustions in rural Guanzhong Plain, China [J]. Environmental Pollution, 2021,286:117573-117582.
[15] Lambe A T, Ahern A T, Williams L R, et al. Characterization of aerosol photooxidation flow reactors: heterogeneous oxidation, secondary organic aerosol formation and cloud condensation nuclei activity measurements [J]. Atmospheric Measurement Techniques, 2011,4(3):445-461.
[16] Li R, Sun E, Jin M, et al. Potential energy curves and lifetimes of low-lying excited electronic states of CSe studied by configuration interaction method [J]. The Journal of Physical Chemistry A, 2014, 118(14):2629-2637.
[17] Zhang B, Wang C, Sun J, et al. Field measurements of PM2.5emissions from typical solid fuel combustion in rural households in Fenhe Basin, China [J]. Environmental Research, 2022,212:113361-113368.
[18] Zhang Y, Shen Z, Sun J, et al. Parent, alkylated, oxygenated and nitro polycyclic aromatic hydrocarbons from raw coal chunks and clean coal combustion: Emission factors, source pro files, and health risks [J]. Science of the Total Environment, 2020,721:137696-1377003.
[19] Qi J, Li Q, Wu J, et al. Biocoal briquettes combusted in a household cooking stove: Improved thermal efficiencies and reduced pollutant emissions [J]. Environmental Science & Technology, 2017,51(3): 1886-1892.
[20] Sun J, Zhi G, Jin W, et al. Emission factors of organic carbon and elemental carbon for residential coal and biomass fuels in China- A new database for 39 fuel-stove combinations [J]. Atmospheric Environment, 2018,190:241-248.
[21] Li J, Li J, Wang G, et al. Molecular characteristics of organic compositions in fresh and aged biomass burning aerosols [J]. Science of the Total Environment, 2020,741:140247-140258.
[22] Fu P Q, Kawamura K, Chen J, et al. Diurnal variations of organic molecular tracers and stable carbon isotopic composition in atmospheric aerosols over Mt. Tai in the North China Plain: An influence of biomass burning [J]. Atmospheric Chemistry and Physics, 2012,12(18):8359-8375.
[23] Li J, Wang G, Aggarwal S G, et al. Comparison of abundances, compositions and sources of elements, inorganic ions and organic compounds in atmospheric aerosols from Xi'an and New Delhi, two megacities in China and India [J]. Science of the Total Environment, 2014,476-477:485-495.
[24] Li X, Jiang L, Hoa L P, et al. Size distribution of particle-phase sugar and nitrophenol tracers during severe urban haze episodes in Shanghai [J]. Atmospheric Environment, 2016,145:115-127.
[25] Wang W, Jariyasopit N, Schrlau J, et al. Concentration and photochemistry of PAHs, NPAHs, and OPAHs and toxicity of PM2.5 during the Beijing Olympic Games [J]. Environmental Science & Technology, 2011,45(16):6887-6895.
[26] Ringuet J, Leoz-Garziandia E, Budzinski H, et al. Particle size distribution of nitrated and oxygenated polycyclic aromatic hydrocarbons (NPAHs and OPAHs) on traffic and suburban sites of a European megacity: Paris (France) [J]. Atmospheric Chemistry and Physics, 2012,12(18):8877-8887.
[27] Zhang Y, Yang B, Gan J, et al. Nitration of particle-associated PAHs and their derivatives (nitro-, oxy-, and hydroxy-PAHs) with NO3 radicals [J]. Atmospheric Environment, 2011,45(15):2515-2521.
[28] Li J, Zhang Q, Wang G, et al. Optical properties and molecular compositions of water-soluble and water-insoluble brown carbon (BrC) aerosols in northwest China [J]. Atmospheric Chemistry and Physics, 2020,20(8):4889-4904.
[29] Zhang Y, Sun J, Zou H, et al. Photochemical aging process on PM2.5 bound PAHs emission from solid fuel combustion in traditional and improved stoves [J]. Atmospheric Research, 2021,263:105807-105817.
[30] Kim D, Kumfer B M, Anastasio C, et al. Environmental aging of polycyclic aromatic hydrocarbons on soot and its effect on source identification [J]. Chemosphere, 2009,76(8):1075-1081.
[31] Keyte I J, Harrison R M, Lammel G. Chemical reactivity and long-range transport potential of polycyclic aromatic hydrocarbons - a review [J]. Chemical Society Reviews, 2013,42(24):9333-9391.
[32] Ray D, Ghosh S K, Raha S. Impacts of photochemical ageing on the half-lives and diagnostic ratio of polycyclic aromatic hydrocarbons intrinsic to PM2.5 collected from ‘real-world’ like combustion events of wood and rice straw burning [J]. Journal of Hazardous Materials, 2019,366:10-15. |
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