Pub Date : 2024-10-11eCollection Date: 2025-01-01DOI: 10.1080/02786826.2024.2412652
Megan M McRee, Vaios Moschos, Marc N Fiddler, Dario Massabò, Jason D Surratt, Solomon Bililign
Biomass burning (BB) is a major source of atmospheric fine carbonaceous aerosols, which play a significant, yet uncertain, role in modulating the Earth's radiation balance. However, accurately representing their optical properties in climate models remains challenging due to factors such as particle size, mixing state, combustion type, chemical composition, aging processes, and relative humidity (RH). In our study, we investigated BB organic-rich aerosols generated from smoldering sub-Saharan African biomass fuels. Fuel samples were collected in Africa and aerosols generated in the laboratory. We quantified key optical parameters, including mass cross-sections for extinction (2.04 ± 0.32 - 15.5 ± 2.48 m2/g), absorption (0.04 ± 0.01-0.3 ± 0.1 m2/g), and scattering (1.9 ± 0.68-15.3 ± 5.5 m2/g). Wavelength-dependent properties were used to determine absorption and scattering Ångström exponents. The single scattering albedo of these aerosols ranged from 0.8 ± 0.03 to 1.0 ± 0.04 and we observed a wavelength-dependent behavior. Extinction emission factors were determined at a wavelength of 550 nm, with values ranging from 42 ± 5 to 293 ± 32 m2/kg. Notably, optical properties exhibited fuel-type dependence, with differences observed between hardwood samples and other fuels, such as grass and animal dung. Aging increased mass extinction and scattering cross-sections at 550 nm, while humidity had the opposite effect across all fuels. Nitrate radical oxidation, both in photo and dark aging conditions, also influenced these properties. The findings are expected to close the gap in our understanding of optical properties of BB aerosol emissions in one of the least studied regions of the world - Africa - providing information to climate and air quality models for the region.
{"title":"Influence of relative humidity and aging on the optical properties of organic aerosols from burning African biomass fuels.","authors":"Megan M McRee, Vaios Moschos, Marc N Fiddler, Dario Massabò, Jason D Surratt, Solomon Bililign","doi":"10.1080/02786826.2024.2412652","DOIUrl":"10.1080/02786826.2024.2412652","url":null,"abstract":"<p><p>Biomass burning (BB) is a major source of atmospheric fine carbonaceous aerosols, which play a significant, yet uncertain, role in modulating the Earth's radiation balance. However, accurately representing their optical properties in climate models remains challenging due to factors such as particle size, mixing state, combustion type, chemical composition, aging processes, and relative humidity (RH). In our study, we investigated BB organic-rich aerosols generated from smoldering sub-Saharan African biomass fuels. Fuel samples were collected in Africa and aerosols generated in the laboratory. We quantified key optical parameters, including mass cross-sections for extinction (2.04 ± 0.32 - 15.5 ± 2.48 m<sup>2</sup>/g), absorption (0.04 ± 0.01-0.3 ± 0.1 m<sup>2</sup>/g), and scattering (1.9 ± 0.68-15.3 ± 5.5 m<sup>2</sup>/g). Wavelength-dependent properties were used to determine absorption and scattering Ångström exponents. The single scattering albedo of these aerosols ranged from 0.8 ± 0.03 to 1.0 ± 0.04 and we observed a wavelength-dependent behavior. Extinction emission factors were determined at a wavelength of 550 nm, with values ranging from 42 ± 5 to 293 ± 32 m<sup>2</sup>/kg. Notably, optical properties exhibited fuel-type dependence, with differences observed between hardwood samples and other fuels, such as grass and animal dung. Aging increased mass extinction and scattering cross-sections at 550 nm, while humidity had the opposite effect across all fuels. Nitrate radical oxidation, both in photo and dark aging conditions, also influenced these properties. The findings are expected to close the gap in our understanding of optical properties of BB aerosol emissions in one of the least studied regions of the world - Africa - providing information to climate and air quality models for the region.</p>","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"59 5","pages":"544-566"},"PeriodicalIF":2.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11934956/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717784","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}
Pub Date : 2024-09-12DOI: 10.1080/02786826.2024.2395940
Sébastien Cantin, Mohamed Chouak, François Garnier
Aviation-induced particulate matter directly affects the climate, the atmospheric composition at flight altitudes, and local air quality near airports. Meeting environmental regulations is a key ch...
{"title":"Eulerian–Lagrangian CFD-microphysics modeling of aircraft-emitted aerosol formation at ground-level","authors":"Sébastien Cantin, Mohamed Chouak, François Garnier","doi":"10.1080/02786826.2024.2395940","DOIUrl":"https://doi.org/10.1080/02786826.2024.2395940","url":null,"abstract":"Aviation-induced particulate matter directly affects the climate, the atmospheric composition at flight altitudes, and local air quality near airports. Meeting environmental regulations is a key ch...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"232 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142265146","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}
Thermally diffusive laminar-flow condensation particle counters (CPCs) often utilize alcohol or water as the working fluid to condense and grow particles large enough for optical detection. Differe...
{"title":"A convertible condensation particle counter using alcohol or water as the working fluid","authors":"Yiran Li, Xiaotong Chen, Jin Wu, Qiang Zhang, Zhenzhong Zhang, Jiming Hao, Jingkun Jiang","doi":"10.1080/02786826.2024.2395939","DOIUrl":"https://doi.org/10.1080/02786826.2024.2395939","url":null,"abstract":"Thermally diffusive laminar-flow condensation particle counters (CPCs) often utilize alcohol or water as the working fluid to condense and grow particles large enough for optical detection. Differe...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"4 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200796","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}
Cooking has been recognized as one of the most important sources of indoor air pollutants. Several studies evaluated black carbon emissions from cooking fumes. Black carbon (BC) could affect human ...
{"title":"A comparative assessment of black carbon emissions during heating 17 commercial cooking oils","authors":"Mostafa Salmanimojaveri, Motahareh Naseri, Tomiris Madiyarova, Nadezhda Ushakova, Karina Yessengaziyeva, Gulnur Sultan, Enoch Adotey, Gulnaz Zhemeney, Seyed Morteza Zamir, Ali Darvishi Omrani, Farzaneh Jafarigol, Sumit Sankhyan, Shelly Miller, Lance Wallace, Dhawal Shah, Mehdi Amouei Torkmahalleh","doi":"10.1080/02786826.2024.2394599","DOIUrl":"https://doi.org/10.1080/02786826.2024.2394599","url":null,"abstract":"Cooking has been recognized as one of the most important sources of indoor air pollutants. Several studies evaluated black carbon emissions from cooking fumes. Black carbon (BC) could affect human ...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"54 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200795","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}
Pub Date : 2024-09-03DOI: 10.1080/02786826.2024.2394593
Niklas Baltz, Jan Olof Svensson, Marcus Skogevall, Ann Ohlsson, Mårten Svensson, Regina Scherließ
The expanding role of the nasal route in drug administration for local and systemic treatments has prompted the need for precise delivery methods to ensure efficacy and patient safety. This study a...
{"title":"Advancing nasal formulation characterization: Considerations toward a robust and precise method to determine the mass fraction below 10 μm in nasal products","authors":"Niklas Baltz, Jan Olof Svensson, Marcus Skogevall, Ann Ohlsson, Mårten Svensson, Regina Scherließ","doi":"10.1080/02786826.2024.2394593","DOIUrl":"https://doi.org/10.1080/02786826.2024.2394593","url":null,"abstract":"The expanding role of the nasal route in drug administration for local and systemic treatments has prompted the need for precise delivery methods to ensure efficacy and patient safety. This study a...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200794","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}
Pub Date : 2024-09-03DOI: 10.1080/02786826.2024.2393829
Jimin Hwang, Woo Jin Kim, Kum Ju Chae, Gong Yong Jin, Chang Hyun Lee, Xinguang Cui, Sanghun Choi
Exposure to cement dust can cause respiratory problems and structural changes in respiratory airways. Computed tomography (CT) has shown that the airways of individuals with cement dust exposure (C...
接触水泥粉尘会导致呼吸系统疾病和呼吸道结构变化。计算机断层扫描（CT）显示，接触水泥粉尘（C...
{"title":"A numerical study on airflow and particle transport characteristics of subjects with cement dust exposure","authors":"Jimin Hwang, Woo Jin Kim, Kum Ju Chae, Gong Yong Jin, Chang Hyun Lee, Xinguang Cui, Sanghun Choi","doi":"10.1080/02786826.2024.2393829","DOIUrl":"https://doi.org/10.1080/02786826.2024.2393829","url":null,"abstract":"Exposure to cement dust can cause respiratory problems and structural changes in respiratory airways. Computed tomography (CT) has shown that the airways of individuals with cement dust exposure (C...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"42 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225789","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}
Pub Date : 2024-08-29DOI: 10.1080/02786826.2024.2390669
Edward Neal, Lukesh K. Mahato, Elin Butler, Richard J. Thomas, Maurice D. Walker, Jack C. Vincent, Simon T. Parker, Virginia E. Foot, Emily S. Kruger, Benjamin Higgins, William Sellors, Jonathan P. Reid
Particle resuspension is an omnipresent source of aerosols into the environment as the necessary detachment force to return particles to the atmosphere can arise from a variety of environmental and...
{"title":"A novel approach to resuspend particles of controlled morphologies in a 3D printed wind tunnel","authors":"Edward Neal, Lukesh K. Mahato, Elin Butler, Richard J. Thomas, Maurice D. Walker, Jack C. Vincent, Simon T. Parker, Virginia E. Foot, Emily S. Kruger, Benjamin Higgins, William Sellors, Jonathan P. Reid","doi":"10.1080/02786826.2024.2390669","DOIUrl":"https://doi.org/10.1080/02786826.2024.2390669","url":null,"abstract":"Particle resuspension is an omnipresent source of aerosols into the environment as the necessary detachment force to return particles to the atmosphere can arise from a variety of environmental and...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"26 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200798","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}
Pub Date : 2024-08-23DOI: 10.1080/02786826.2024.2386109
D. Gounaris, S. Bezantakos, D. Booker, D. R. Booker, G. Biskos
The Condensation Particle Counter (CPC) is an effective instrument for measuring the number concentration of aerosol particles in different environments. With only a few exceptions, CPCs are bench ...
{"title":"Performance evaluation of the national air quality testing services V2000 Condensation Particle Counter","authors":"D. Gounaris, S. Bezantakos, D. Booker, D. R. Booker, G. Biskos","doi":"10.1080/02786826.2024.2386109","DOIUrl":"https://doi.org/10.1080/02786826.2024.2386109","url":null,"abstract":"The Condensation Particle Counter (CPC) is an effective instrument for measuring the number concentration of aerosol particles in different environments. With only a few exceptions, CPCs are bench ...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"43 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200801","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}
Pub Date : 2024-08-23DOI: 10.1080/02786826.2024.2390100
Fergus O. N. Lidstone-Lane, Eliot F. Durand, Paul I. Williams, Mark Johnson, Amanda Lea-Langton
Aircraft gas turbine engines produce Particulate Matter (PM) emissions that have been linked to human health and climate issues, leading to the introduction of regulatory sampling and measurement s...
{"title":"Experimental characterization of electrostatic loss relevant to aviation nvPM sampling","authors":"Fergus O. N. Lidstone-Lane, Eliot F. Durand, Paul I. Williams, Mark Johnson, Amanda Lea-Langton","doi":"10.1080/02786826.2024.2390100","DOIUrl":"https://doi.org/10.1080/02786826.2024.2390100","url":null,"abstract":"Aircraft gas turbine engines produce Particulate Matter (PM) emissions that have been linked to human health and climate issues, leading to the introduction of regulatory sampling and measurement s...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"5 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200800","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}
Pub Date : 2024-08-22DOI: 10.1080/02786826.2024.2389183
Masayuki Takeuchi, Yuchen Wang, Benjamin A. Nault, Yunle Chen, Manjula R. Canagaratna, Nga L. Ng
An accurate quantification of organic nitrate (RONO2) is important owing to its contribution to organic aerosol (OA) and its impacts on NOx cycling and ozone formation. Here, we calibrate and evalu...
{"title":"Evaluating the response of the Aerodyne aerosol mass spectrometer to monoterpene- and isoprene-derived organic nitrate standards","authors":"Masayuki Takeuchi, Yuchen Wang, Benjamin A. Nault, Yunle Chen, Manjula R. Canagaratna, Nga L. Ng","doi":"10.1080/02786826.2024.2389183","DOIUrl":"https://doi.org/10.1080/02786826.2024.2389183","url":null,"abstract":"An accurate quantification of organic nitrate (RONO2) is important owing to its contribution to organic aerosol (OA) and its impacts on NOx cycling and ozone formation. Here, we calibrate and evalu...","PeriodicalId":7474,"journal":{"name":"Aerosol Science and Technology","volume":"38 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200797","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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号