Article
Chemistry, Multidisciplinary
Ralph Schwidetzky, Max Lukas, Azade YazdanYar, Anna T. Kunert, Ulrich Poschl, Katrin F. Domke, Janine Frohlich-Nowoisky, Mischa Bonn, Thomas Koop, Yuki Nagata, Konrad Meister
Summary: The efficiency of bacterial ice nucleators can be profoundly influenced by ions, with strongly hydrated ions facilitating ice nucleation while weakly hydrated ions inhibiting it. Specific ion-protein interactions on the surface of bacteria play a key role in heterogeneous ice nucleation, highlighting the importance of understanding the nature of ions in this process.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Environmental Sciences
Hang Ding, Jiahui Zhang, Yuchun Wang, Mingming Hu, Jie Wen, Shanze Li, Yufei Bao, Jianwei Zhao
Summary: The construction of the reservoir has altered the processes of nitrogen migration and transformation in the river, leading to spatial differentiation of comammox bacteria. This study investigated the abundance and diversity of comammox bacteria in the sediments of three cascade reservoirs on the Lancang River in China. The results showed that comammox bacteria abundance varied spatially among reservoirs, but the variation trends of the two clades of comammox bacteria were similar within each reservoir.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Ecology
Alla Usyskin-Tonne, Yitzhak Hadar, Uri Yermiyahu, Dror Minz
Summary: Elevated CO2 stimulates plant growth and influences root exudates, affecting the microbiome. Interactions between CO2 and nitrate levels have significant effects on root-surface-associated bacterial community structure and function. Changes in bacterial abundance and gene functions may be due to alterations in root exudation patterns at elevated CO2.
Article
Ecology
K. Scarlett, S. Denman, D. R. Clark, J. Forster, E. Vanguelova, N. Brown, C. Whitby
Summary: The health of oak trees is influenced by the abundance of ammonia-oxidizing bacteria (AOB) in the soil, with a positive correlation between AOB abundance and soil pH. In contrast, there is no clear relationship between the abundance of archaea (AOA) and tree health. The ratio of soil carbon to nitrogen (C:N) is a key factor influencing denitrifier abundance, with correlations with AOB regardless of tree health.
Article
Environmental Sciences
Masaaki Kitajima, Mercedes C. Cruz, Rohan B. H. Williams, Stefan Wuertz, Andrew J. Whittle
Summary: This study analyzed microbial communities in biofilm and water samples collected from a DWDS where monochloramine is used as a residual disinfectant. The study revealed differences in microbial species and abundance in different pipe sections representing different water ages, providing novel insights into the microbial ecology of DWDS.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
P. V. Vipindas, T. Jabir, T. V. Rehitha, K. P. Krishnan
Summary: The study focused on the abundance, diversity, and niche separation of ammonia oxidizers in the surface sediment of two high Arctic fjords. The research revealed that AOA were more abundant than AOB, and the community composition of ammonia oxidizers showed spatial variations within and between the fjords, influenced by freshwater and soil influx from glacial melt.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Oceanography
Simone De Villiers Louw, David Richard Walker, Sarah E. Fawcett
Summary: Microalgae and bacteria in Antarctic sea-ice play a crucial role in polar-ocean biogeochemistry. However, the dynamics of sea-ice algae in the marginal ice zone (MIZ) are poorly understood. A study in the Indian Southern Ocean in winter 2017 found an abundant, active algal community in the MIZ, which highlighted the ecological significance of this region in supporting overwintering sea-ice algae and bacteria.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2022)
Article
Soil Science
Li-dong Shen, Jia-qi Liu, Yu-ling Yang, Ya-nan Bai, Wang-ting Yang, Mao-hui Tian, Xin Liu, Jing-hao Jin, Meng-jiao Han, Bing-jie Ren, Yi-yi Pan, Hong-sheng Wu
Summary: The use of chemical and organic fertilizers can enhance the abundance and activity of nitrite-dependent anaerobic oxidation of methane (AOM) bacteria, leading to a reduction in methane emissions from paddy ecosystems.
APPLIED SOIL ECOLOGY
(2021)
Article
Multidisciplinary Sciences
Jana Meixnerova, Joel D. Blum, Marcus W. Johnson, Eva E. Stueken, Michael A. Kipp, Ariel D. Anbar, Roger Buick
Summary: Multiple transient episodes of oxygenation occurred in Earth's early atmosphere before the Great Oxidation Event 2.4 billion years ago. Research suggests that the whiff of O-2 was preceded by subaerial volcanism, leading to temporary accumulation of oxygen. These events were triggered by diminished volcanic O-2 sinks and enhanced nutrient supply to the ocean from weathering of volcanic rocks.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Microbiology
Xiao-Yu Cheng, Xiao-Yan Liu, Hong-Mei Wang, Chun-Tian Su, Rui Zhao, Paul L. E. Bodelier, Wei-Qi Wang, Li-Yuan Ma, Xiao-Lu Lu
Summary: The study highlighted the dominance of the high-affinity upland soil cluster (USC) in atmospheric methane-oxidizing bacteria (atmMOB) communities in karst caves, and identified key taxa in the cooccurrence networks of both atmMOB and total bacterial communities. Positive links overwhelmingly dominated the cooccurrence networks, indicating a consistent response to environmental disturbances by methanotrophs and total bacterial communities in karst caves. The research provides new insights into the diversity and abundances of atmMOB and total bacterial communities in subterranean karst caves, supporting the notion of karst caves as methane sinks.
MICROBIOLOGY SPECTRUM
(2021)
Article
Ecology
Chunlei Chen, Lieyu Tian, Yan Sheng, Rui Wang, Jingjing Li, Dongdong Zhang, Chunfang Zhang
Summary: The study identified a variety of anammox bacteria in Xiangshan Bay sediments, including five known genera. The abundance and diversity of anammox bacteria are influenced by factors such as salinity, dissolved oxygen, and temperature.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Microbiology
Jumei Liu, Jingjing Han, Chunwu Zhu, Weiwei Cao, Ying Luo, Meng Zhang, Shaohua Zhang, Zhongjun Jia, Ruihong Yu, Ji Zhao, Zhihua Bao
Summary: The study found that increased atmospheric CO2 levels and nitrogen fertilization have different effects on root-associated nitrogen-fixing bacterial communities at different growth stages of rice. Elevated CO2 levels can increase the abundance of nifH in rice roots and rhizosphere soils, while nitrogen fertilization may alter the relative abundance and community structure of diazotrophic bacteria.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Ecology
Samuel E. Jordan, Kyle A. Palmquist, Ingrid C. Burke, William K. Lauenroth
Summary: Livestock grazing is a globally important land use that can significantly influence plant community structure and function. This study found that grazing intensity negatively affected total vegetation cover and grass cover, while positively affecting annual forb cover, exotic cover, and exotic richness. However, grazing intensity did not have a significant impact on species richness and composition, bunchgrass biomass, shrub density and size, and percentage cover of bare ground, litter, and biological soil crusts.
ECOLOGICAL APPLICATIONS
(2022)
Article
Environmental Sciences
Dongdan Yuan, Chaochen Fu, Lei Zheng, Qiuyang Tan, Xue Wang, Yuzi Xing, Haoming Wu, Qi Tian
Summary: This study examined the abundance and community features of comammox bacteria, ammonia-oxidizing archaea (AOA), and ammonia-oxidizing bacteria (AOB) in wetland sediments of western China plateaus. The results showed that comammox bacteria were more abundant than AOA and AOB and dominated the nitrification process. Elevation was found to be a key factor influencing the community of comammox bacteria, with higher elevations leading to increased abundance.
ENVIRONMENTAL RESEARCH
(2023)
Article
Microbiology
Emily Pope, Bradley Haltli, Russell G. Kerr, Ali Ahmadi
Summary: Microencapsulation of bacteria is a promising cultivation technique for previously unculturable microbial species. Lowering the encapsulation temperature and adding nutrients significantly improve the viability and metabolic activity of marine bacteria. Therefore, the use of low-gelling-temperature agarose with supplemental nutrients is recommended for encapsulating marine bacteria obtained from temperate habitats.
Article
Environmental Sciences
Nan Xu, Min Hu, Zirui Zhang, Xiao Li, Shuya Hu, Jingchuan Chen, Zijing Zhang, Rongzhi Tang, Limin Zeng, Feng Chen, Zhifan Jin, Fang Yang, Haowu Lin, Jinsheng Chen, Yanting Chen, Mengren Li, Ronghua Zheng, Chung-Te Lee, Sheng-Hsiang Wang, Chia-Wei Lee, Chung-Shin Yuan, Chang-Tang Chang, Ken-Hui Chang, Yuanhang Zhang
Summary: Although there is increasing attention on particulate air pollution in the Taiwan Strait, there have been few studies focusing on the organic component of the pollution. This study conducted synchronous observations in Taiwan and Fujian to explore the chemical properties and sources of organic aerosols in the Taiwan Strait. The results showed that the organic constituents in the Taiwan Strait had relatively lower proportions of n-alkanes and PAHs, indicating less primary source contribution and more secondary formation influence. Cooking and vehicle emissions were found to be the main sources of organic carbon across the Taiwan Strait, followed by biomass burning and vegetative detritus. The contribution of biomass burning increased significantly when a large number of fire points were observed. The study highlights the chemical characteristics of organic aerosols in the Taiwan Strait and provides valuable information for pollution control policies.
ATMOSPHERIC POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Wenshuai Li, Yuxuan Qi, Wen Qu, Wenjun Qu, Jinhui Shi, Daizhou Zhang, Yingchen Liu, Feng Wu, Yuanyuan Ma, Yanjing Zhang, Danyang Ren, Xueqing Du, Shishi Yang, Xinfeng Wang, Li Yi, Xiaomei Gao, Wencai Wang, Yingge Ma, Lifang Sheng, Yang Zhou
Summary: This study investigates the effects of sulfate and nitrate formed on dust aerosols on particles' physicochemical properties. Three dust reverse-transport (DRT) events were identified in Qingdao, China, and the secondary sulfate and nitrate in PM2.5 were estimated. Factors such as heterogeneous reactions, photochemical conversions, and precursors' abundance in dust plumes were found to affect the aging of dust plumes. Efficient sulfate and nitrate formation was observed during DRT events to the south of Qingdao under appropriate atmospheric conditions, while minimal growth was observed during DRT events to the north of Qingdao with low relative humidity and low [NH4+]/[SO42-] ratio. This study reveals a mechanism for efficient sulfate and nitrate formation in dust plumes in the continental atmosphere.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Engineering, Chemical
Dongjie Shang, Min Hu, Lizi Tang, Xin Fang, Ying Liu, Yusheng Wu, Zhuofei Du, Xuhui Cai, Zhijun Wu, Shengrong Lou, Mattias Hallquist, Song Guo, Yuanhang Zhang
Summary: A one-month comprehensive measurement was conducted in Beijing during the summer of 2016 to deepen the understanding of how polluted new particle formation (NPF) events occur. The study found that clean NPF events were caused by local nucleation and growth, while polluted NPF events were influenced by both local nucleation-growth and regional transport. The contributions of these factors to particle number concentration were 60% and 40% respectively.
Article
Engineering, Chemical
Feng Wu, Na Song, Tafeng Hu, Steven Sai Hang Ho, Junji Cao, Daizhou Zhang
Summary: Desert dust strongly impacts climate and environment by changing radiation balance, participating in atmospheric chemical reactions, and affecting biogeochemical cycle. This study establishes a laboratory system to generate dust particles simulating natural wind erosion processes and compares them with field dust, finding consistent trends in particle size distribution and chemical composition.
Article
Environmental Sciences
Zirui Zhang, Wenfei Zhu, Min Hu, Hui Wang, Lizi Tang, Shuya Hu, Ruizhe Shen, Ying Yu, Kai Song, Rui Tan, Zheng Chen, Shiyi Chen, Francesco Canonaco, Andre S. H. Prevot, Song Guo
Summary: Researchers quantified the secondary organic aerosols (SOA) produced by urban-lifestyle sources under real atmospheric conditions through a combination of laboratory simulation and field observation. They found that vehicle emissions were the dominant source of SOA formation during daytime photochemical processes, and the SOA:POA ratio of vehicle emissions was about 1.4 times larger than that of cooking emissions. These findings not only provide a new approach to quantify urban SOA, but also validate laboratory hypotheses and contribute to understanding the ambient contributions, chemical characteristics, and environmental effects of urban-lifestyle SOA.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jingchuan Chen, Zhijun Wu, Xiangxinyue Meng, Cuiqi Zhang, Jie Chen, Yanting Qiu, Li Chen, Xin Fang, Yuanyuan Wang, Yinxiao Zhang, Shiyi Chen, Jian Gao, Weijun Li, Min Hu
Summary: This study investigated the ice nucleation properties of Asian dust and found that anthropogenic pollution does not significantly change the ice nucleation activity (INA) of Asian dust.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yanan Wang, Yang Guan, Jinhui Shi, Huiwang Gao, Xiaohong Yao, Daizhou Zhang
Summary: This study collected 211 sample pairs of PM2.5 and total suspended particles (TSP) in Qingdao, China, and compared the soluble phosphorus (P) contents in different size fractions using water and seawater extraction. The results showed that the solubility of aerosol P quantified with water extraction was approximately 20% higher than that with seawater extraction.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Feng Xiaolei, Shao Longyi, Tim Jones, Li Yaowei, Zhang Mengyuan, Ge Shuoyi, Cao Yaxin, Kelly Berube, Zhang Daizhou
Summary: It is predicted that climate change trends will lead to more frequent and severe dust storms in northern China, affecting the environment and human respiratory health. A severe dust storm occurred in Beijing from March 15th to 20th, 2021, and the collected airborne particles were analyzed. The analysis revealed changes in particle composition, size distribution, and pollution levels during different stages of the dust storm.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Yanting Qiu, Zhijun Wu, Ruiqi Man, Taomou Zong, Yuechen Liu, Xiangxinyue Meng, Jingchuan Chen, Shiyi Chen, Suxia Yang, Bin Yuan, Mijung Song, Changhyuk Kim, Junyoung Ahn, Limin Zeng, Jiyi Lee, Min Hu
Summary: This study aimed to understand haze formation in East Asia during winter by measuring the aerosol composition in Beijing and Seoul. The results showed similar pollution situations, with nitrate dominating the inorganic components in both cities. The study emphasized the importance of local secondary aerosol formation for atmospheric PM pollution in East Asian megacities.
ATMOSPHERIC ENVIRONMENT
(2023)
Letter
Geosciences, Multidisciplinary
Xin Wang, Chunyu Zhang, Tenglong Shi, Daizhou Zhang, Pusheng Zhao, Peng Zhao
Summary: Using a computer-controlled scanning electron microscope software called IntelliSEM-EPAS (TM), we measured the size-resolved concentration of soot, dust, and fly ash particles in fresh and aged snow samples collected in an industrial city in China. Wet scavenging by snow was found to absorb 69.7% and 30.3% of soot and dust particles at a 550 nm wavelength, respectively, leading to a decrease in snow albedo. The size of soot particles increased slightly during dry deposition, while mineral dust particles did not show significant changes in size.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Yujue Wang, Zeyu Feng, Qi Yuan, Dongjie Shang, Yuan Fang, Song Guo, Zhijun Wu, Chao Zhang, Yang Gao, Xiaohong Yao, Huiwang Gao, Min Hu
Summary: This study conducted a comparative investigation to illustrate the sources and key environmental factors of WSOC formation under different atmospheric conditions. The results obtained from five field campaigns at different inland sites and a coastal site during different seasons were summarized. The formation of WSOC was influenced by atmospheric oxidants, aerosol liquid water, and ambient relative humidity, with their roles varying in different atmospheres.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Meteorology & Atmospheric Sciences
Zhen Mu, Yuling Ma, Hanxuan Wen, Chunyu Zhang, Yulin Qi, Daizhou Zhang, Yue Zhou, Wei Pu, Xin Wang
Summary: This study investigated the molecular compositions, potential sources, and degrees of oxidation of dissolved organic matter in seasonal snow (DOMsnow) in northeastern China. The majority of identified molecular formulas were consistent with terrestrial compounds from underlying soil and atmospheric deposition. Microbe-derived compounds also made significant contributions to the DOMsnow pool. The heterogeneous distribution of DOMsnow molecules was influenced by factors such as sulfate ions, organic aerosols, longitude, and altitude. High levels of oxidation indicated the presence of secondary organic matter and aging processes within the snowpack.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Lizi Tang, Min Hu, Dongjie Shang, Xin Fang, Jianjiong Mao, Wanyun Xu, Jiacheng Zhou, Weixiong Zhao, Yaru Wang, Chong Zhang, Yingjie Zhang, Jianlin Hu, Limin Zeng, Chunxiang Ye, Song Guo, Zhijun Wu
Summary: This study conducted intensive measurements at Nam Co station on the Tibetan Plateau and found that new particle formation events were frequent during the summer monsoon season, mostly driven by organic involvement in the nucleation process. The occurrence of new particle formation events was limited during the pre-monsoon season compared to the monsoon season. These results emphasize the importance of considering the seasonal effect of new particle formation when simulating aerosol and cloud condensation nuclei quantities in the high-altitude atmosphere.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Yan Zheng, Ruqian Miao, Qi Zhang, Yaowei Li, Xi Cheng, Keren Liao, Theodore K. Koenig, Yanli Ge, Lizi Tang, Dongjie Shang, Min Hu, Shiyi Chen, Qi Chen
Summary: The chemical differences between submicron (PM1) and fine particles (PM2.5) contribute to different adverse health effects, emphasizing the need for understanding their size-resolved composition. Extensive online measurements in Beijing across seasons revealed that traffic- and cooking-related organic aerosols (OA) accounted for 20%-30% of PM2.5 OA mass, with insignificant variations throughout the year. Secondary OA factors contributed 59%-73% of PM2.5 OA mass. The mass distributions of particulate components varied greatly between PM1 and PM2.5 and across seasons. Heterogeneous uptake and aqueous processing played important roles in distributing secondary organic aerosols in the supermicron mode in polluted areas.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geosciences, Multidisciplinary
Y. C. Liu, Z. J. Wu, Y. T. Qiu, P. Tian, Q. Liu, Y. Chen, M. Song, M. Hu
Summary: This study explores the relationship between the mass fraction of inorganic compounds and the liquid-phase-transition threshold relative humidity (RHthreshold) in urban aerosol particles. The results reveal a negative correlation between RHthreshold and the mass fraction of nitrate, suggesting that higher nitrate content leads to a lower RHthreshold. Furthermore, it is observed that an increased nitrate fraction allows particles to exist in a liquid state at lower RH, potentially playing a significant role in the formation of secondary aerosols through multiphase reactions.
GEOPHYSICAL RESEARCH LETTERS
(2023)
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)