Air Quality Atmosphere and Health最新文献

{"title":"An empirical analysis of agricultural and rural carbon emissions under the background of rural revitalization strategy–based on machine learning algorithm","authors":"XiaoYu Niu,&nbsp;YuZhu Tian,&nbsp;ManLai Tang,&nbsp;ZhiBao Mian","doi":"10.1007/s11869-024-01606-2","DOIUrl":"10.1007/s11869-024-01606-2","url":null,"abstract":"<div><p>Agricultural and rural carbon (ARC) emissions are a major source of greenhouse gas emissions in China and have profound implications for implementing the rural revitalization strategy. This study takes Shandong Province, a leading agricultural province in China, as a case study to explore the relationship between ARC emissions and their influencing factors. It employs the Logarithmic Mean Divisia Index (LMDI) model to decompose changes in ARC emissions from 2000 to 2021, analyzing the contributions of factors such as agricultural production efficiency and agricultural industrial structure. The study then expands the indicator system and applies feature selection methods to identify the main influencing factors. It establishes Bayes model averaging (BMA), STIRPAT-Ridge regression and Long Short-Term Memory (LSTM) models to evaluate their performance in modeling historical ARC emissions. Finally, the study makes prospective forecasts of ARC emissions in Shandong Province from 2022 to 2050 under low, medium and high speed development scenarios. The findings show that from 2000 to 2021, ARC emission intensity decreased by 71.86% in Shandong. Key factors like agricultural production efficiency and agricultural industrial structure exhibited emission reduction effects. Agricultural production efficiency, electricity consumption, agricultural economic level, and transportation travel positively impact ARC emissions, with agricultural production efficiency and electricity consumption as the dominant factors. Under the development high-speed scenario, ARC emissions are projected to peak around 2030. Reducing carbon emissions intensity, improving resource use efficiency and maintaining steady economic growth are crucial for controlling future ARC emissions and achieving sustainable development in Shandong Province.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 12","pages":"2819 - 2837"},"PeriodicalIF":2.9,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141567196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"The impact of respirable dust exposure on lung function parameters of motorcycle taxi drivers in Bangkok and adjacent provinces, Thailand","authors":"Kamonwan Samana,&nbsp;Kimihito Ito,&nbsp;Orasa Suthienkul,&nbsp;Arroon Ketsakorn","doi":"10.1007/s11869-024-01599-y","DOIUrl":"10.1007/s11869-024-01599-y","url":null,"abstract":"<div><p>The motorcycle taxi drivers of Bangkok and adjacent provinces in Thailand may have been heavily exposed to ambient air pollution and the impact of this on their lungs has been neither documented nor studied. In this study, we recruited a total of 343 motorcycle taxi drivers in Bangkok and adjacent provinces in Thailand and their lung function parameters were analyzed using spirometry in May and June 2022. Of these, 153 participants were selected and their exposure to respirable dust during working was measured by personal air sampling. Respirable dust concentrations collected with personal air sampling suggested that motorcycle taxi drivers working at workstations where they were exposed to respirable dust at high concentrations tended to have a low percent predicted FEV₁. Twelve% and 7.3% of motorcycle taxi drivers recruited in this study had the symptoms of chronic bronchitis and acute bronchitis, respectively. These results suggested that some motorcycle taxi drivers around Bangkok and adjacent provinces had a high risk of occupational exposure to ambient air pollution. The government needs to establish a medical check-up system for motorcycle taxi drivers to monitor their health status.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2739 - 2751"},"PeriodicalIF":2.9,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11869-024-01599-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Developing a novel hybrid model based on deep neural networks and discrete wavelet transform algorithm for prediction of daily air temperature","authors":"Redvan Ghasemlounia,&nbsp;Amin Gharehbaghi,&nbsp;Farshad Ahmadi,&nbsp;Mohammad Albaji","doi":"10.1007/s11869-024-01595-2","DOIUrl":"10.1007/s11869-024-01595-2","url":null,"abstract":"<div><p>The precise predicting of air temperature has a significant influence in many sectors such as agriculture, industry, modeling environmental processes. In this work, to predict the mean daily time series air temperature in Muğla city (<i>AT</i>_<i>m</i>), Turkey, initially, five different layer structures of Long Short-Term Memory (LSTM) and Gated Recurrent Unit (GRU) deep learning-based neural network models through the seq2seq regression forecast module are developed. Then, based on performance evaluation metrics, an optimal DL-based layer network structure designed is chosen to hybridize with the wavelet transform (WT) algorithm (i.e., WT-DNN model) to enhance the estimation capability. In this direction, among potential meteorological variables considered, the average daily sunshine duration (<i>SSD</i>) (hours), total global solar radiation (<i>TGSR</i>) (kw. hour/m²), and total global insolation intensity (<i>TGSI</i>) (watt/m²) from Jan 2014 to Dec 2019 are picked as the most effective input variables through correlation analysis to predict <i>AT</i>_<i>m</i>. To thwart overfitting and underfitting problems, different algorithm tuning along with trial-and-error procedures through diverse types of hyper-parameters are performed. Consistent with the performance evaluation standards, comparison plots, and Total Learnable Parameters (<i>TLP</i>) value, the state-of-the-art and unique proposed hybrid WT-(LSTM × GRU) model (i.e., hybrid WT with the coupled version of LSTM and GRU models via Multiplication layer (<span>(times)</span>)) is confirmed as the best model developed. This hybrid model under the ideal hyper-parameters resulted in an <i>R</i>^<i>2</i> = 0.94, an <i>RMSE</i> = 0.56 (^°C), an <i>MBE</i> = -0.5 (^°C), <i>AICc</i> = -382.01, and a running time of 376 (s) in 2000 iterations. Nonetheless, the standard single LSTM layer network model as benchmark model resulted in an <i>R</i>^<i>2</i> = 0.63, an <i>RMSE</i> = 4.69 (^°C), an <i>MBE</i> = -0.89 (^°C), <i>AICc</i> = 1021.8, and a running time of 186 (s) in 2000 iterations.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2723 - 2737"},"PeriodicalIF":2.9,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Long-term changes of surface ozone and ozone sensitivity over the North China Plain based on 2015–2021 satellite retrievals","authors":"Chuanyong Zhu,&nbsp;Yichao Gai,&nbsp;Zhenguo Liu,&nbsp;Lei Sun,&nbsp;Siyuan Fu,&nbsp;Kun Liu,&nbsp;Leifeng Yang,&nbsp;Guang Pan,&nbsp;Baolin Wang,&nbsp;Chen Wang,&nbsp;Na Yang,&nbsp;Zhisheng Li,&nbsp;Chongqing Xu,&nbsp;Guihuan Yan","doi":"10.1007/s11869-024-01598-z","DOIUrl":"10.1007/s11869-024-01598-z","url":null,"abstract":"<div><p>Despite the implementation of stringent pollution control measures, surface ozone (O₃) pollution remains a significant issue in the North China Plain (NCP) in recent years. Here we examined long-term changes in surface O₃ concentrations during 2015–2021 in the NCP. The mean summer maximum daily 8-hour average ozone concentration exhibited an annual increase of 12.77 µg m^− 3 (<i>p</i> &lt; 0.01) from 2015 to 2019, followed by a decline from 174 µg m^− 3 in 2019 to 157 µg m^− 3 in 2021. Subsequently, satellite-based formaldehyde (HCHO) and nitrogen dioxide (NO₂) columns were used to track volatile organic compounds (VOCs) and nitrogen oxides (NO_<i>x</i>) emissions to evaluate the causes of O₃ changes. Results showed that the increase of HCHO column and the sharp decline of NO₂ column have indeed led to no decrease in O₃ concentration and even contributed to O₃ enhancement in most areas in 2015–2019. However, the sharp decline of HCHO and NO₂ columns contributed to the decline of O₃ concentration since 2020. The HCHO/NO₂ values showed a transitional regime ranging from 4.23 to 5.05 and the O₃ sensitivities were predominantly VOC-limited and transitional regimes in 2019–2021, varying among different mega-city clusters. The HCHO/NO₂ increased from 2.62 ± 2.41 in 2015 to 2.99 ± 3.49 in 2019 but decreased since then, facilitating O₃ formation regime transition from NO_<i>x</i>-limited to transitional (or from transitional to VOC-limited) regimes, which contributed to the decline in O₃ levels. The study determined that the optimal ratio of HCHO to NO₂ for reducing O₃ concentration is 4.66 for the NCP.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2753 - 2766"},"PeriodicalIF":2.9,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Ozone production sensitivity in the highland city of Lhasa: a comparative analysis with Beijing","authors":"Yi Chen,&nbsp;Suzhen Chi,&nbsp;Yaru Wang,&nbsp;Shuzheng Guo,&nbsp;Chong Zhang,&nbsp;Chunxiang Ye,&nbsp;Weili Lin","doi":"10.1007/s11869-024-01604-4","DOIUrl":"10.1007/s11869-024-01604-4","url":null,"abstract":"<div><p>As Lhasa experiences accelerated urbanization and increased pollutant emission intensity, controlling ozone pollution becomes more challenging due to increased photochemical reactions—a problem exacerbated by the city’s already high solar UV radiation and background ozone levels. In order to reveals the intricacies of ozone formation, this study conducted direct ozone production rate (OPR) measurements in Lhasa in June 2021, comparing them to findings in Beijing in similar climatic conditions. Despite lower NO_x levels, Lhasa exhibited a higher OPR with reduced variations (12.8 ± 6.0 ppbv h^-1) due to stronger UVR and OH reactivity (VOC-<i>k</i>_OH) influenced by oxidized volatile organic compounds when compared to Beijing (9.4 ± 11.0 ppbv h^-1). When adjusting for comparable UVR conditions, Lhasa demonstrated a less pronounced NO turning point in OPR compared to Beijing. Lhasa’s unique bridge-shaped VOC-<i>k</i>_OH diel variation favored daytime peroxy radical production, pushing the NO turning point higher from morning to noon, resulting in a NO_x-limited regime except in the early morning. Furthermore, the accumulation of OVOCs in the Lhasa River valley, coupled with rapid photochemical production despite relatively low VOCs emissions, explained the elevated VOC-<i>k</i>_OH levels. This suggests that OVOCs and, consequently, O₃ pollution could worsen with future VOCs emission increases, possibly triggered by factors like rapid warming and local afforestation initiatives. Our findings highlight the complex and sensitive nature of O₃ pollution in Lhasa and other Tibetan Plateau cities, emphasizing the need for continued monitoring and in-depth research to develop effective control strategies.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2711 - 2721"},"PeriodicalIF":2.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Evaluation of size–segregated bioaerosols concentration, deposition fraction and inhalation dose in individuals of an educational institute: a case study for health risk assessment","authors":"Chirashree Ghosh,&nbsp;Kritika Bisht,&nbsp;Ankita Shelly,&nbsp;Rekha Kumari","doi":"10.1007/s11869-024-01601-7","DOIUrl":"10.1007/s11869-024-01601-7","url":null,"abstract":"<div><p>Bioaerosols, airborne biological particles, are present ubiquitously in nature. When inhaled, ingested, or exposed to the skin, can pose various health risks. Bioaerosols sampling is crucial for educational institutes in view of high occupancy, long exposure duration and proximity between occupants. A comprehensive study was designed to determine size-segregated bioaerosols concentration, size-wise deposition fraction, and the dose inhaled by the exposed population. The bacterial and fungal bioaerosols concentrations were measured at 4 locations viz. undergraduate laboratory (IN 1), Molecular Biotechnology and Bioinformatics Laboratory (IN 2), college nursery (OUT 1) and open cafeteria (OUT 2). Sampling was conducted using a 6-stage viable Andersen cascade impactor and culturable bioaerosols were counted by colony counting method. The highest average concentrations of bacterial and fungal bioaerosols were found in IN 1 and OUT 1. The bioaerosols concentration was influenced by a complex interplay of factors, majorly including ventilation, footfall, occupancy, and surrounding vegetation. The size distribution analysis showed that a significant portion was in the respirable size range (&lt; 4.5 μm), capable of reaching the lower respiratory tract and causing potential health issues. The dosimetry modelling further assisted in predicting the bioaerosols dose deposition in different regions of the human respiratory tract. Subsequently, to discern the connection between bioaerosols exposure and respiratory ailments, bioaerosols exposure awareness and health survey was conducted for individuals in the vicinity of sampling locations. The knowledge garnered from the study can make the basis for the health risk assessment due to bioaerosols exposure in educational environments to appraise potential health hazards.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2693 - 2709"},"PeriodicalIF":2.9,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Evaluation of air pollution tolerance index of urban roadside young leaf and the correlation with its capturing capacity for water-insoluble fine particulate matters","authors":"Chen He,&nbsp;Zhuofan Zhang,&nbsp;Qi Wang,&nbsp;Yupeng Zhang,&nbsp;Chenhui Wei,&nbsp;Lin Zhang,&nbsp;Zhuo Li,&nbsp;Hongqian Yu,&nbsp;Chunyan Chang,&nbsp;Yilong Zhang","doi":"10.1007/s11869-024-01603-5","DOIUrl":"10.1007/s11869-024-01603-5","url":null,"abstract":"<div><p>The selection of plant species has been accepted as a crucial factor when developing roadside greenbelts which act as a cost-effective and eco-friendly passive method for the reduction of traffic related particle pollution. Plants growing alongside roads are mostly affected because they are primary recipients to different pollutants and show varied sensitivity and tolerance. Taking this into account, young leaves of eight kinds of common roadside plants (<i>Ligustrum lucidum</i>, <i>Prunus cerasifera</i>, <i>Photinia fraseri</i>, <i>Photinia serratifolia</i>, <i>Nandina domestica</i>, <i>Paeonia suffruticosa</i> Andr., <i>Nerium oleander</i>, and <i>Eriobotrya japonica</i>) in central China were collected and their air pollution tolerance index (APTI) was calculated by assessing four biochemical parameters i.e., relative water content, total chlorophyll content, ascorbic acid, leaf extract pH. The results demonstrated that young leaves of <i>N. oleande</i>r and <i>L. lucidum</i> showed higher APTI value (8.90–9.45 and 8.73 to 9.17 respectively) in the three tested springtime month and were the most tolerant species, while young leaves of <i>E. japonica</i> kept to be sensitive (with the APTI value around 5.72 to 8.29) during the whole spring. In addition, inconsistent with previous studies, relative water content other than ascorbic acid was found to be more crucial for young leaves of test plants to be more tolerant to particle pollution in relatively dry condition in spring (<i>r</i> = 0.996 at <i>p</i> &lt; 0.01 level). At last, except significant impact on the capture of PM_2.5, the tolerance of young leaves has limited impacts on their ability to reduce other size fine particle such as TSP and PM₁₀. In summary, <i>N. oleande</i>r and <i>L. lucidum</i> are recommended to be used as particle sink when developing urban green belt, and <i>E. japonica</i> is more suitable as a bio-monitor of air quality.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2675 - 2691"},"PeriodicalIF":2.9,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Understanding the dynamics and implications of airborne microplastics in atmosphere","authors":"Bhupendra Pratap Singh","doi":"10.1007/s11869-024-01593-4","DOIUrl":"10.1007/s11869-024-01593-4","url":null,"abstract":"<div><p>Airborne microplastics (MPs), measuring less than five millimeters in size, have gained substantial attention due to their omnipresence in the environment, including the atmosphere, and their potential impact on both human health and ecosystems. This comprehensive literature review synthesizes current knowledge on the sources, distribution, and health risks associated with airborne MPs. The significant rise in global plastic production has concerns about its harmful effects on the environment and human health. Microplastics, being pervasive across various ecosystems, can traverse the food chain. They also have the potential to disperse through the air. Various studies have emphasized the role of airborne MPs as carriers for toxic substances, impacting environmental and human health. This review delineates the sources of atmospheric MPs, stemming from primary sources such as commercial products and secondary sources from larger plastic degradation. Moreover, a comprehensive understanding of MPs’ size, shape, and polymeric composition is crucial for a thorough assessment of their potential impact on human health. Notably, while airborne MPs tend to encompass a variety of shapes, including fibers, fragments, and granules, their health implications vary. Fibrous MPs, despite their visibility, raise concerns due to entanglement and prolonged residence within organisms. However, research suggests that most of the airborne MPs consist of smaller particles, highlighting the need for further investigation into their impact on health. Although advancements have been made in understanding airborne MPs, substantial gaps remain. Standardized sampling methods, comprehensive risk assessments, and long-term epidemiological studies are essential to unravel the health implications of prolonged exposure to these omnipresent particles. This literature review underlines the need for continued research to fully comprehend the sources, distribution, and health risks posed by airborne microplastics, offering insights into potential mitigation strategies and future research directions.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2661 - 2674"},"PeriodicalIF":2.9,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Topological clustering in investigating spatial patterns of particulate matter between air quality monitoring stations in malaysia","authors":"Nur Fariha Syaqina Zulkepli,&nbsp;Vine Nwabuisi Madukpe,&nbsp;Mohd Salmi Md Noorani,&nbsp;Mohd Aftar Abu Bakar,&nbsp;R. U. Gobithaasan,&nbsp;Ooi Cheng Jie","doi":"10.1007/s11869-024-01596-1","DOIUrl":"10.1007/s11869-024-01596-1","url":null,"abstract":"<div><p>Air pollution is a persistent issue that arises worldwide. Mitigating this issue poses a significant challenge due to endless industrialization activities, rising construction works and vehicle emissions on the road. Particulate matter (PM₁₀) with an aerodynamic diameter of less than 10 µm is one of the primary pollutants that significantly impact human health. Identifying the spatial pattern of PM₁₀ yields spatially homogenous areas and reveals the most polluted sites and potential PM₁₀ sources of pollution. Typically, traditional clustering is used to achieve the objective. This study proposed a different clustering approach by opting topological data analysis (TDA) technique, namely the Mapper algorithm, to investigate for the spatial patterns of PM₁₀ behavior between 52 air quality monitoring stations in Malaysia. A topological clustering approach produces a topological graph revealing the homogenous region with similar PM₁₀ behavior and a more profound understanding of geographical relationship is achieved through the graph. The topological graph depicts better visualization of cluster similarities pertaining to the study areas compared to traditional clustering, highlighting the advantage of such an approach in investigating the spatial patterns of air pollutants.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2647 - 2659"},"PeriodicalIF":2.9,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Annual variations in characteristics and sources analysis of VOCs during the ozone season in the Taiyuan Basin, China, from 2020 to 2022","authors":"Zhentao Wang,&nbsp;Tengfei Long,&nbsp;Yang Cui,&nbsp;Qiusheng He,&nbsp;Jun Wang,&nbsp;Shaolong Gao,&nbsp;Xinming Wang","doi":"10.1007/s11869-024-01597-0","DOIUrl":"10.1007/s11869-024-01597-0","url":null,"abstract":"<div><p>As an important precursor of ozone (O₃), volatile organic compounds (VOCs) have garnered significant attention in recent years. In this study, VOCs were monitored by a real-time online instrument for three years (from April to September 2020–2022) in Jinzhong, Taiyuan Basin, and comprehensively reported the components characteristics, sources, and ozone formation potential (OFP). The interannual variation in VOCs concentration increased from 11.2 ± 8.2 ppbv in 2020 to 12.9 ± 9.2 ppbv in 2021 and 13.3 ± 8.9 ppbv in 2022. Alkanes were the major VOC groups, accounting for 55.8-64.6% of the total. However, alkenes were the primary contributors to OFP, accounting for 64.3-74.2%. After meteorological normalization, the concentrations of alkanes, alkynes, and aromatics were slightly higher than the observed concentrations, indicating that meteorological conditions favored the dispersion of pollutants. Based on positive matrix factorization (PMF) model, coking sources (28.4-30.7%), LPG/NG usage (17.9-30.5%), and vehicle exhaust (17.5-23.2%) were the major sources of VOCs during the three year observation period. The contributions of solvent usage, biogenic sources, and combustion sources increased with each year. Coking sources (47.5-52.7%) and vehicular emissions (23.2-32.3%), particularly ethylene, were major contributors to OFP. The analysis of potential source regions for VOCs concentration pointed to the southwest region (Qingxu, Wenshui, Xiaoyi, and Jiexiu) as a key emitter of VOCs. Therefore, the study recommends effective mitigation of ozone issues in Jinzhong and the downwind areas of the Taiyuan Basin by controlling coking sources and vehicular emissions, particularly targeting ethylene emissions.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"17 11","pages":"2631 - 2646"},"PeriodicalIF":2.9,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141348513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}