Article
Environmental Sciences
Adrian R. Muxworthy, Claire Lam, David Green, Alison Cowan, Barbara A. Maher, Tomasz Gonet
Summary: The study used magnetic analysis on inhalable particulate matter collected from different monitoring stations in London to identify high concentrations of magnetite particles and the presence of nanoparticles at low temperatures. Vehicle emissions were confirmed as the main source of pollutants, with meteorological events affecting the removal of larger airborne particles.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Construction & Building Technology
Hongmei Wang, Wentao Hu, Shuang Luo, Mengyao Liu, Jinrui Chen, Qizhou Chen, Changde Liu, Lan Pan
Summary: Vertical greenery systems (VGSs) have been found to effectively retain airborne particulate matter (PM), especially fine particles, improving the urban air quality. The quantity and composition of PM retained vary among different plant species. The retained PM consists of common elements from natural sources, with heavy metals possibly originating from brakes and tire wear.
BUILDING AND ENVIRONMENT
(2023)
Article
Biochemistry & Molecular Biology
Hyun-Joo Lee, Dong-Kyu Kim
Summary: This study found that PM10 exposure significantly increased the inflammatory pathway in human nasal polyp-derived fibroblasts, specifically mediated by the IL-33/ST2 pathway.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Environmental Sciences
Naof Faiz Saleem, Mahmoud Fathy ElSharkawy, Ayman M. M. Azoz
Summary: This study examines the association between airborne particulate matter (PM) concentration and hospital admissions for cardiovascular diseases (CVD) in the Eastern Region of Saudi Arabia. The results show an increased risk of cardiovascular events with higher PM concentrations, specifically with peak PM concentration occurring 6 days prior to hospital admission.
Article
Engineering, Marine
Dina P. P. Starodymova, Marina D. D. Kravchishina, Anastasia I. I. Kochenkova, Alexey S. S. Lokhov, Natalia M. M. Makhnovich, Svetlana V. V. Vazyulya
Summary: The increasing influence of Atlantic inflows in the Arctic Ocean has impacted the biogeochemical cycles of major and trace elements. The warm and salty Atlantic water affects particle transport, sink, and marine ecosystems. This study discusses the elemental composition of suspended particulate matter collected in the Barents Sea and northern Norwegian Sea, showing the spatial variability of biological processes and input of sedimentary matter. The distribution of elements in the particulate matter and their enrichment in the benthic nepheloid layer are also studied.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Lukas Brodsky, Vit Vilimek, Miroslav Sobr, Tomas Kroczek
Summary: Supraglacial lakes are important for ice dynamics and surface hydrology. This study quantifies the effect of suspended particulate matter on lake depth measurements. The results show a good relationship between water spectra and lake depth even in the presence of suspended particulate matter.
Article
Environmental Sciences
Wenwen Wang, Junyi Chen, Shuhang Wang, Wei Li
Summary: This study compares the properties and sources of SOM and SPOM in Hulun Lake, a typical lake in the cold and arid region of China. The results show that the content of SOM and SPOM is higher in the northern and western regions of the lake, and that SOM and SPOM mainly originate from terrestrial sources, closely related to climate change.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Tomasz Gonet, Barbara A. Maher, Jana Kukutschova
Summary: The study found that vehicle brake wear is the main source of airborne magnetite in the roadside environment in the UK, accounting for 68%-85%. In comparison, diesel and petrol engine emissions account for 7%-12% and 2%-4% respectively, while background dust contributes around 6%-10%. The high magnetite content in vehicle brake wear may pose potential risks to human cardiovascular and neurological health.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Pharmacology & Pharmacy
Kexin Shi, Qichuan Yin, Xiajing Tang, Xiaoning Yu, Sifan Zheng, Xingchao Shentu
Summary: This study explores the role of necroptosis in ocular surface injury caused by airborne particulate matter (PM). It was found that PM exposure may trigger cell damage through necroptosis, and the specific inhibitor Necrostatin-1 (Nec-1) reduces PM-induced cell damage and inflammation. The findings suggest that Nec-1 could be a novel therapeutic target for ocular surface disorders, particularly dry eye disease exacerbated by airborne PM pollution.
Article
Environmental Sciences
M. Kermenidou, Ll Balcells, C. Martinez-Boubeta, A. Chatziavramidis, I Konstantinidis, T. Samaras, D. Sarigiannis, K. Simeonidis
Summary: This research established a novel method of collecting quantitative data on combustion-emitted particulate matter through magnetic characterization and analysis, demonstrating varying levels of magnetically-responding particles in urban and suburban areas of Thessaloniki, Greece. The study found that Fe3O4 and similar ferrites, some of which attached to heavy metals, are the dominant magnetic contributors from anthropogenic high-temperature processes such as traffic emissions. Nasal cytologic samples collected from residents showed consistent magnetic behavior, confirming the critical role of nanosized magnetic particles in assessing air pollution threats.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Liangliang Niu, Liping Li, Chao Xing, Bin Luo, Chunchun Hu, Maomao Song, Jingping Niu, Ye Ruan, Xinghuai Sun, Yuan Lei
Summary: Studies have shown that PM2.5 exposure can induce corneal toxicity through triggering cell pyroptosis, providing novel evidence in this study.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Agricultural Engineering
Yingjie Yang, Shelley P. Kirychuk, Yuchen Si, Myra C. Martel, Huiqing Guo, Bernardo Z. Predicala, Lifeng Zhang
Summary: Animal buildings are a significant contributor to particulate matter pollution, but a laboratory-scale electrospray system has been developed to generate highly-charged nano sized water droplets called engineered water nanostructures (EWNS), which have shown effectiveness in reducing livestock particulate matter. The study found that negative voltages generated higher numbers of EWNS, and the water consumption of the developed electrospray was relatively low compared to other methods, achieving reduction efficiencies comparable to wet electrostatic scrubbers.
BIOSYSTEMS ENGINEERING
(2022)
Article
Environmental Sciences
Jihwan Kim, Jeongju Kim, Youngdo Kim, Taesik Go, Sang Joon Lee
Summary: Phytoremediation is an eco-friendly technique to reduce hazardous particulate matter in the air. This study proposes a novel methodology using digital in-line holographic microscopy to compare the electrostatic interactions between PMs and plant leaves, and quantitatively evaluate the settling velocity of PMs on different plant leaves. The findings show that the curved microstructures of hairy trichomes enhance the electric field intensity near trichomes, thus increasing the ability of plant leaves to capture PMs.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Qin Li, Danni Zheng, Yuanyuan Wang, Rong Li, Hongping Wu, Suxin Xu, Yuefan Kang, Yunxia Cao, Xiujuan Chen, Yimin Zhu, Shuguang Xu, Zi-Jiang Chen, Ping Liu, Jie Qiao
Summary: The study revealed a relationship between PM2.5 exposure and reduced human fecundity, as evidenced by longer time to pregnancy and increased odds of infertility.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Environmental Sciences
Aldo Winkler, Antonio Amoroso, Alessandro Di Giosa, Giada Marchegiani
Summary: The study compared the magnetic properties of PM10 filters collected from automated stations in Rome during and after the lockdown, revealing significant changes in magnetic parameters, indicating the impact of COVID-19 measures on airborne particulate matter. Despite no significant decrease in PM10 concentrations at urban traffic sites, there was an increase in traffic-related magnetic emissions, highlighting the importance of magnetic properties in monitoring vehicular emissions.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
C. M. Sabbir Ahmed, Yumeng Cui, Alexander L. Frie, Abigail Burr, Rohan Kamath, Jin Y. Chen, Arafat Rahman, Tara M. Nordgren, Ying-Hsuan Lin, Roya Bahreini
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Jin Y. Chen, Emmy Rodriguez, Huanhuan Jiang, Kunpeng Chen, Alexander Frie, Haofei Zhang, Roya Bahreini, Ying-Hsuan Lin
ACS EARTH AND SPACE CHEMISTRY
(2020)
Article
Engineering, Chemical
Alexander L. Frie, Roya Bahreini
Summary: Accurate retrievals of aerosol complex refractive indices are crucial for understanding the direct radiative effect of atmospheric aerosols. However, uncertainties in these retrievals are difficult to constrain due to condition-dependent and solution-dependent uncertainties. The program RICE applies a Monte Carlo-like method to propagate uncertainties in full size distribution inverse Mie method retrievals, providing confidence intervals for the real and imaginary components of the refractive index.
AEROSOL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Medicinal
C. M. Sabbir Ahmed, Biplab Chandra Paul, Yumeng Cui, Alexander L. Frie, Abigail Burr, Rohan Kamath, Jin Y. Chen, Tara M. Nordgren, Roya Bahreini, Ying-Hsuan Lin
Summary: Dimethyl selenide (DMSe) is an important volatile organoselenium compound released into the atmosphere through plant metabolism and microbial methylation. Recent studies have shown that DMSe is a precursor of secondary organic aerosol (SOA) with strong oxidizing capability towards thiol groups, potentially affecting biological pathways in human airway epithelial cells. The research highlights the regulatory role of long noncoding RNAs (lncRNAs) in altered gene expression induced by exposure to DMSe-derived SOA.
CHEMICAL RESEARCH IN TOXICOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Cheng Hu, Timothy J. Griffis, Alexander Frie, John M. Baker, Jeffrey D. Wood, Dylan B. Millet, Zhongjie Yu, Xueying Yu, Alan C. Czarnetzki
Summary: The study found that NH3 emissions in the US Corn Belt peaked in summer, with agricultural NH3 emissions showing little variation across years but exhibiting significant episodic variability influenced by meteorology and land management. Dry deposition accounted for 40% of total emissions from agricultural lands and exceeded 100% in natural lands.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yumeng Cui, Alexander L. Frie, Justin H. Dingle, Stephen Zimmerman, Isis Frausto-Vicencio, Francesca Hopkins, Roya Bahreini
Summary: This study investigated the optical properties of SOA particles derived from longifolene and 1-methylnaphthalene under different experimental conditions. The results showed that longifolene-derived aerosols were mainly scattering, while 1-methylnaphthalene SOA exhibited light-absorbing properties. High levels of NH3 and NOx enhanced the absorption of SOA, with the effect being more prominent under high humidity conditions.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Engineering, Chemical
Kunpeng Chen, Nilofar Raeofy, Michael Lum, Raphael Mayorga, Megan Woods, Roya Bahreini, Haofei Zhang, Ying-Hsuan Lin
Summary: This study compared the mass absorption coefficients of brown carbon aerosol samples measured by online and offline instruments and found that the choice of solvent had an impact on the measurement results. Methanol-extracted samples showed significant solvent effects, while using an inert solvent such as acetonitrile allowed for more accurate characterization of brown carbon properties.
AEROSOL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Raphael Mayorga, Kunpeng Chen, Nilofar Raeofy, Megan Woods, Michael Lum, Zixu Zhao, Wen Zhang, Roya Bahreini, Ying-Hsuan Lin, Haofei Zhang
Summary: This study investigated the NO3 oxidation of three nitrogen-containing heterocyclic VOCs, revealing the different effects on SOA and BrC formation. It was found that the SOA from pyrrole and 2-MP showed strong light absorption properties.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Kunpeng Chen, Raphael Mayorga, Nilofar Raeofy, Michael Lum, Megan Woods, Roya Bahreini, Haofei Zhang, Ying-Hsuan Lin
Summary: Furans are important volatile organic compounds in the atmosphere, and their oxidation can lead to the formation of secondary organic aerosols (SOAs) that contribute to brown carbon (BrC) formation. The levels of nighttime oxidants and pre-existing particles can influence the chemical composition and optical properties of SOAs and BrC. This study found that higher levels of nighttime oxidants enhance BrC light absorption, while the presence of pre-existing particles reduces it.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Engineering, Environmental
Kunpeng Chen, Raphael Mayorga, Caitlin Hamilton, Roya Bahreini, Haofei Zhang, Ying-Hsuan Lin
Summary: Carbonyl chromophores derived from nighttime oxidation of furan and pyrrole derivatives significantly contribute to light absorption in secondary BrC. The quantified N-containing carbonyl chromophores contribute to over 40% of total light absorption at specific wavelengths, highlighting their divergent importance in different spectral regions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Benjamin A. Nault, Pedro Campuzano-Jost, Douglas A. Day, Duseong S. Jo, Jason C. Schroder, Hannah M. Allen, Roya Bahreini, Huisheng Bian, Donald R. Blake, Mian Chin, Simon L. Clegg, Peter R. Colarco, John D. Crounse, Michael J. Cubison, Peter F. DeCarlo, Jack E. Dibb, Glenn S. Diskin, Alma Hodzic, Weiwei Hu, Joseph M. Katich, Michelle J. Kim, John K. Kodros, Agnieszka Kupc, Felipe D. Lopez-Hilfiker, Eloise A. Marais, Ann M. Middlebrook, J. Andrew Neuman, John B. Nowak, Brett B. Palm, Fabien Paulot, Jeffrey R. Pierce, Gregory P. Schill, Eric Scheuer, Joel A. Thornton, Kostas Tsigaridis, Paul O. Wennberg, Christina J. Williamson, Jose L. Jimenez
Summary: Observations show that the acidity of inorganic aerosols in remote areas is often higher than predicted by chemical transport models, leading to a potential underestimation of direct radiative cooling effects. Aerosol pH and ammonium balance increase with remoteness, and these differences between observations and predictions may result in underestimating direct radiative cooling effects for sulfate, nitrate, and ammonium aerosols.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
