ACS ES&T Air最新文献_第10页

Trace Metals Reveal Significant Contribution of Coal Combustion to Winter Haze Pollution in Northern China 痕量金属揭示燃煤对中国北方冬季灰霾污染的重要影响

ACS ES&T Air Pub Date : 2024-05-10 DOI: 10.1021/acsestair.4c00050

Hengqing Shen, Likun Xue*, Guolan Fan, Hongyu Xu, Zhanchao Zhang, Guang Pan, Tao Wang* and Wenxing Wang,

{"title":"Trace Metals Reveal Significant Contribution of Coal Combustion to Winter Haze Pollution in Northern China","authors":"Hengqing Shen, Likun Xue*, Guolan Fan, Hongyu Xu, Zhanchao Zhang, Guang Pan, Tao Wang* and Wenxing Wang, ","doi":"10.1021/acsestair.4c00050","DOIUrl":"10.1021/acsestair.4c00050","url":null,"abstract":"While the contribution of coal combustion to atmospheric particulate matter is well-recognized, its specific role in winter haze remains insufficiently explored. In this study, we elucidate the quantitative effect of coal combustion on winter haze pollution based on high temporal resolution measurements of trace metals in PM2.5. We identified arsenic (As) and selenium (Se) as reliable indicators of coal combustion, with their enrichment factors exceeding 104. The significant increase in As and Se concentrations (9.6-fold and 7.1-fold increase) during severe haze episodes underscores the enhanced contribution of coal combustion to winter haze pollution. Chemical mass closure results indicate that primary emissions from coal combustion contribute 15% to PM2.5, with its proportion in primary PM2.5 mass reaching 42% and 57% during non-haze and haze episodes, respectively. Simulations utilizing the multiphase chemical model (RACM-CAPRAM) indicate that transition metal-catalyzed oxidation is responsible for 68% of secondary sulfate formation, with the aqueous phase and surface catalysis contributing 59% and 9%, respectively. Excluding coal combustion-emitted SO2, Mn, and Fe results in a 49% reduction in secondary sulfate production. This research presents a comprehensive assessment of the impact of coal combustion on winter haze in northern China, offering vital insights for formulating effective pollution control strategies in the future.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 7","pages":"714–724"},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140990223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding Reductions of PM2.5 Concentration and Its Chemical Composition in the United States: Implications for Mitigation Strategies 了解美国 PM2.5 浓度的降低及其化学成分：对减缓战略的影响

ACS ES&T Air Pub Date : 2024-05-09 DOI: 10.1021/acsestair.4c00004

Chi Li*, Randall V. Martin and Aaron van Donkelaar,

{"title":"Understanding Reductions of PM2.5 Concentration and Its Chemical Composition in the United States: Implications for Mitigation Strategies","authors":"Chi Li*, Randall V. Martin and Aaron van Donkelaar, ","doi":"10.1021/acsestair.4c00004","DOIUrl":"10.1021/acsestair.4c00004","url":null,"abstract":"Motivated by the recent tightening of the US annual standard of fine particulate matter (PM2.5) concentrations from 12 to 9 μg/m3, there is a need to understand the spatial variation and drivers of historical PM2.5 reductions. We evaluate and interpret the variability of PM2.5 reductions across the contiguous US using high-resolution estimates of PM2.5 and its chemical composition over 1998–2019, inferred from satellite observations, air quality modeling, and ground-based measurements. We separated the 3092 counties into four characteristic regions sorted by PM2.5 trends. Region 1 (primarily Central Atlantic states, 25.9% population) exhibits the strongest population-weighted annual PM2.5 reduction (−3.6 ± 0.4%/yr) versus Region 2 (primarily rest of the eastern US, −3.0 ± 0.3%/yr, 39.7% population), Region 3 (primarily western Midwest, −1.9 ± 0.3%/yr, 25.6% population), and Region 4 (primarily the Mountain West, −0.4 ± 0.5%/yr, 8.9% population). Decomposition of these changes by chemical composition elucidates that sulfate exhibits the fastest reductions among all components in 2720 counties (76% of population), mostly over Regions 1–3, with the 1998–2019 mean sulfate mass fraction in PM2.5 decreasing from Region 1 (29.5%) to Region 4 (11.8%). Complete elimination of the remaining sulfate may be insufficient to meet the new standard for many regions in exceedance. Additional measures are needed to reduce other PM2.5 sources and components for further progress.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 7","pages":"637–645"},"PeriodicalIF":0.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140997744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation and Oxidation of Imidazole in Tropospheric Aqueous-Phase Chemistry: A Computational Study 对流层水相化学中咪唑的形成和氧化：计算研究

ACS ES&T Air Pub Date : 2024-05-09 DOI: 10.1021/acsestair.3c00097

Bo Wei, Ruifeng Zhang, Patrick H.-L. Sit*, Maoxia He and Chak K. Chan*,

{"title":"Formation and Oxidation of Imidazole in Tropospheric Aqueous-Phase Chemistry: A Computational Study","authors":"Bo Wei, Ruifeng Zhang, Patrick H.-L. Sit*, Maoxia He and Chak K. Chan*, ","doi":"10.1021/acsestair.3c00097","DOIUrl":"10.1021/acsestair.3c00097","url":null,"abstract":"Imidazole produced by the interaction of glyoxal with nitrogen-containing chemicals in atmospheric particles can yield secondary organic aerosol (SOA) due to atmospheric oxidation. However, knowledge about the aqueous phase reaction mechanism of imidazole formation and its oxidation is still very limited. This work investigated the formation mechanism and aqueous-phase oxidative degradation reactions of imidazole with the hydroxyl radical (•OH), nitrate radical (NO3•), and ozone (O3). Results showed that the formation of imidazole involves many dehydration reactions and is favorable under moderate- or low-RH conditions. The calculated atmospheric lifetimes of 14.05, 0.27, and 3.45 h for reactions with •OH, NO3•, and O3, respectively, suggest the efficient oxidation of imidazole under tropospheric aqueous-phase conditions. Formamide and oxamide are the main products in the presence of O2, and nitro-imidazoles can also be formed in the presence of NO2. The optical properties of imidazole evolve significantly, attributable to the formation of nitro-imidazoles, resulting in a red shift of absorption peak to the UVA and UVB region.Formamide and oxamide are the main aqueous oxidation products of imidazole, implying a potentially important source of SOA.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 7","pages":"617–627"},"PeriodicalIF":0.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestair.3c00097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140997237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the Risk of Organophosphate Esters from Nail Polish: Indoor Emissions, Fate Modeling, and Health Risk Assessment 评估指甲油中有机磷酯的风险：室内排放、命运模型和健康风险评估

ACS ES&T Air Pub Date : 2024-05-06 DOI: 10.1021/acsestair.4c00042

Tianqi Jia, Arturo A. Keller, Lirong Gao, Wenbin Liu*, Sasha Liu, Xiaotian Xu, Fei Yin, Yunchen He, Tianao Mao, Jinglin Deng, Javid Hussain and Chunci Chen,

{"title":"Assessing the Risk of Organophosphate Esters from Nail Polish: Indoor Emissions, Fate Modeling, and Health Risk Assessment","authors":"Tianqi Jia, Arturo A. Keller, Lirong Gao, Wenbin Liu*, Sasha Liu, Xiaotian Xu, Fei Yin, Yunchen He, Tianao Mao, Jinglin Deng, Javid Hussain and Chunci Chen, ","doi":"10.1021/acsestair.4c00042","DOIUrl":"10.1021/acsestair.4c00042","url":null,"abstract":"Organophosphate esters (OPEs) are commonly used as plasticizers in nail polish. There is limited research on OPEs release from nail polish into the environment and the associated health risks. This study employed a volatilization simulator, and indoor fugacity modeling (ICECRM) was used to predict OPEs emissions and indoor concentrations from nail polish. The concentrations of 11 OPEs in nail polish ranged from 0.38 to 1254 μg/g, with TPHP accounting for 87% of the total concentration. Following the application of nail polish, the OPEs emission rate was observed to peak at 1320 ng/h after 2 min, decreasing by approximately 62% after 30 min, and by around 77% after 1 h. In comparison to emission rates from other indoor items, nail polish exhibited notably higher emission rates, significantly impacting the indoor environment during daily usage. The ICECRM model outcomes predicted that the total OPE concentration in the air would reach 582 ng/m3, while the concentration would be 148 μg/g in particulate matter and 63.2 μg/g in dust. The health risk assessment suggests a potential increased risk of cancer (10–5) within the first hour of applying nail polish for nail salon workers. Therefore, this study strongly recommends proper ventilation and prompt cleaning of dust generated during nail polish application.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 7","pages":"704–713"},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141009633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of 222 nm Germicidal Ultraviolet Light on Aerosol and VOC Formation from Limonene 222 纳米紫外线杀菌灯对柠檬烯形成气溶胶和挥发性有机化合物的影响

ACS ES&T Air Pub Date : 2024-05-04 DOI: 10.1021/acsestair.4c00065

Olivia J. Jenks, Zhe Peng, Melinda K. Schueneman, Madison Rutherford, Anne V. Handschy, Douglas A. Day, Jose L. Jimenez and Joost A. de Gouw*,

{"title":"Effects of 222 nm Germicidal Ultraviolet Light on Aerosol and VOC Formation from Limonene","authors":"Olivia J. Jenks, Zhe Peng, Melinda K. Schueneman, Madison Rutherford, Anne V. Handschy, Douglas A. Day, Jose L. Jimenez and Joost A. de Gouw*, ","doi":"10.1021/acsestair.4c00065","DOIUrl":"10.1021/acsestair.4c00065","url":null,"abstract":"Since the 1930s, germicidal ultraviolet (GUV) irradiation has been used indoors to prevent the transmission of airborne diseases, such as tuberculosis and measles. Recently, it has received renewed attention due to the COVID-19 pandemic. While GUV radiation has been shown to be effective in inactivating airborne bacteria and viruses, few studies on the impact of GUV on indoor air quality have been published. In this work, we evaluate the effects of GUV222 (GUV at 222 nm) on the chemistry of a common indoor volatile organic compound (VOC), limonene. We found that the production of O3 by the GUV222 lamps caused the formation of particulate matter (PM) and oxygenated volatile organic compounds (VOCs). We also found that the chemistry proceeds through the ozonolysis of limonene as well as the reaction with secondary OH, and that the presence of GUV light led to observable but small perturbations to this chemistry. Understanding the effects of GUV222 on indoor air quality is important in evaluating the safety of these devices.Minimal knowledge of the direct impact of germicidal ultraviolet light on indoor air quality exists. This study found it to have a minor influence on aerosol formation from the oxidation of limonene, beyond the impacts on ozone and OH.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 7","pages":"725–733"},"PeriodicalIF":0.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestair.4c00065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141014531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of Sub-micrometer Ambient Sea Salt Number Size Distribution by Positive Matrix Factorization 通过正矩阵因式分解识别亚微米级环境海盐数量粒度分布

ACS ES&T Air Pub Date : 2024-05-03 DOI: 10.1021/acsestair.3c00092

Wei Xu*, Haobin Zhong, Chunshui Lin, Ru-Jin Huang, Jurgita Ovadnevaite, Darius Ceburnis* and Colin O’Dowd,

引用次数: 0

Hyperlocal Air Pollution in London: Validating Low-Cost Sensors for Mobile Measurements from Vehicles 伦敦超本地空气污染：验证用于车辆移动测量的低成本传感器

ACS ES&T Air Pub Date : 2024-05-03 DOI: 10.1021/acsestair.3c00043

Hugo S. Russell*, Louise B. Frederickson*, Martin O. B. Sørensen, Johan A. Schmidt, Ole Hertel and Matthew S. Johnson,

{"title":"Hyperlocal Air Pollution in London: Validating Low-Cost Sensors for Mobile Measurements from Vehicles","authors":"Hugo S. Russell*, Louise B. Frederickson*, Martin O. B. Sørensen, Johan A. Schmidt, Ole Hertel and Matthew S. Johnson, ","doi":"10.1021/acsestair.3c00043","DOIUrl":"10.1021/acsestair.3c00043","url":null,"abstract":"This study assesses low-cost sensors (LCS) for the mobile monitoring of air quality, which has thus far been scarcely investigated. NO2 and PM2.5 were measured using LCS and higher-grade instruments while driving across various environments in London (943 km) and northern Europe (2923 km), including urban areas, motorways, and tunnels. The data were classified according to the environment where the measurements were carried out, and the performances of LCS and higher-grade instruments were compared. Results indicate that the performances of the sensors were influenced by the rate of change in pollutant concentration in different environments and not by vehicle speed. Excluding tunnel environments, overall, the particulate matter sensors correlated better with their higher-grade instrument than the electrochemical (EC) sensors, with R2 values from 0.90–0.96 in the different environments, compared with 0.39–0.72 for the EC sensors. Tunnels presented a unique opportunity to test the time response of the systems, given the rapid change in concentration upon entering, and all sensors showed limited response times. This is the first time that EC NO2 sensors have been rigorously tested against reference monitors while mobile. Their absolute measurements appear unaffected by movement; however, their time resolution may not be high enough for mobile monitoring in highly variable environments.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 6","pages":"438–450"},"PeriodicalIF":0.0,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141015136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sources of Wintertime Atmospheric Organic Pollutants in a Large Canadian City: Insights from Particle and Gas Phase Measurements 加拿大某大城市冬季大气有机污染物的来源：从粒子和气相测量中获得的启示

ACS ES&T Air Pub Date : 2024-05-03 DOI: 10.1021/acsestair.4c00039

Laura-Helena Rivellini, Spiro Jorga, Yutong Wang, Alex K.Y. Lee, Jennifer G. Murphy, Arthur W. Chan and Jonathan P.D. Abbatt*,

{"title":"Sources of Wintertime Atmospheric Organic Pollutants in a Large Canadian City: Insights from Particle and Gas Phase Measurements","authors":"Laura-Helena Rivellini, Spiro Jorga, Yutong Wang, Alex K.Y. Lee, Jennifer G. Murphy, Arthur W. Chan and Jonathan P.D. Abbatt*, ","doi":"10.1021/acsestair.4c00039","DOIUrl":"10.1021/acsestair.4c00039","url":null,"abstract":"Although atmospheric organic pollutants have been extensively studied to elucidate summertime urban photochemical air pollution, uncertainties remain concerning the quality of wintertime air in large northern North American cities. Here, we used online mass spectrometric measurements of volatile organic compounds (VOCs) and organic aerosol (OA), combined with positive matrix factorization (PMF), to identify sources of organic pollutants in downtown Toronto, Canada during February–March 2023. In some cases, comparable PMF factors were identified for both VOCs and OA, such as from traffic, cooking, and background oxygenated sources. However, VOC PMF yielded additional information, such as a factor associated with human-related emissions of VOCs. Additionally, VOC PMF yields two traffic factors: one likely related to gasoline and one to diesel use. Despite cold and relatively dark conditions, the OA and VOC oxygenated factors both grow in intensity during the daytime, indicative of photochemical activity, whereas the traffic and cooking factors were enhanced in the morning and late evening due to the timing of vehicle use, cooking, and boundary layer effects. This study illustrates the benefits that arise from the parallel source–receptor analyses of organic gases and aerosol particles.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 7","pages":"690–703"},"PeriodicalIF":0.0,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141017639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Volatile Organic Compound Composition and Emissions in a Residential Attic 住宅阁楼中的挥发性有机化合物成分和排放量

ACS ES&T Air Pub Date : 2024-05-02 DOI: 10.1021/acsestair.4c00040

Betty Molinier*, Caleb Arata, David M. Lunderberg, Brett C. Singer, William W Nazaroff and Allen H. Goldstein,

{"title":"Volatile Organic Compound Composition and Emissions in a Residential Attic","authors":"Betty Molinier*, Caleb Arata, David M. Lunderberg, Brett C. Singer, William W Nazaroff and Allen H. Goldstein, ","doi":"10.1021/acsestair.4c00040","DOIUrl":"10.1021/acsestair.4c00040","url":null,"abstract":"Volatile organic compounds (VOCs) are important constituents of indoor and urban air pollution. Emissions into building attics have rarely been studied, resulting in a lack of information about this potentially important air pollution source. VOC transport from residential attics to outdoor air is generally missing from emission inventories. In this study, attic VOC concentrations and emissions were assessed in a normally-occupied single-family residence in Oakland, California over 10 weeks during autumn 2021. A proton-transfer-reaction time-of-flight mass spectrometer was utilized to sequentially measure VOC concentrations in the attic, the living space, and outdoors at a rate of twice per hour. Over 200 VOCs were detected at concentrations averaging above five parts per trillion, including many known to be emitted from building materials and wood decomposition. Inert tracer gases were continuously released at known rates into the attic, living zone, and basement to characterize air change rates and interzonal flows. Combining the measurements in a material-balance model, we determine time-resolved and speciated VOC emission factors into the attic and to outdoors from the attic. We find that furfural is a key indicator species and that large diurnal temperature changes in the attic significantly influence VOC emissions from the attic to outdoors.Information regarding residential attic VOC composition and emission rates is scarce. This study reports average concentrations and investigates the temperature dependence of direct attic VOC emission rates.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 6","pages":"559–569"},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestair.4c00040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141017701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced HONO Formation from Aqueous Nitrate Photochemistry in the Presence of Marine Relevant Organics: Impact of Marine-Dissolved Organic Matter (m-DOM) Concentration on HONO Yields and Potential Synergistic Effects of Compounds within m-DOM 在存在海洋相关有机物的情况下，水体硝酸盐光化学作用增强了 HONO 的形成：海洋溶解有机物 (m-DOM) 浓度对 HONO 产量的影响以及 m-DOM 中化合物的潜在协同效应

ACS ES&T Air Pub Date : 2024-04-30 DOI: 10.1021/acsestair.4c00006

Stephanie L. Mora García, Israel Gutierrez, Jillian V. Nguyen, Juan G. Navea* and Vicki H. Grassian*,

{"title":"Enhanced HONO Formation from Aqueous Nitrate Photochemistry in the Presence of Marine Relevant Organics: Impact of Marine-Dissolved Organic Matter (m-DOM) Concentration on HONO Yields and Potential Synergistic Effects of Compounds within m-DOM","authors":"Stephanie L. Mora García, Israel Gutierrez, Jillian V. Nguyen, Juan G. Navea* and Vicki H. Grassian*, ","doi":"10.1021/acsestair.4c00006","DOIUrl":"https://doi.org/10.1021/acsestair.4c00006","url":null,"abstract":"Nitrous acid (HONO) is a key molecule in the reactive nitrogen cycle. However, sources and sinks for HONO are not fully understood. Particulate nitrate photochemistry has been suggested to play a role in the formation of HONO in the marine boundary layer (MBL). Here we investigate the impact of marine relevant organic compounds on HONO formation from aqueous nitrate photochemistry. In particular, steady-state, gas-phase HONO yields were measured from irradiated nitrate solutions at low pH containing marine-dissolved organic matter (m-DOM). m-DOM induces a nonlinear increase in HONO yield across all concentrations compared to that for pure nitrate solutions, with rates of HONO formation increasing by up to 3-fold when m-DOM is present. Furthermore, to understand the potential synergistic effects that may occur within complex samples such as m-DOM, mixtures of chromophoric (light-absorbing) and aliphatic (non-light-absorbing) molecular proxies were utilized. In particular, mixtures of 4-benzoylbenzoic acid (4-BBA) and ethylene glycol (EG) in acidic aqueous solutions containing nitrate showed more HONO upon irradiation compared to solutions containing only one of the molecular proxies. This suggests that synergistic effects in the HONO formation can occur in complex organic samples. Atmospheric implications of the results presented here are discussed.This study examines how marine-dissolved organic matter enhances the photochemical conversion of nitrate into nitrous acid and uncovers synergistic effects in the formation of nitrous acid in the environment.","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"1 6","pages":"525–535"},"PeriodicalIF":0.0,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestair.4c00006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141322340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0