Atmospheric Pollution Research最新文献

{"title":"Indoor air quality assessment of particulate matter levels in urban homes in India","authors":"Prince Vijay ,&nbsp;Vinayak Sahota ,&nbsp;Rajdeep Singh ,&nbsp;Shreya Dubey ,&nbsp;Sonali Borse ,&nbsp;Harish C. Phuleria","doi":"10.1016/j.apr.2025.102553","DOIUrl":"10.1016/j.apr.2025.102553","url":null,"abstract":"<div><div>Indoor air pollution with respect to particulate matter (PM) levels have not been investigated as intensively as those of outdoor pollution. In this pilot study, we address this gap by assessing indoor PM levels, the factors that influence it, and their spatio-temporal variations across four Indian cities: Delhi, Mumbai, Bangalore, and Mysore. We used low-cost monitors (LCMs) to measure residents’ PM exposure for ∼24–48 h. Average concentrations of PM₁ were 60.0 ± 22.7 in Delhi, 34.0 ± 12.8 in Mumbai, 26.3 ± 3.9 in Bangalore, and 24.2 ± 8.0 μg m⁻³ in Mysore. PM_2.5 (PM₁₀) levels were 80.6 ± 26.5 (88.5 ± 24.4), 48.7 ± 17.3 (57.0 ± 17.6), 37.5 ± 5.9 (44.9 ± 8.4), and 33.2 ± 11.7 (38.7 ± 15.2) μg m⁻³, respectively (p &lt; 0.05). The average daily indoor PM₁ (PM_2.5, PM₁₀) during cooking was 30 % (32 %, 35 %) higher than that during non-cooking hours, and homes with longer cooking periods (≥2 h) showed ∼40 % higher PM levels. Indoor PM was strongly correlated to outdoor PM levels (R² &gt; 0.70). Indoor sources contributed only ∼10 % to the overall daily indoor PM levels, and the combined contribution of indoor and local outdoor sources to indoor PM was ∼33 %. Indoor PM employing the real-time LCS showed higher variability within homes than between homes, indicating that longer-term measurements should be conducted to accurately capture the variability. The study highlights that acute exposures are closely associated with short-term, temporarily generated indoor pollutants, while outdoor sources contribute significantly to chronic exposure to indoor PM.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102553"},"PeriodicalIF":3.9,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inter-model comparison of the DRI-2001 and DRI-2015 for carbonaceous aerosol analysis in PM2.5: Method development and application in Chongqing","authors":"Chao Peng ,&nbsp;Chongzhi Zhai ,&nbsp;Yang Chen ,&nbsp;Mi Tian ,&nbsp;Ying Xiang ,&nbsp;Tianyu Zhai ,&nbsp;Weikai Fang ,&nbsp;Xin Long ,&nbsp;Xiaocheng Wang ,&nbsp;Mulan Chen ,&nbsp;Yunqing Cao ,&nbsp;Min Du ,&nbsp;Zhenliang Li","doi":"10.1016/j.apr.2025.102555","DOIUrl":"10.1016/j.apr.2025.102555","url":null,"abstract":"<div><div>Thermal-optical method is widely used to determine organic carbon (OC) and elemental carbon (EC) in PM_2.5 collected on filters. DRI-2001 and DRI-2015 analyzers have both been extensively employed with the IMPROVE_A protocol in the recent decades. However, differences in detectors and lasers between the two models can affect the measurement results. In this study, a novel using multiple linear regression was developed to equalize carbon fraction results between DRI-2001 and DRI-2015. After adjustment, high inter-model consistency was observed, with a mean bias within 5 % for total carbon (TC) and OC, and ∼10 % for EC. Larger inter-model differences (5.2 %–121.5 %) were found in OC1-OC4 and EC1-EC3. Fractions with high mass loading, particularly those linked to biomass burning (BB) and coal combustion (CC) (e.g., OC1, OC2 and OC4), exhibited better agreement after adjustment, with smaller mean bias within ∼15 % and higher R² values above 0.93 (<em>p</em> &lt; 0.001). During winter in Wanzhou, the adjusted carbon fractions exhibited significantly improved inter-model agreement (<em>p</em> &lt; 0.001). BB and CC were identified as the primary sources of carbonaceous aerosol, while secondary organic carbon (SOC) also contributed to elevated TC concentrations during pollution periods. Similar to DRI-2001 results, DRI-2015 measurements during winter indicated that CC and BB contributed 47.5 %, diesel exhaust 18.0 %, gasoline exhaust 21.6 %, and secondary formation 12.9 % to TC. These findings enhance our understanding of uncertainties and differences between models, leading to more accurate characterization of carbonaceous aerosol.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102555"},"PeriodicalIF":3.9,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Concurrent study of long-range transport of fine and ultrafine particles from peatland fires in lower Southeast Asia","authors":"Panita Khwanmueng ,&nbsp;Racha Dejchanchaiwong ,&nbsp;Perapong Tekasakul ,&nbsp;Nobchonnee Nim ,&nbsp;Aulia Ullah ,&nbsp;Kunaifi Kunaifi ,&nbsp;John Morris","doi":"10.1016/j.apr.2025.102554","DOIUrl":"10.1016/j.apr.2025.102554","url":null,"abstract":"<div><div>The physical and chemical characteristics of atmospheric fine (PM₁ and PM_2.5) and ultrafine particles (PM_0.1), during peatland fires in Indonesia and transported over a long distance to southern Thailand, were investigated to add more insight into the impact in lower Southeast Asia region. The background PM concentrations in Pekanbaru, Indonesia were approximately 1.5–3 times as high as those in Hat Yai, southern Thailand. The PM and PM-bound PAH mass concentrations in Hat Yai during the haze event were significantly increased over the background. The prominent PAH profiles during the haze event in Hat Yai showed a similar pattern to those in Pekanbaru. This suggested that the aerosol from the peatland fire in Indonesia was transported over long distances to southern Thailand. Moreover, the chemical mass balance model indicated that the most dominant source of PM_0.1 at both sites during normal event was vehicle fuel combustion. This is contrast with PM₁ and PM_2.5 where the biomass burning was the major source. On the other hand, during the haze event, the main source of PM_0.1 at Pekanbaru was clearly peatland fires, accounting for 51–65 %, whereas at Hat Yai, the most dominant source of PM_0.1 was vehicle fuel combustion accounting for 66 % even though the contribution from peatland fires was noticeable (17 %). This is in contrast with PM₁ and PM_2.5, where peatland fires were the main source, contributing 38–50 %.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102554"},"PeriodicalIF":3.9,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying the contribution of periodicity and national holidays to air pollution levels in the United Kingdom using a decomposable time series model","authors":"Christopher E. Rushton,&nbsp;James E. Tate","doi":"10.1016/j.apr.2025.102533","DOIUrl":"10.1016/j.apr.2025.102533","url":null,"abstract":"<div><div>This paper quantifies the impact of periodicity and national holidays on air pollution levels in the United Kingdom using a decomposable time series forecasting model. The analysis focuses on nitrogen dioxide (<span><math><mrow><mi>N</mi><msub><mrow><mi>O</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>) concentrations, with data sourced from the Automatic Urban and Rural Network and Air Quality England networks between January 2017 and December 2023. The Prophet model developed by Meta is used to identify, quantify, and appropriately remove the temporal periodicities in air pollution concentration, demonstrating how annual holidays such as Christmas, and one-off events, such as the state funeral of Elizabeth II and the London Marathon, influence local air pollution in isolation. The findings provide empirical evidence supporting widely held assumptions around national holidays and show some localised reductions in <span><math><mrow><mi>N</mi><msub><mrow><mi>O</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span> concentrations during major events, with contextual variation also observed. For example, the state funeral of Elizabeth II shows a reduction in <span><math><mrow><mn>21</mn><mo>.</mo><mn>15</mn><mspace></mspace><mi>μ</mi><mi>g</mi><msup><mrow><mi>m</mi></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math></span> compared to a median reduction of <span><math><mrow><mo>−</mo><mn>2</mn><mo>.</mo><mn>43</mn><mspace></mspace><mi>μ</mi><mi>g</mi><msup><mrow><mi>m</mi></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math></span> outside of London for urban traffic sites. This paper emphasises the need for localised air pollution mitigation policies and demonstrates the utility of large, complete, and publicly available datasets coupled with modern forecasting tools in environmental research.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102533"},"PeriodicalIF":3.9,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics and deposition capacities of the chemical components in frost in Jinan, China","authors":"Jiarong Li ,&nbsp;Shuang Zhang ,&nbsp;Wanqi Wu ,&nbsp;Xuli Jing ,&nbsp;Chao Zhu ,&nbsp;Jinhe Wang","doi":"10.1016/j.apr.2025.102551","DOIUrl":"10.1016/j.apr.2025.102551","url":null,"abstract":"<div><div>Frost usually occurs at night when the temperature falls below the freezing point and the air is saturated with water vapor. In this study, 57 frost samples were collected over two winters (2020 and 2021) in Jinan, a central city located in the North China Plain. The concentrations of water-soluble ions (WSIs), polycyclic aromatic hydrocarbons (PAHs) and nitrated phenols (NPs) in the frost samples were measured using ion chromatography, gas chromatography–mass spectrometry, and ultra-high-performance liquid chromatography–mass spectrometry, respectively. The characteristics and inter relationships were summarized comprehensively. In addition, the deposition effect of frost was investigated. Results showed that each frost process resulted the deposition of 5.6 mg m⁻² WSIs, 0.22 μg m⁻² PAHs and 4.1 μg m⁻² NPs. The monthly deposition fluxes of the WSIs and PAHs through frost were two orders of magnitude lower than those through rain and dry deposition. For the first time, this study calculated the deposition capacity (DC), which indicates how readily a chemical component is eliminated during the frost process. The DC values obtained by chemical group ranked as follows: NPs (362.1 ± 120.3) &gt; WSIs (107.5 ± 61.9) &gt; PAHs (4.8 ± 4.0), indicating that NPs were more easily removed through frost deposition, whereas PAHs were the least likely to be deposited. Among individual components, Ca²⁺ and 5-nitrosalicylic acid exhibited the highest DC values (&gt;600.0), indicating that they participated actively in the frost pross. Furthermore, NP components containing more carboxyl groups and fewer hydroxyl groups were found to have higher DC values.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102551"},"PeriodicalIF":3.9,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on volatile organic compound source profiles and dynamic emission inventories in an integrated refinery-petrochemical complex","authors":"Aizhong Cheng,&nbsp;Sujing Li,&nbsp;Wei Li","doi":"10.1016/j.apr.2025.102550","DOIUrl":"10.1016/j.apr.2025.102550","url":null,"abstract":"<div><div>Volatile organic compound (VOCs) emissions from integrated refinery-petrochemical complex (IRPC) were difficult to quantify due to complex production processes and significant fugitive emissions. Previous studies had largely focused on upstream refinery units, with limited research on comprehensive emission factors (EFs) and inventories for the entire IRPC. We analyzed multiple emission sources within IRPC, including equipment leaks (EL), stationary combustion (SC), cooling towers (CT), storage tanks (ST), wastewater collection and treatment systems (WT), process vents (PV), flares (F), and loading operations (LO). The EFs of IRPC was 0.21 kg VOCs/t of crude processed. Additionally, to mitigate the temporal lag associated with traditional emission inventories, we developed dynamic accounting methods for VOCs emissions in IRPC. These methods integrate monitoring data and time-varying meteorological parameters (e.g., temperature, air pressure, wind speed) to estimate emissions from SC and ST. An integrated analytical system combining gas chromatography-mass spectrometry (GC-MS) and flame ionization detection (FID) was used to characterize and quantify 115 VOCs species. Composite source profiles were sampling from 35 sites collected across 18 units using a weighted average method. This detailed breakdown provided a more comprehensive view of IRPC emissions compared to studies focusing solely on upstream units. In the IRPC, key pollutants identified include propane, ethane, acetone, ethanol, propylene, and dichloromethane. Alkenes and alkynes had the highest ozone formation potential (OFP) contribution, while aromatics had the greatest secondary organic aerosol formation potential (SOAP) contribution. The study's detailed source profiles and dynamic emission inventory aid petrochemical pollution control and regional air quality improvements.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102550"},"PeriodicalIF":3.9,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of the southwest vortex on the vertical structure of ozone in the Sichuan Basin in China","authors":"Huiqiong Ning ,&nbsp;Hong Wang ,&nbsp;Ping Kang ,&nbsp;Zhaodong Liu ,&nbsp;Yue Peng ,&nbsp;Wenjie Zhang ,&nbsp;Chen Han ,&nbsp;Yang Zhao ,&nbsp;Wei Liu ,&nbsp;Ping Wang ,&nbsp;Huizheng Che","doi":"10.1016/j.apr.2025.102546","DOIUrl":"10.1016/j.apr.2025.102546","url":null,"abstract":"<div><div>To investigate the mechanism by which the southwest vortex (SWV) affected the vertical distribution of O₃ in the lower troposphere over the Sichuan Basin (SCB), the SWV cases from April to September of each year from 2015 to 2018, the concentrations of O₃ in the same periods, meteorological factors (such as temperature, humidity, and wind), and the convective stability index were analysed. The results revealed 78 dry SWVs, 74 weak precipitation SWVs, and 37 heavy precipitation SWVs over the SCB. The dry SWV increased the mean O₃ column concentration (MOCC) over the SCB (+1.75 %), and the precipitation SWVs reduced the MOCC, with the weak precipitation SWVs (−7.44 %) having a greater reduction than the heavy precipitation SWVs (−5.42 %). Furthermore, the O₃ concentrations at various altitude layers were impacted to varied degrees, with the strongest scavenging effect occurring at the 850 hPa layer. The scavenging effect was especially significant in areas with high O₃ concentrations, such as the Chengdu Plain. The transit of precipitation SWVs resulted in the cooling and humidification of all layers, which could have suppressed O₃ photochemical reactions and reduced the O₃ concentration, whereas the dry layer during the transit of dry SWVs increased the O₃ concentration at the bottom of the basin. In terms of the different dispersion situations, Chongqing was dominated by horizontal winds during the transit of SWVs. However, the wind speed in the central and western SCBs was greater and the vertical component of the wind was stronger, which was favourable for O₃ dispersion in Chengdu.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102546"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multivariate toxicological assessments of inhaled fine-submicron particle-bound metals in school-aged children of Dhaka city","authors":"Afroza Parvin ,&nbsp;Mohammad Moniruzzaman ,&nbsp;Md Kamal Hossain ,&nbsp;Badhan Saha ,&nbsp;Afsana Parvin ,&nbsp;Priyanka Dey Suchi ,&nbsp;Jahan-E- Gulshan ,&nbsp;Anika Nawar ,&nbsp;Saif Shahrukh ,&nbsp;Md Shaha Alam ,&nbsp;Razia Sultana Ankhy ,&nbsp;Abu Selim ,&nbsp;Md Firoz Khan","doi":"10.1016/j.apr.2025.102545","DOIUrl":"10.1016/j.apr.2025.102545","url":null,"abstract":"<div><div>Dhaka, being one of the most air-polluted cities, experiences a peak pollution level during the dry winter due to its geographical location, climatic conditions, regional urban activities, and air mass trajectories, which are exacerbated by transboundary effects; a reduced pattern was observed during monsoon. Fine and submicron particle (PM_2.5 and PM₁)-bound metals were investigated in fifteen schools across three least-to-polluted cluster regions in Dhaka during the monsoon and winter to identify the dreadful impact of air pollution on school-age children whose airways are smaller and still developing. Children's respiratory deposition flux (RDF) showed PM₁ had a higher retention of metals in alveolar regions, which accounts for 86.91–93.23 % of PM_2.5. In addition, inhalation significantly contributes to both carcinogenic and non-carcinogenic risks, 89.51 % and 72.62 % of the total, respectively. Regarding non-carcinogenic risk, Mn and Pb showed the maximum hazard quotient (HQ) values (3.3 and 2.6) in school environments of industrial and commercial areas, respectively. The Cr, As, and V were the predominant contributors to substantial carcinogenic risk for children. The positive matrix factorization (PMF) deciphers the release of Cr, Mn, and Ni into the atmosphere from industries, whereas automobile exhaust, coal combustion, and heavy-oil combustion solely emit Pb, As, and V in the air, respectively. In industrial and commercial areas, the cancer risk of children was 65 and 36.6 times higher than in residential zones, respectively. This study intends to identify and categorize distinct pollution sources and their potential risks, consequently providing the required information to develop an integrated approach to reduce emissions.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102545"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variations in polycyclic aromatic hydrocarbons concentrations and their contribution to aerosol optical depth during the COVID-19 outbreak: A study in Yokohama using generalized additive model","authors":"Weidong Jing ,&nbsp;Kohei Nakano ,&nbsp;Ryosuke Mitani ,&nbsp;Zhenxing Shen ,&nbsp;Tomoaki Okuda","doi":"10.1016/j.apr.2025.102547","DOIUrl":"10.1016/j.apr.2025.102547","url":null,"abstract":"<div><div>The severe social restrictions aiming at reducing the novel coronavirus disease (COVID-19) transmission during its outbreak significantly affected regional air quality. This study analyzed changes in polycyclic aromatic hydrocarbons (PAHs) concentrations in cyclone-collected powder form particulate matter (PM) samples collected in Yokohama, Japan, from 2018 to 2023. The annual mean ∑PAHs concentration decreased significantly from 20.7 ng/mg in 2019 to 13.2 ng/mg in 2020 after the outbreak. However, the main sources of PAHs remained stable and were dominated by incomplete fossil fuel combustion. A generalized additive model was utilized to analyze the statistical relationships of air pollutants, namely, aerosol particulate matter (PM_2.5), ∑PAHs, ozone (O₃), metal, and meteorological factors such as solar radiation and their impact on aerosol optical depth (AOD). AOD remote sensing data collected by the Terra/MODIS satellite reflects the degree of air turbidity and atmospheric aerosol loading. Despite the small sample size, the model fitting demonstrated a good fit and showed smoothing non-linear interaction effects among the target factors influencing secondary aerosol generation. In conclusion, intense solar radiation, high concentrations of oxidative gases, elevated levels of organic contaminants in aerosols, and the catalytic degradation of PAHs by transition metals contribute to increased atmospheric aerosol loads. This finding enhances the present understanding of the photochemical reaction processes of aerosol particles. However, longer-term observational studies are needed to confirm our findings due to the limited sample size in this study.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 8","pages":"Article 102547"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of carbonized products on reducing pollutant emission from household solid fuel combustion","authors":"Zhenkun Guo ,&nbsp;Haocheng He ,&nbsp;Feiran Song ,&nbsp;Xiaofeng Chen ,&nbsp;Mengyuan Liu ,&nbsp;Fanhui Guo ,&nbsp;Juan Chen ,&nbsp;Shijian Lu ,&nbsp;Yonghui Feng ,&nbsp;Shuxun Sang ,&nbsp;Jianjun Wu","doi":"10.1016/j.apr.2025.102548","DOIUrl":"10.1016/j.apr.2025.102548","url":null,"abstract":"<div><div>Household solid fuel combustion remains a major source of ambient air pollution in developing regions. To address this challenge, we propose a carbonization-driven modification strategy by converting low-rank coal and agricultural straw into bio-coal briquettes through volatile removal. Systematic field measurements using a dilution sampling system revealed that stable combustion of carbonized briquettes in semi-gasifier stoves significantly reduced particulate emissions. Specifically, the optimal blend containing 20 % carbonized straw achieved a 41.5 % decrease in PM_2.5 emission factor (3.7 vs. 4.9 mg/g) compared to raw coal, along with the lowest total suspended particulates (TSP, 3.92 mg/g) and PM₁ (2.14 mg/g). Mass-based emission reductions were observed for organic carbon (88.4 ± 1.8 %), elemental carbon (88.8 ± 2.5 %), 16 priority PAHs (85 ± 1.6 %), and benzopyrene (95 ± 2.7 %), while energy-based emission factors of heavy metals and toxic nonmetals (Pb, Cr, As, etc.) decreased by 13.95 %. SEM-verified particle morphology indicated compact carbon matrices with fewer fragmented particulates. Crucially, this technology demonstrates dual benefits: a reduction in toxicity equivalency of inhalable pollutants per household annually, and decentralized production feasibility using rural biomass waste. Despite higher particulate emissions during straw carbonization than coal (21.7 vs. 12.1 mg/g), the net emission reduction across the fuel lifecycle positions carbonized briquettes as a scalable transition solution toward low-emission household energy in resource-limited settings.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 7","pages":"Article 102548"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}