Atmospheric Pollution Research最新文献

{"title":"Characterization of equivalent Black Carbon (eBC) in different environments in the western Mediterranean","authors":"Violeta Matos ,&nbsp;Víctor Estellés ,&nbsp;Josep Camarasa ,&nbsp;Mar Sorribas ,&nbsp;María Pilar Utrillas","doi":"10.1016/j.apr.2024.102367","DOIUrl":"10.1016/j.apr.2024.102367","url":null,"abstract":"<div><div>This work is focused on the characterization of equivalent Black Carbon (eBC) mass concentrations at two sites (suburban and rural background) in Valencia, Spain. The suburban station is in the metropolitan area of Valencia (the third largest in Spain), so the analysis of eBC is crucial to determine its impact on urban pollution. The mean (<span><math><mo>±</mo></math></span>standard deviation) concentration from April 2011 to March 2023 was 1.0 <span><math><mo>±</mo></math></span> 0.5 <span><math><mi>μ</mi></math></span>gm⁻³, ranging from 0.7 <span><math><mi>μ</mi></math></span>gm⁻³ in summer to 1.4 <span><math><mi>μ</mi></math></span>gm⁻³ in winter. The seasonality is related to the intraannual variability of the Boundary Layer Height (BLH) and the daily variation is closely related to the daily traffic pattern, especially to rush hours. Applying the Mann–Kendall test, eBC levels exhibited decreasing trends for all seasons, showing slopes between −15%/yr and −5%/yr. In addition, the Absorption Å ngström Exponent shows a significant upward trend for all periods analyzed.</div><div>The rural station is in a remote site at 1280 m.a.s.l., 80 km from the suburban station. The overall mean from 2017 to 2023 (<span><math><mo>±</mo></math></span> standard deviation) was 0.17 <span><math><mo>±</mo></math></span> 0.14 <span><math><mi>μ</mi></math></span>gm⁻³, ranging from 0.08 <span><math><mi>μ</mi></math></span>gm⁻³ in winter to 0.20 <span><math><mi>μ</mi></math></span>gm⁻³ in summer. This seasonality is due to a combined effect of local dynamics of the BLH and the station altitude. The daily variability is smoother, without marked changes. The maximum daily concentration is reached in the late afternoon. According to the Conditional Bivariate Probability Function (CBPF) diagrams, the transport from the city of Valencia (SE direction) is the most relevant contribution at the measurement location.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 2","pages":"Article 102367"},"PeriodicalIF":3.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal variation and decoupling effects of energy carbon footprint based on nighttime light data: Evidence from counties in northeast China","authors":"Rina Wu ,&nbsp;Ruinan Wang ,&nbsp;Zhiwei Nian ,&nbsp;Jilin Gu","doi":"10.1016/j.apr.2024.102366","DOIUrl":"10.1016/j.apr.2024.102366","url":null,"abstract":"<div><div>In the context of global climate change, it is essential for each county, as a fundamental geographical unit for achieving carbon reduction and energy conservation, to assess its carbon footprint to promote sustainable development. To analyze the energy-related carbon emissions of 221 counties in Northeast China, this study establishes a fitting model using nighttime light data and carbon emissions information. The coefficient R² value of 0.945, with Root Mean Square Error (RMSE) and Relative Error (RE) values of 8501.37 Mt and 2.32%, respectively. Additionally, exploratory spatio-temporal data analyses and standard deviation ellipse methods were used to explore the spatial patterns and spatio-temporal evolution of carbon footprints. The results show that the average annual growth rates of carbon footprint and carbon deficit are determined to be 6.17 % and 7.28%, respectively. Prior to 2013, both the carbon footprint and carbon deficit experienced rapid growth; however, a brief decline occurred thereafter. Starting in 2016, both metrics began to expand again. It is observed that the carbon footprint is expanding westward, while the carbon deficit shows a comparable pattern, radiating from the center to the surrounding areas. The carbon footprint demonstrates significant spatial autocorrelation, with local aggregation predominantly influenced by high-high (HH) and low-low (LL) aggregation. The center of gravity and coverage of the carbon footprint has shifted southwest, displaying a relatively stable development trend. Moreover, the Tapio decoupling model is employed to analyze the relationship between economic development and carbon emissions. The results show that carbon emissions and economic development are consistent with a three-stage decoupling pattern. Overall, the decoupling state is characterized by a growth linkage; however, the decoupling stability is relatively weak, with fluctuations between decoupled and coupled states occurring repeatedly.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 2","pages":"Article 102366"},"PeriodicalIF":3.9,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720055","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":"Research on particle emissions of light-duty hybrid electric vehicles in real driving","authors":"Yangyu Yao ,&nbsp;Jiaqiang Li ,&nbsp;Chao He ,&nbsp;Yanlin Chen ,&nbsp;Haisheng Yu ,&nbsp;Jiguang Wang ,&nbsp;Nan Yang ,&nbsp;Longqing Zhao","doi":"10.1016/j.apr.2024.102332","DOIUrl":"10.1016/j.apr.2024.102332","url":null,"abstract":"<div><div>Real driving emission (RDE) assessments were conducted on light-duty hybrid electric vehicles (HEVs) compliant with China-VI standards across various altitudes, including Kaiyuan, Jianshui, and Kunming. Portable Emission Measurement Systems (PEMS) were utilized to analyze instantaneous particulate number (PN) emissions. At the same time, a particle trap was used to collect primary particulate matter (PM). High-resolution Transmission Electron Microscopy (TEM) was employed to capture the micro-morphology and nano-structure of PM. The findings revealed a positive correlation between PN emission factors and altitude, suggesting more stringent regulations are necessary in high-altitude regions. Cold-start conditions exhibited heightened PN emissions, surpassing regulatory thresholds (primarily when the coolant temperature is below 30 °C). Notably, the PN emission rate increases when the vehicle is under light acceleration (0 ≤ a ≤0.5 m/s²) and the coolant temperature is within the range of 20∼30 °C. The PM emitted by HEVs exhibited an unimodal distribution across different driving conditions, with cold-start yielding finer particles. In contrast, urban and rural driving conditions showed enhanced PM aggregation due to more complete fuel combustion. Urban driving conditions, characterized by coolant temperatures exceeding 70 °C and speeds below 60 km/h, produced PM with the largest average particle size (32.68 nm) and the broadest size distribution range (8.99 nm–77.60 nm). Furthermore, increased engine speed and load resulted in elevated average outer shell fringe lengths of primary nanoparticles. The average inner core fringe lengths initially increased, peaked in urban environments (1.04 nm), and then decreased. Fringe separation distances gradually increased, predominantly between 0.2 nm and 0.8 nm. The increase in engine load is the primary factor influencing the growth of microcrystal tortuosity. The study underscores the significance of HEVs in PM emissions, which pose potential risks to both human health and environmental sustainability, emphasizing the need for effective mitigation strategies.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"16 2","pages":"Article 102332"},"PeriodicalIF":3.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705695","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 measurements of atmospheric Hg in outdoor and indoor at a megacity in Southeast Asia: First insights from the region","authors":"Ly Sy Phu Nguyen ,&nbsp;Le Quoc Hau ,&nbsp;Thi Dieu Huong Pham ,&nbsp;Nguyen Thi Thuy ,&nbsp;To Thi Hien","doi":"10.1016/j.apr.2024.102326","DOIUrl":"10.1016/j.apr.2024.102326","url":null,"abstract":"<div><div>Atmospheric mercury (Hg) is a critical indoor (ID) air pollutant and necessitates stringent monitoring. However, studies have primarily focused on Hg outdoors (OD) compared to ID, with no investigations conducted within the Southeast Asia (SEA) region. In this study, total gaseous Hg (TGM) concentrations and human exposure levels were investigated across various site characteristics in Ho Chi Minh City (HCMC), a megacity in SEA. The measured TGM concentrations for OD and ID were 5.12 ± 6.87 ng m⁻³ (1.20–48.7 ng m⁻³) and 34.5 ± 60.3 ng m⁻³ (1.26–271.9 ng m⁻³). The overall ID/OD ratio was 5.01 (0.77–9.3), signifying markedly elevated ID TGM concentrations. This ratio increases in the following order: shopping malls (1.50) &lt; hospitals (3.21) &lt; chemical laboratories (5.76) &lt; households (11.7). Notably, sites associated with Hg incidents and the utilization of Hg-contained chemicals demonstrate notably high ID/OD levels, ranging from 8.0 to 40.1. The use of Hg-containing chemicals within the chemical laboratory serves as a significant contributor to heightened ID TGM levels. Non-combustion Hg sources, therefore, play an important role in inducing the ID TGM level. The hazard index (HQ) values observed for ID and OD were 0.1 and 0.01, respectively, indicating a negligible risk of exposure to TGM within the study area. However, HQ values recorded within laboratory environments employing Hg-associated chemicals and dental hospitals were 1–17 times greater compared to other sites. The present work provides new insight into the non-combustion ID source of TGM and was helpful for upcoming studies in exploring potential sources of TGM in megacities.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102326"},"PeriodicalIF":3.9,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427891","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":"Investigating the role of photochemistry and impact of regional and local contributions on gaseous pollutant concentrations (NO, NO2, O3, CO, and SO2) at urban and suburban sites","authors":"Sofia Eirini Chatoutsidou,&nbsp;Mihalis Lazaridis","doi":"10.1016/j.apr.2024.102322","DOIUrl":"10.1016/j.apr.2024.102322","url":null,"abstract":"<div><div>Gaseous pollutant concentrations were monitored for one year in urban (NO, NO₂, O₃, CO, and SO₂) and suburban (NO, NO₂, and O₃) sites. Common characteristics were identified at both sites, such as higher concentrations during typical winter months for all pollutants except O₃. Increased NO, NO₂, CO and SO₂ concentrations during wintertime were linked to residential heating emissions, with pairwise correlations showing CO as marker for the study site. O₃ production was lower in wintertime but higher in summertime at both sites based on its seasonal cycle and the impact of sunlight. Furthermore, diurnal variations showed that traffic emissions during rush hours most profoundly affected CO and NO. Nevertheless, NO_x were characteristically higher at the urban site based on the burdened environment, whereas O₃ was higher at the suburban site due to the lower destruction rates. O₃ was the dominant oxidant at both sites, with a linear regression between OX and NO_x revealing a negative relationship. This observation suggested a dominant regional contribution to oxidant concentrations. In addition, abnormally high O₃ concentrations in relation to the season were reported for the first time at the study sites. Elevated concentrations were measured in parallel with Sahara dust events indicating noteworthy atmospheric conditions that require further assessment. Other O₃ burdened periods were driven by regional transport of polluted plumes from the northeast. Lastly, nocturnal increases in O₃ were observed and associated with enhanced vertical mixing.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102322"},"PeriodicalIF":3.9,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427889","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":"Sensitivity of AERMOD (V21112) RLINEXT dispersion model outputs by source type to variability in single noise barrier height and separation distance","authors":"Hongyu Lu ,&nbsp;Daejin Kim ,&nbsp;Haobing Liu ,&nbsp;Tian Xia ,&nbsp;William Reichard ,&nbsp;Michael O. Rodgers ,&nbsp;Randall Guensler","doi":"10.1016/j.apr.2024.102318","DOIUrl":"10.1016/j.apr.2024.102318","url":null,"abstract":"<div><div>The U.S. Environmental Protection Agency (USEPA) introduced the RLINEXT modeling feature in the latest versions of AERMOD (since version v21112) to predict traffic-induced pollutant concentration when noise barriers are present. The research presented in this paper explores the impacts of noise barrier characteristics on AERMOD-predicted concentrations. The research finds that because AERMOD can currently only attach one barrier to each road side, and because that barrier only impacts the source to which it is attached, it is also important to split links so that they properly pair with barriers. Given the sensitivity of AERMOD-predicted concentrations to barrier characteristics (i.e., barrier heights and distances to roadway), the research also concludes that barriers must be appropriately matched with input links. This study investigated the sensitivity of CO concentration predicted by the latest AERMOD under various noise barrier conditions (barrier heights and distances between road and barrier) and meteorological conditions (wind directions and wind speeds). The results indicate that ground-level concentration of downwind receptors decreases with increased barrier heights, and that distant barriers have less of an impact on predicted concentrations. This study also explored the impact of noise barrier on both horizontal and vertical concentration profiles, indicating that concentrations rise behind the barrier as plumes are predicted to loft over the barrier. The sensitivity analysis associated with splitting roadway links to match with barriers indicated an impact on predicted concentration for certain receptors of up to 10%, but the overall the impact on maximum concentrations was marginal.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102318"},"PeriodicalIF":3.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbonaceous aerosol emissions from secondary lighting sources: Emission factors and optical properties","authors":"Chimurkar Navinya ,&nbsp;Taveen Singh Kapoor ,&nbsp;Gupta Anurag ,&nbsp;Chandra Venkataraman ,&nbsp;Harish C. Phuleria","doi":"10.1016/j.apr.2024.102321","DOIUrl":"10.1016/j.apr.2024.102321","url":null,"abstract":"<div><div>India is shifting towards cleaner residential fuels, but this transition does not fully address household lighting challenges. Power disruptions, especially in rural areas, lead to the use of secondary lighting sources such as kerosene lamps, edible oil lamps, and candles. Our previous work identified kerosene wick and hurricane lamps as major secondary lighting sources in Indian households. This study presents the emission factors (EF) and optical properties of carbonaceous aerosols from five major secondary lighting devices in India, measured using a laboratory extractor hood system. Dominant secondary lighting devices, such as simple wick lamps (61.4 ± 9.8 g kg⁻¹) and hurricane lamps (17.2 ± 4.8 g kg⁻¹), exhibit higher elemental carbon (EC) EFs than typical residential biomass burning. Sesame oil lamps, primarily used in India during the Diwali festival, also have significant EC emission potential, with an EC EF of 71.6 ± 16.9 g kg⁻¹. The low absorption Angstrom exponent (AAE) of ∼1 at near-UV wavelengths indicates a dominance of black carbon (BC) and negligible brown carbon absorption, corroborated by very low organic carbon concentrations. India-wide EC emissions (12.5 Gg year⁻¹) from residential kerosene lighting show a higher (∼50%) contribution from eastern India. Additionally, the use of oil lamps during the Diwali festival could emit ∼3 Gg of EC in two days, with a potential reduction of ∼90% if wax-based lamps replace oil lamps. These measured EFs, aerosol optical properties, and estimated emissions will help future studies derive more accurate climate and health impacts from these otherwise overlooked lighting devices.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102321"},"PeriodicalIF":3.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427375","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":"Environmental risk estimation of potentially toxic metal(loid)s (PTMs) in fine particulate dust on the surface of children's playgrounds in parks","authors":"Tong Zhu ,&nbsp;Xinwei Lu ,&nbsp;Zhenze Wang ,&nbsp;Sijia Deng ,&nbsp;Yingsen Zhang ,&nbsp;Kai Lei ,&nbsp;Shigang Chao ,&nbsp;Bo Yu ,&nbsp;Yufan Yang","doi":"10.1016/j.apr.2024.102319","DOIUrl":"10.1016/j.apr.2024.102319","url":null,"abstract":"<div><div>To determine the priority control factors for risk control and management of potentially toxic metal(loid)s (PTMs) in fine particulate dust (FPD) on the surface of children's playgrounds in parks, a comprehensive study was conducted on the pollution, risks, and sources of 12 PTMs in the FPD, taking Xi'an, China as a case. The pollution, ecological and health risks of PTMs were assessed using Nemerow integrated enrichment factor, modified Nemerow integrated eco–risk index, and health risk evaluation model, combined with Monte Carlo simulation. The sources of PTMs in the FPD were quantitatively apportioned using a positive matrix factorization model. Priority control factors for PTMs risk control and management were determined based on the results of source–oriented pollution and risk assessment. The results showed that the average contents (mg kg⁻¹) of Cd (1.9), Cr (99.8), Cu (96.3), Hg (0.2), Pb (61.1), and Zn (239.4) in the FPD were considerably greater than local background values. The sources of PTMs in the FPD are industrial emission, coal combustion and medical activities, mixed source, and natural source, contributing 24.7%, 18.2%, 35.1%, and 22.1% to the total content of PTMs in the FPD, respectively. PTMs in the FPD posed a certain cancer risk to the elderly and children. Industrial emissions and mixed sources are priority control sources, while Cd and Cr are priority PTMs. It is recommended that local eco–environmental departments strengthen environmental monitoring of playgrounds, as well as management of industrial and transportation emissions, to ensure the health of residents.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102319"},"PeriodicalIF":3.9,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316050","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":"Health risks of PM2.5-bound metals at a street canyon: Implication for traffic non-exhaust emissions","authors":"Zhangsen Dong ,&nbsp;Minghao Yuan ,&nbsp;Yifei Xu ,&nbsp;Shanshan Wang ,&nbsp;Shenbo Wang","doi":"10.1016/j.apr.2024.102317","DOIUrl":"10.1016/j.apr.2024.102317","url":null,"abstract":"<div><div>Traffic non-exhaust emissions are a significant source of toxic metals in fine particular matter (PM_2.5), and thus pose adverse effects on human health. PM_2.5-bound metals were sampled at a street canyon and urban background site during ozone and haze periods in Zhengzhou. Higher metal concentrations were observed at the street canyon than at the urban background site, which was more affected by traffic non-exhaust, oil combustion, and dust emissions. Consequently, PM_2.5-bound metals may cause significant non-carcinogenic and carcinogenic hazards to residents at the street canyon. Traffic non-exhaust and oil combustion were the primary contributors to the non-carcinogenic and carcinogenic risk at the street canyon, respectively. Furthermore, the severe health risk of PM_2.5-bound metals from traffic non-exhaust emissions will remain for a long time at street canyons. This work reveals the health risks from vehicles at street canyons, which is beneficial for further reduction of traffic-related emissions.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102317"},"PeriodicalIF":3.9,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319389","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":"Mining of dynamic traffic-meteorology-atmospheric pollutant association rules based on Eclat method","authors":"Yonghong Liu,&nbsp;Xinru Yang,&nbsp;Kui Liu,&nbsp;Rui Xu,&nbsp;Yuzhuang Pian,&nbsp;Shikun Liu","doi":"10.1016/j.apr.2024.102305","DOIUrl":"10.1016/j.apr.2024.102305","url":null,"abstract":"<div><div>With the rapid increase of urban vehicles, the atmospheric compound pollutants, notably PM<span><math><msub><mrow></mrow><mrow><mn>2</mn><mo>.</mo><mn>5</mn></mrow></msub></math></span> and O<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>, have significantly increased and seriously affected public health. Traffic and meteorological conditions are the primary influencing factors of pollutant concentrations, and their spatial and temporal changes affect the dispersion of pollutants. Increasing use of high-resolution big data offers opportunities to explore these correlations. More extensive quantitative studies are essential for effective air pollution control. This study presents an Eclat algorithm to quantitatively reveal the relationship between traffic, meteorology and pollutants with hourly and 5-minute scale data in the urban area of Guangzhou. We establish a research framework covering temporal pollution analysis, multifactor rule mining, and spatial effects. The results show that <span><math><mrow><mi>P</mi><msub><mrow><mi>M</mi></mrow><mrow><mn>2</mn><mo>.</mo><mn>5</mn></mrow></msub></mrow></math></span> and O<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> exhibit coordinated trends on the daily scale influenced by traffic flow and meteorology conditions, but on the hourly scale, they are negatively correlated. At the 5-minute scale, synchronized variations occur only during specific periods. This finer scale better identifies association rules for high-concentration pollutant scenarios, and non-roadside sites outperform roadside sites in mining these associations. For example, when humidity is below 37%, atmospheric pressure is 1016.2–1020.3 Pa, wind speed is 1.7–2.6 m/s, and the traffic volume on Jiefang North Road exceeds 635 vehicles every 5 min, there is a 92.86% probability that the <span><math><mrow><mi>P</mi><msub><mrow><mi>M</mi></mrow><mrow><mn>2</mn><mo>.</mo><mn>5</mn></mrow></msub></mrow></math></span> concentration at GYQ (a non-roadside monitoring site) will exceed 127 <span><math><mi>μ</mi></math></span>g/m<span><math><msup><mrow></mrow><mrow><mn>3</mn></mrow></msup></math></span>. These findings enhance our understanding of how dynamic traffic and meteorological conditions impact atmospheric pollutants and provide a scientific basis for regional collaborative pollution prevention.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102305"},"PeriodicalIF":3.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326677","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}