Article
Environmental Sciences
Ravi Yadav, Gufran Beig, Vrinda Anand, Ritesh Kalbande, Sujit Maji
Summary: The study found significant seasonal variations in the mixing ratios of isoprene, benzene, and toluene in urban areas of India, influenced by meteorological parameters. Isoprene mainly originates from urban vegetation emissions, with higher concentrations in the pre-monsoon months, while benzene and toluene are mainly impacted by transport from the polluted Indo-Gangetic Plain, with higher concentrations in winter.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Rebecca Tanzer-Gruener, Pavithra Ethi Rajan, Liam D. Dugan, Mark E. Bier, Allen L. Robinson, Albert A. Presto
Summary: This study measured the emissions of volatile organic compounds from water-based and oil-based paints. The results showed that oil-based paints had higher emissions compared to water-based paints, while the emissions were similar among low-gloss interior paints. Interior paints primarily emitted VOCs, while exterior paints emitted more IVOCs. Extended emission tests revealed that most emissions occurred within 12-24 hours after paint application.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Daniele Zatta, Mattia Segata, Franco Biasioli, Ottaviano Allegretti, Giovanna Bochicchio, Roberto Verucchi, Francesco Chiavarini, Luca Cappellin
Summary: This study reviews three main degradation methods for volatile organic compounds (VOCs) and explores their application in cooking processes. Through experimental comparison of activated carbon, photocatalysis, and a synergetic system, it is demonstrated that a combined approach can mitigate the drawbacks of photocatalysis. This is of great significance for limiting VOC emissions.
Article
Chemistry, Physical
Jian-Rong Li, Wan-Peng Zhang, Chang Li, Chi He
Summary: In this study, Mn-Cu bimetallic oxides with high catalytic activity were facilely prepared by a hydrothermal-redox method for toluene oxidation. The control of Cu/Mn molar ratio was found to tune the lattice defect and oxygen vacancy concentration in the prepared materials. Among them, spinel structured MnCu0.5 exhibited the highest catalytic activity and durability at 210 degrees C.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jian-Rong Li, Wan-Peng Zhang, Chang Li, Hang Xiao, Chi He
Summary: In this study, a series of Mn-Cu bimetallic oxide catalysts were prepared by one-step hydrothermal-redox method for catalytic total oxidation of toluene. The MnCu spinel structured catalyst exhibited excellent low-temperature catalytic activity, superior durability, and water resistance, with a reaction rate 7.0 times higher than that of MnCu0.5 at 210 ?C. The cyclic redox process with enough oxygen vacancy played a vital role in toluene oxidation.
APPLIED SURFACE SCIENCE
(2021)
Article
Biochemical Research Methods
Y. Lan Pham, Olaf Holz, Jonathan Beauchamp
Summary: The first and most crucial step in breath research is adequate sampling, which plays a pivotal role in quality assurance of breath datasets. This study investigated emissions and uptake by three interface components, namely a silicon facemask, a reusable 3D-printed mouthpiece adapter, and a pulmonary function test filter compatible with the commercial Respiration Collector for In-Vitro Analysis (ReCIVA) breath sampling device. The filter exhibited the lowest overall emissions compared to the mask or adapter, which both had equivalently high emissions (albeit for different compounds). Treatment of the materials reduced the total VOC emissions by 62% in the mask, 89% in the filter and 99% in the adapter. Uptakes of compounds were lowest for the adapter and most pronounced in the mask. Knowledge of emissions and/or uptake by sampling components is key to reducing the likelihood of erroneous data interpretation, ultimately expediting progress in the field of breath test development.
JOURNAL OF BREATH RESEARCH
(2023)
Article
Environmental Sciences
Aondongu Alexander Tyovenda, Tyoyima John Ayua, Terver Sombo
Summary: An analytical solution derived from the Gaussian approach was used to estimate gaseous pollutant concentrations emitted from an industrial stack in northwestern Nigeria, with model results compared to experimental data. The study recommended emission control strategies such as complete combustion or industrial gas absorbers to reduce CO and NO2 levels for environmental and biological benefits.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Yik-Sze Lau, Man-Nin Chan, Hon-Yin Poon, Yan Tan, Shun-Cheng Lee, Jianjun Li, Kin-Fai Ho
Summary: The study investigated the photooxidation reaction of toluene in a PAM OFR and analyzed the gas-phase products and particle changes using PTR-MS and SMPS. The results identified key gas-phase reaction products of toluene and detected second generation products, with minimal effects of OH exposure and RH on product composition. Off-line analysis of SOA samples revealed the presence of various diacids, including some compounds not previously identified in toluene photooxidation experiments.
Article
Multidisciplinary Sciences
Yuxiang Zhang, Haixu Bo, Zhe Jiang, Yu Wang, Yunfei Fu, Bingwei Cao, Xuewen Wang, Jiaqi Chen, Rui Li
Summary: The reduction in emissions due to COVID-19 lockdowns in early 2020 in Chinese mainland led to a decrease in NO2, while changes in meteorology caused an increase in NO2 levels. Human activity, especially intra-city migration, was found to have a significant impact on the emission-induced reduction of NO2 in major cities in Chinese mainland.
NATIONAL SCIENCE REVIEW
(2021)
Article
Chemistry, Analytical
Qiangling Zhang, Xun Bao, Qu Liang, Qin Sun, Wei Xu, Xue Zou, Chaoqun Huang, Chengyin Shen, Yannan Chu
Summary: A novel DC-ion funnel drift tube has been developed for proton transfer reaction mass spectrometry (PTR-MS), which exhibits higher sensitivity compared to traditional drift tubes. The DC-ion funnel drift tube achieves ion focusing using only a DC electric field and is suitable for miniaturization and low power consumption.
ANALYTICAL CHEMISTRY
(2022)
Article
Construction & Building Technology
Xiaosu Ding, Hongbo Lu, Jinglin Jiang, Antonios Tasoglou, Amisha D. Shah, Nusrat Jung
Summary: This study evaluates the real-time performance of a photoionization detector (PID) in sensing indoor volatile organic compound (VOC) mixtures during building disinfection events. The results show that PIDs can successfully identify VOC emission events during the application of disinfectants and may be suitable for integration with building automation systems. However, compared to the state-of-the-art proton transfer reaction time-of-flight mass spectrometer (PTR-TOF-MS), the PID has a lower response, indicating that it is not efficiently detecting many components of the emitted VOC mixtures. Furthermore, detailed correlation analysis between the PID and PTR-TOF-MS responses can improve the reliability of PIDs in estimating VOC concentrations through the application of product-specific correction factors.
BUILDING AND ENVIRONMENT
(2023)
Article
Meteorology & Atmospheric Sciences
R. Ciuraru, J. Kammer, C. Decuq, M. Vojkovic, K. Haider, Y. Carpentier, F. Lafouge, C. Berger, M. Bourdat-Deschamps, I. K. Ortega, F. Levavasseur, S. Houot, B. Loubet, D. Petitprez, C. Focsa
Summary: This study reveals that sewage sludge used as fertilizer is an unaccounted source of nucleation precursors, with high emission and nucleation rates. The emissions may have significant impacts on local and regional air quality during the spreading period, contributing to the understanding of aerosol balance in the atmosphere.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Johan Fagerlund, Ron Zevenhoven, Jorgen Thomassen, Marius Tednes, Farhang Abdollahi, Laurent Thomas, Claus Jorgen Nielsen, Tomas Mikoviny, Armin Wisthaler, Liang Zhu, Chet Biliyok, Andrey Zhurkin
Summary: This paper presents the results and data of Fortum Oslo Varme AS's pilot plant construction in their waste to energy plant in Klemetsrud, Oslo, Norway. The pilot plant campaign successfully demonstrated low amine emissions and provided important data on absorbent degradation and other performance parameters.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Environmental Sciences
Baptiste Marques, Evangelia Kostenidou, Alvaro Martinez Valiente, Boris Vansevenant, Thibaud Sarica, Ludovic Fine, Brice Temime-Roussel, Patrick Tassel, Pascal Perret, Yao Liu, Karine Sartelet, Corinne Ferronato, Barbara D'Anna
Summary: This study characterizes the volatile organic compounds (VOCs) emitted from vehicle exhaust, revealing the emission characteristics under different driving conditions. Gasoline direct injection (GDI) vehicles have the highest emissions during urban and highway driving, while diesel vehicles are dominated by oxygenated compounds and aliphatic hydrocarbons. The emissions of gasoline vehicles mainly consist of monoaromatics and alkanes. A detailed characterization of vehicular emissions enriches the current emission inventories.
Article
Environmental Sciences
Guilherme Dantas, Iuri Gorne, Cleyton Martins da Silva, Graciela Arbilla
Summary: The study revealed higher BTEX concentrations and poorer air quality in the northern region of Rio de Janeiro. Both Iraja and Jardim Primavera areas had total BTEX concentrations above typical values reported for diesel and gasoline emissions.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Federico Bianchi, Victoria A. Sinclair, Diego Aliaga, Qiaozhi Zha, Wiebke Scholz, Cheng Wu, Liine Heikkinen, Rob Modini, Eva Partoll, Fernando Velarde, Isabel Moreno, Yvette Gramlich, Wei Huang, Alkuin Maximilian Koenig, Markus Leiminger, Joonas Enroth, Otso Perakyla, Angela Marinoni, Chen Xuemeng, Luis Blacutt, Ricardo Forno, Rene Gutierrez, Patrick Ginot, Gaelle Uzu, Maria Cristina Facchini, Stefania Gilardoni, Martin Gysel-Beer, Runlong Cai, Tuukka Petaja, Matteo Rinaldi, Harald Saathoff, Karine Sellegri, Douglas Worsnop, Paulo Artaxo, Armin Hansel, Markku Kulmala, Alfred Wiedensohler, Paolo Laj, Radovan Krejci, Samara Carbone, Marcos Andrade, Claudia Mohr
Summary: This paper presents an introduction to the Southern Hemisphere High Altitude Experiment on Particle Nucleation and Growth (SALTENA). The research highlights from the campaign include the characterization of chemical species, the process of new particle formation, and the identification of long-range-transported compounds. The results underscore the importance of comprehensive observations in high-altitude locations in the undersampled Southern Hemisphere.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2022)
Article
Engineering, Chemical
B. Rorup, W. Scholz, L. Dada, M. Leiminger, R. Baalbaki, A. Hansel, J. Kangasluoma, H. E. Manninen, G. Steiner, J. Vanhanen, M. Kulmala, K. Lehtipalo
Summary: Accurately measuring aerosol particles smaller than 3 nm in diameter is crucial. Calibration of particle counters using metal or salt particles may not always represent field conditions accurately. This study calibrated a particle counter using beta-caryophyllene oxidation products and compared it to calibration with tungsten oxide. It was found that the detection efficiency for organic particles was lower than for inorganic particles.
JOURNAL OF AEROSOL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Mingyi Wang, Mao Xiao, Barbara Bertozzi, Guillaume Marie, Birte Rorup, Benjamin Schulze, Roman Bardakov, Xu-Cheng He, Jiali Shen, Wiebke Scholz, Ruby Marten, Lubna Dada, Rima Baalbaki, Brandon Lopez, Houssni Lamkaddam, Hanna E. Manninen, Antonio Amorim, Farnoush Ataei, Pia Bogert, Zoe Brasseur, Lucia Caudillo, Louis-Philippe De Menezes, Jonathan Duplissy, Annica M. L. Ekman, Henning Finkenzeller, Loic Gonzalez Carracedo, Manuel Granzin, Roberto Guida, Martin Heinritzi, Victoria Hofbauer, Kristina Hohler, Kimmo Korhonen, Jordan E. Krechmer, Andreas Kuerten, Katrianne Lehtipalo, Naser G. A. Mahfouz, Vladimir Makhmutov, Dario Massabo, Serge Mathot, Roy L. Mauldin, Bernhard Mentler, Tatjana Muller, Antti Onnela, Tuukka Petaja, Maxim Philippov, Ana A. Piedehierro, Andrea Pozzer, Ananth Ranjithkumar, Meredith Schervish, Siegfried Schobesberger, Mario Simon, Yuri Stozhkov, Antonio Tome, Nsikanabasi Silas Umo, Franziska Vogel, Robert Wagner, Dongyu S. Wang, Stefan K. Weber, Andre Welti, Yusheng Wu, Marcel Zauner-Wieczorek, Mikko Sipila, Paul M. Winkler, Armin Hansel, Urs Baltensperger, Markku Kulmala, Richard C. Flagan, Joachim Curtius, Ilona Riipinen, Hamish Gordon, Jos Lelieveld, Imad El-Haddad, Rainer Volkamer, Douglas R. Worsnop, Theodoros Christoudias, Jasper Kirkby, Ottmar Moehler, Neil M. Donahue
Summary: This article investigates the importance of new particle formation in the upper free troposphere on the global cloud condensation nuclei. The study finds that nitric acid, sulfuric acid, and ammonia synergistically form particles at rates much faster than any two of the three components. The study also reveals that co-condensation of ammonia and nitric acid alone can drive the rapid growth of particles to cloud condensation nuclei sizes with trace amounts of sulfate. Additionally, the study shows that these cloud condensation nuclei are highly efficient ice nucleating particles.
Review
Chemistry, Analytical
Helen Haug, Luise Klein, Tilman Sauerwald, Birte Poelke, Jonathan Beauchamp, Alexander Roloff
Summary: This review presents different sampling approaches for determining VOC emissions from consumer products, discussing the advantages and disadvantages of each method in terms of time and cost efficiency, as well as their suitability for realistically assessing VOC inhalation exposures.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Jiali Shen, Wiebke Scholz, Xu-Cheng He, Putian Zhou, Guillaume Marie, Mingyi Wang, Ruby Marten, Mihnea Surdu, Birte Rorup, Rima Baalbaki, Antonio Amorim, Farnoush Ataei, David M. Bell, Barbara Bertozzi, Zoe Brasseur, Lucia Caudillo, Dexian Chen, Biwu Chu, Lubna Dada, Jonathan Duplissy, Henning Finkenzeller, Manuel Granzin, Roberto Guida, Martin Heinritzi, Victoria Hofbauer, Siddharth Iyer, Deniz Kemppainen, Weimeng Kong, Jordan E. Krechmer, Andreas Kuerten, Houssni Lamkaddam, Chuan Ping Lee, Brandon Lopez, Naser G. A. Mahfouz, Hanna E. Manninen, Dario Massabo, Roy L. Mauldin, Bernhard Mentler, Tatjana Mueller, Joschka Pfeifer, Maxim Philippov, Ana A. Piedehierro, Pontus Roldin, Siegfried Schobesberger, Mario Simon, Dominik Stolzenburg, Yee Jun Tham, Antonio Tome, Nsikanabasi Silas Umo, Dongyu Wang, Yonghong Wang, Stefan K. Weber, Andre Welti, Robin Wollesen de Jonge, Yusheng Wu, Marcel Zauner-Wieczorek, Felix Zust, Urs Baltensperger, Joachim Curtius, Richard C. Flagan, Armin Hansel, Ottmar Moehler, Tuukka Petaja, Rainer Volkamer, Markku Kulmala, Katrianne Lehtipalo, Matti Rissanen, Jasper Kirkby, Imad El-Haddad, Federico Bianchi, Mikko Sipila, Neil M. Donahue, Douglas R. Worsnop
Summary: This study demonstrates that gas-phase MSA production increases with decreasing temperature and the updated DMS oxidation mechanism reveals higher MSA yields than previously predicted. The impact of NOx is found to be less significant compared to temperature.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Editorial Material
Biochemical Research Methods
Makoto Sawano, Jonathan Beauchamp
JOURNAL OF BREATH RESEARCH
(2023)
Article
Chemistry, Medicinal
Y. Lan Pham, Wojciech Wojnowski, Jonathan Beauchamp
CHEMICAL RESEARCH IN TOXICOLOGY
(2023)
Article
Biochemical Research Methods
Y. Lan Pham, Olaf Holz, Jonathan Beauchamp
Summary: The first and most crucial step in breath research is adequate sampling, which plays a pivotal role in quality assurance of breath datasets. This study investigated emissions and uptake by three interface components, namely a silicon facemask, a reusable 3D-printed mouthpiece adapter, and a pulmonary function test filter compatible with the commercial Respiration Collector for In-Vitro Analysis (ReCIVA) breath sampling device. The filter exhibited the lowest overall emissions compared to the mask or adapter, which both had equivalently high emissions (albeit for different compounds). Treatment of the materials reduced the total VOC emissions by 62% in the mask, 89% in the filter and 99% in the adapter. Uptakes of compounds were lowest for the adapter and most pronounced in the mask. Knowledge of emissions and/or uptake by sampling components is key to reducing the likelihood of erroneous data interpretation, ultimately expediting progress in the field of breath test development.
JOURNAL OF BREATH RESEARCH
(2023)
Article
Biochemical Research Methods
Y. Lan Pham, Ruyi Yu, Jonathan Beauchamp
Summary: The Peppermint Experiment aims to address the lack of comparability in breath biomarker studies by analyzing the washout profiles of peppermint oil constituents in exhaled breath. The experiment involves measuring samples from a group of volunteers using three different analytical platforms. The results show variable washout profiles within and between individuals, indicating differences in absorption, distribution, and metabolism of the constituents. However, the low variability between instruments suggests that discrepancies in benchmark values reported in the literature are mostly due to biological variability rather than method or platform performance.
JOURNAL OF BREATH RESEARCH
(2023)
Article
Biochemical Research Methods
Jonathan D. Beauchamp, Chris A. Mayhew
Summary: This article examines the evidence for the effectiveness of face masks in reducing the transmission of respiratory viruses, specifically SARS-CoV-2, and weighs the benefits against the associated negative impacts. Despite the lack of statistically significant or clear scientific evidence to support mandatory mask wearing, the physical, psychological, and social harms, as well as the environmental impact, need to be considered. The authors argue that the mandatory use of face masks in the general population is unjustifiable and should be abandoned in future pandemic countermeasures policies.
JOURNAL OF BREATH RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Jasper Kirkby, Antonio Amorim, Urs Baltensperger, Kenneth S. Carslaw, Theodoros Christoudias, Joachim Curtius, Neil M. Donahue, Imad El Haddad, Richard C. Flagan, Hamish Gordon, Armin Hansel, Hartwig Harder, Heikki Junninen, Markku Kulmala, Andreas Kuerten, Ari Laaksonen, Katrianne Lehtipalo, Jos Lelieveld, Ottmar Moehler, Ilona Riipinen, Frank Stratmann, Antonio Tome, Annele Virtanen, Rainer Volkamer, Paul M. Winkler, Douglas R. Worsnop
Summary: Aerosol particles have significant impacts on public health and climate. The understanding of atmospheric new particle formation has been improved through laboratory measurements at the CERN CLOUD chamber. The study reveals the roles of sulfuric acid, condensable vapours, and stabilizers in new particle formation and provides insights for air quality and climate models.
Article
Environmental Sciences
Wiebke Scholz, Bernhard Mentler, Lukas Fischer, Torsten Berndt, Armin Hansel
Summary: In this study, we characterized the new Innsbruck wall-free impinging jets reactor (INNpinJeR) and compared its performance with the TROPOS free jet flow system. The results showed that the INNpinJeR can be used to study gas-phase chemistry under atmospherically relevant conditions with good reproducibility.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2022)
Article
Environmental Sciences
Ruby Marten, Mao Xiao, Birte Rorup, Mingyi Wang, Weimeng Kong, Xu-Cheng He, Dominik Stolzenburg, Joschka Pfeifer, Guillaume Marie, Dongyu S. Wang, Wiebke Scholz, Andrea Baccarini, Chuan Ping Lee, Antonio Amorim, Rima Baalbaki, David M. Bell, Barbara Bertozzi, Lucia Caudillo, Biwu Chu, Lubna Dada, Jonathan Duplissy, Henning Finkenzeller, Loic Gonzalez Carracedo, Manuel Granzin, Armin Hansel, Martin Heinritzi, Victoria Hofbauer, Deniz Kemppainen, Andreas Kurten, Markus Lampimaki, Katrianne Lehtipalo, Vladimir Makhmutov, Hanna E. Manninen, Bernhard Mentler, Tuukka Petaja, Maxim Philippov, Jiali Shen, Mario Simon, Yuri Stozhkov, Antonio Tome, Andrea C. Wagner, Yonghong Wang, Stefan K. Weber, Yusheng Wu, Marcel Zauner-Wieczorek, Joachim Curtius, Markku Kulmala, Ottmar Mohler, Rainer Volkamer, Paul M. Winkler, Douglas R. Worsnop, Josef Dommen, Richard C. Flagan, Jasper Kirkby, Neil M. Donahue, Houssni Lamkaddam, Urs Baltensperger, Imad El Haddad
Summary: Intense new particle formation events are observed under high pollution conditions. The experiments conducted at CERN's CLOUD chamber show that higher concentrations of pre-existing particles can decrease the rate of new particle formation, indicating efficient scavenging of molecular clusters by larger particles.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2022)
Article
Meteorology & Atmospheric Sciences
Markus Leiminger, Lukas Fischer, Sophia Brilke, Julian Resch, Paul Martin Winkler, Armin Hansel, Gerhard Steiner
Summary: We present an electrical mobility classifier for mass-mobility measurements of atmospheric ions, achieving higher transmission efficiency and sizing resolution to segregate natural ions.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2022)
Article
Environmental Sciences
Dalrin Ampritta Amaladhasan, Claudia Heyn, Christopher R. Hoyle, Imad El Haddad, Miriam Elser, Simone M. Pieber, Jay G. Slowik, Antonio Amorim, Jonathan Duplissy, Sebastian Ehrhart, Vladimir Makhmutov, Ugo Molteni, Matti Rissanen, Yuri Stozhkov, Robert Wagner, Armin Hansel, Jasper Kirkby, Neil M. Donahue, Rainer Volkamer, Urs Baltensperger, Martin Gysel-Beer, Andreas Zuend
Summary: This study characterizes the hygroscopic growth behavior and effects of inorganic seed particles on the formation of secondary organic aerosols (SOAs) from the dark ozone-initiated oxidation of isoprene at low NOx conditions. The simulations predict different SOA concentrations based on the presence of seed particles and relative humidity levels. The measurements show an increase in SOA amounts at higher relative humidity levels compared to lower levels. The presence of an aqueous inorganic seed enhances the SOA yield regardless of the seed type.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Muhammad Waqas, Majid Nazeer, Man Sing Wong, Wu Shaolin, Li Hon, Joon Heo
Summary: The socio-economic restriction measures implemented in the United States have significantly reduced nitrogen dioxide (NO2) emissions. The study highlights the impact of factors such as human mobility, population density, income, climate, and stationary sources on the reduction of NO2 at different stations. The research emphasizes the scientific impacts of the NO2 reduction and income inequality revealed by the pandemic on air quality and health disparities.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Guorui Zhi, Jinhong Du, Aizhong Chen, Wenjing Jin, Na Ying, Zhihui Huang, Peng Xu, Di Wang, Jinghua Ma, Yuzhe Zhang, Jiabao Qu, Hao Zhang, Li Yang, Zhanyun Ma, Yanjun Ren, Hongyan Dang, Jianglong Cui, Pengchuan Lin, Zhuoshi He, Jinmin Zhao, Shuo Qi, Weiqi Zhang, Wenjuan Zhao, Yingxin Li, Qian Liu, Chen Zhao, Yi Tang, Peng Wei, Jingxu Wang, Zhen Song, Yao Kong, Xiangzhe Zhu, Yi Shen, Tianning Zhang, Yangxi Chu, Xinmin Zhang, Jiafeng Fu, Qingxian Gao, Jingnan Hu, Zhigang Xue
Summary: An comprehensive emission inventory for China in 2019, which includes both air pollutants and greenhouse gases, was developed in this study. The inventory utilizes existing frameworks and data to provide comparable emissions data and demonstrates the relationship between emissions and economic development.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
I-Ting Ku, Yong Zhou, Arsineh Hecobian, Katherine Benedict, Brent Buck, Emily Lachenmayer, Bryan Terry, Morgan Frazier, Jie Zhang, Da Pan, Lena Low, Amy Sullivan, Jeffrey L. Collett Jr
Summary: Unconventional oil and natural gas development (UOGD) in the United States has expanded rapidly in recent decades, raising concerns about its impact on air quality. This study conducted extensive air monitoring during the development of several large well pads in Broomfield, Colorado, providing a unique opportunity to examine changes in local air toxics and VOC concentrations during well drilling and completions and production. The study identified significant increases in VOC concentrations during drilling operations, highlighting the importance of emissions from synthetic drilling mud. The findings suggest opportunities to mitigate emissions during UOGD operations.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Puji Lestari, Akbar R. Tasrifani, Wiranda I. Suri, Martin J. Wooster, Mark J. Grosvenor, Yusuke Fujii, Vissia Ardiyani, Elisa Carboni, Gareth Thomas
Summary: This study developed field emission factors for various pollutants in peatland fires and estimated the total emissions. Gas samples were collected using an analyzer, while particulate samples were collected using air samplers. The study found significant emissions of CO2, CO, PM2.5, carbon aerosols, water-soluble ions, and elements from the fires in Central Kalimantan, Indonesia in 2019.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Ligang Li, Yuyu Chen, Lu Fan, Dong Sun, Hu He, Yongshou Dai, Yong Wan, Fangfang Chen
Summary: A high-precision retrieval method based on a deep convolutional neural network and satellite remote sensing data is proposed to obtain accurate methane vertical profiles.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Hyung Joo Lee, Toshihiro Kuwayama, Michael Fitzgibbon
Summary: This study investigated the changes in nitrogen dioxide (NO2) air pollution levels and their disparities in California, U.S. during the pandemic of coronavirus disease 2019 (COVID-19). The results showed a decrease in NO2 concentrations, especially in urban and high-traffic areas. However, socially vulnerable populations still experienced higher levels of NO2 exposure. The study suggests that reducing NO2 disparities, particularly racial inequity, can be achieved through continued regulatory actions targeting traffic-related NOx emissions.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Maria Chiara Pietrogrande, Beatrice Biffi, Cristina Colombi, Eleonora Cuccia, Umberto Dal Santo, Luisa Romanato
Summary: This study investigates the chemical composition and oxidative potential of PM10 particles in the Po Valley, Italy, and demonstrates the impact of high levels of atmosphere ammonia. The rural area had significantly higher ammonia concentrations compared to the urban site, resulting in higher levels of secondary inorganic aerosol. Although the SIA components did not contribute significantly to the PM10 oxidative reactivity, they were correlated with the oxidative potential measurements. This suggests that the contribution of SIA to PM oxidative toxicity cannot be ignored.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Natalie Allen, Jan Gacnik, Sarrah M. Dunham-Cheatham, Mae Sexauer Gustin
Summary: Accurate measurement of atmospheric reactive mercury is challenging due to its reactivity and low concentrations. The University of Nevada, Reno Reactive Mercury Active System (RMAS) has been shown to be more accurate than the industry standard, but has limitations including long time resolution and sampling biases. Increasing the sampling flow rate negatively affected RM concentrations, but did not impact the chemical composition of RM captured on membranes.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Chin-Yu Hsu, Wei-Ting Hsu, Ching-Yi Mou, Pei-Yi Wong, Chih-Da Wu, Yu-Cheng Chen
Summary: This study estimated the daily exposure concentrations of PM2.5 for elderly individuals residing in different regions of Taiwan using land use regression with machine learning (LUR_ML) and microenvironmental exposure (ME) models. The accuracy of the models varied across regions, with the ME models exhibiting higher predictions and lower biases. The use of region-specific microenvironmental measurements in the ME model showed potential for accurate prediction of personal PM2.5 exposure.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xiaohan Si, Kerrie Mengersen, Chuchu Ye, Wenbiao Hu
Summary: This study found that there is an interactive effect between air pollutants and weather factors, which significantly affects influenza transmission. Future research should consider the interactive effects between pollutants and temperature or humidity to evaluate the environment-influenza association.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Luxi Xu, Ruijun Xu, Yunshao Ye, Rui Wang, Jing Wei, Chunxiang Shi, Qiaoxuan Lin, Ziquan Lv, Suli Huang, Qi Tian, Yuewei Liu
Summary: This study aimed to evaluate the impact of ambient air pollution on hospital admissions for angina. The results showed that exposure to ambient particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide, and ozone are associated with an increased risk of hospital admissions for angina. The association with nitrogen dioxide exposure was found to be the strongest.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xinyu Yu, Man Sing Wong, Majid Nazeer, Zhengqiang Li, Coco Yin Tung Kwok
Summary: This study proposes a novel method to address the challenge of missing values in satellite-derived AOD products and creates a comprehensive daily AOD dataset for the Guangdong-Hong Kong-Macao Greater Bay Area. By reconstructing missing values and developing a new model, the derived dataset outperforms existing products and agrees well with ground-based observations. Additionally, the dataset exhibits consistent temporal patterns and more spatial details.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Yidan Zhang, Yifan Xu, Bo Peng, Wu Chen, Xiaoyu Cui, Tianle Zhang, Xi Chen, Yuan Yao, Mingjin Wang, Junyi Liu, Mei Zheng, Tong Zhu
Summary: This study developed a sensitive method to measure the metallic components of atmospheric fine particulate matter (PM2.5) and compared the results with different analysis methods. The concentrations of metallic components in personal PM2.5 samples were found to be significantly different from corresponding fixed-site samples. Personal sampling can reduce exposure misclassifications, and measuring metallic components is useful for exploring health risks and identifying sources of PM2.5.
ATMOSPHERIC ENVIRONMENT
(2024)
Review
Environmental Sciences
Jamie Leonard, Lea Ann El Rassi, Mona Abdul Samad, Samantha Prehn, Sanjay K. Mohanty
Summary: Increasing concentrations of microplastics in the Earth's atmosphere could have adverse effects on ecosystems and human health. The deposition rate of airborne microplastics is influenced by both land use and climate, and a global analysis suggests that climate may have a greater impact on the concentration and deposition rate of microplastics than land use.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Tian Zhou, Xiaowen Zhou, Zining Yang, Carmen Cordoba-Jabonero, Yufei Wang, Zhongwei Huang, Pengbo Da, Qiju Luo, Zhijuan Zhang, Jinsen Shi, Jianrong Bi, Hocine Alikhodja
Summary: This study investigated the long-range transport and effects of North African and Middle Eastern dust in East Asia using lidar observations and model simulations. The results showed that the dust originated from multiple sources and had a long transport time. The vertical distribution of the dust was found to be crucial for assessing its impacts.
ATMOSPHERIC ENVIRONMENT
(2024)