Article
Environmental Sciences
In Ho Song, Jong Sung Park, Seung Myung Park, Dae Gon Kim, Young Woo Kim, Hye Jung Shin
Summary: The study found that the concentration of aerosols in Seoul metropolitan area varies by season, with organic aerosols being dominant and the Ox concentration in summer being proportional to temperature. Carboxylic acid production was identified as an important process for organic aerosol generation in spring, fall, and winter.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Engineering, Environmental
Jiumeng Liu, Emma L. D'Ambro, Ben Hwan Lee, Siegfried Schobesberger, David M. Bell, Rahul A. Zaveri, Alla Zelenyuk, Joel A. Thornton, John E. Shilling
Summary: Monoterpene photooxidation plays an important role in the formation of secondary organic aerosols (SOA), and this study investigates the factors influencing SOA yield from alpha-pinene and Delta-3-carene photooxidation. The results show that oxidation conditions, addition of NO, and the molecular structure of volatile organic compounds (VOCs) can all affect SOA formation. The study also reveals that the composition of the photooxidation products and the SOA yield differ between alpha-pinene and Delta-3-carene.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Hyun Gu Kang, Youngjin Kim, Sonya Collier, Qi Zhang, Hwajin Kim
Summary: This study measured the volatility of submicron ambient organic aerosol in Seoul in 2019 and compared it with reference data used in air quality models, revealing a significant discrepancy between the two. The results suggest the need for modeling studies to investigate the impact of this discrepancy on model outcomes, and highlight the importance of addressing limitations caused by wall losses and incomplete modeling parameters in chamber experiments aiming to determine volatility basis sets.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Chengrui Liang, Shuxiao Wang, Ruolan Hu, Guanghan Huang, Jinzi Xie, Bin Zhao, Yuyang Li, Wenfei Zhu, Song Guo, Jingkun Jiang, Jiming Hao
Summary: This study investigates the formation and aging of secondary organic aerosol (SOA) in winter Beijing. It finds that urban cooking and fossil fuel burning are significant sources of SOA, with cooking SOA produced through photooxidation and aqueous-phase processing, and less oxidized SOA resulting from photooxidation of fossil fuel burning OA and subsequent aqueous-phase aging.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Mackenzie B. Humes, Mingyi Wang, Sunhye Kim, Jo E. Machesky, Drew R. Gentner, Allen L. Robinson, Neil M. Donahue, Albert A. Presto
Summary: The study finds that aromatic compounds are the main contributors to secondary organic aerosol (SOA) formation from volatile chemical products (VCPs), while ether and ester functional groups hinder the autoxidation process. Therefore, reducing the use of oxygenated aromatic compounds in VCPs may help decrease the generation of SOA in urban areas.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Christopher D. Zangmeister, James G. Radney, Kurt D. Benkstein, Berc Kalanyan
Summary: This study demonstrates that commonly used consumer products release nanometer-sized plastic particles when exposed to water. The number of particles released depends on the initial water temperature and the type of material. Food grade nylon released 7 times more particles than single-use beverage cups in hot water. On a particle number density basis, the particles released into water from a single hot beverage cup equate to one particle for every seven cells in the human body in a size range available for cellular uptake.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Dae-Young Kim, Benjamin de Foy, Hwajin Kim
Summary: This study investigated the sources and formation processes of particulate matter (PM1) and black carbon (BC) in Seoul during late winter using high-resolution time-of-flight aerosol mass spectrometry and positive matrix factorization analysis. The results showed that secondary aerosols had higher contributions than primary aerosols, indicating the importance of secondary aerosol formation over primary aerosol emissions. Haze episodes in Seoul occurred in two stages, with different patterns of sulfur oxidation ratio, nitrogen oxidation ratio, and meteorological conditions. The findings suggest that winter air quality in Seoul is influenced by complex processes, including emissions, transport, and meteorological conditions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Kenneth S. Docherty, Robert Yaga, William T. Preston, Mohammed Jaoui, Theran P. Reidel, John H. Offenberg, Tadeusz E. Kleindienst, Michael Lewandowski
Summary: The experiments showed that oxidation of n-alkanes generates secondary organic aerosol with varying compositions and contributions from different species. Additionally, the study found that the yield and composition of SOA are sensitive to water vapor concentrations, with the impact being most significant within a specific humidity range.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Yuqing Jiang, Ling Wang, Minggang Zheng, Yongfeng Lin, Aifeng Liu, Yawei Wang, Ying Li
Summary: The concentrations of TBBPA derivatives and byproducts in sediment, soil, and water samples collected from a river in a brominated flame retardant manufacturing zone were determined. Various TBBPA derivatives and byproducts were detected in all samples, with concentrations ranging from none detection to 1.1 x 104 ng/g dw. Additionally, unknown bromobisphenol A allyl ether analogs were confirmed in the samples, which might be produced during the waste treatment process of factories. The transformation pathways of TBBPA derivatives were revealed, and the occurrence of transformation products in the environment was observed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Shuyu He, Ying Liu, Mengdi Song, Xin Li, Sihua Lu, Tianzeng Chen, Yujing Mu, Shengrong Lou, Xiaodi Shi, Xinghua Qiu, Tong Zhu, Yuanhang Zhang
Summary: This study investigated the oxidation process of aromatic hydrocarbons in the atmosphere and discovered the dominant pathway and new product distribution. The observed results provide important clues for understanding the chemical transformation of organic pollutants in the atmosphere.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Quanfu He, Chunlin Li, Kyla Siemens, Ana C. Morales, Anusha Priyadarshani Silva Hettiyadura, Alexander Laskin, Yinon Rudich
Summary: The chemical composition of secondary organic aerosols (SOAs) and their optical properties were investigated in this study. The results showed that the composition of SOAs affects their ability to absorb solar radiation, with nitroaromatic compounds playing a significant role in the light absorption of SOAs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Karl M. Seltzer, Elyse Pennington, Venkatesh Rao, Benjamin N. Murphy, Madeleine Strum, Kristin K. Isaacs, Havala O. T. Pye
Summary: Volatile chemical products (VCPs) are a significant source of anthropogenic organic emissions in the United States. The VCPy framework accurately predicts national organic emissions from VCPs and highlights the importance of VCPs as a source of secondary pollution in urban environments.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(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
Chemistry, Physical
Amit Kumar, Chandra Bhushan Kumar, D. B. Lata
Summary: The utilization of hydrogen as a secondary fuel along with tri-ethylene glycol mono methyl ether (TGME) as a fuel additive in diesel demonstrated improved engine performance and reduced emissions. The addition of hydrogen enhanced brake thermal efficiency, with the highest efficiency observed at load conditions of 30-35% hydrogen. The inclusion of TGME further improved thermal efficiency and reduced ignition delay, resulting in optimum performance and emissions at 30% load with 25% hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Ashutosh Kumar Shukla, Sachchida Nand Tripathi, Francesco Canonaco, Vipul Lalchandani, Ravi Sahu, Deepchandra Srivastava, Jay Dave, Navaneeth Meena Thamban, Sreenivas Gaddamidi, Lokesh Sahu, Mayank Kumar, Vikram Singh, Neeraj Rastogi
Summary: Delhi's post-monsoon and winter haze affects visibility, health, and daily routines. To design effective pollution control strategies, it is important to understand the sources of particulate matter (PM2.5). This study used double-PMF analysis to identify various sources of PM2.5, such as road dust, traffic, secondary nitrate, secondary sulfate, oxidized organic aerosol, biomass burning, industrial emissions, and fireworks.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Engineering, Environmental
David R. Weise, Heejung Jung, Javier Palarea-Albaladejo, David R. Cocker
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2020)
Article
Chemistry, Multidisciplinary
Jia Jiang, William P. L. Carter, David R. Cocker, Kelley C. Barsanti
ACS EARTH AND SPACE CHEMISTRY
(2020)
Article
Environmental Sciences
Yu Jiang, Jiacheng Yang, Yi Tan, Seungju Yoon, Hung-Li Chang, John Collins, Hector Maldonado, Mark Carlock, Nigel Clark, David McKain, David Cocker III, Georgios Karavalakis, Kent C. Johnson, Thomas D. Durbin
Summary: The study suggests that an on-board diagnostics (OBD)-based Inspection and Maintenance (I/M) program for heavy-duty vehicles (HDVs) can significantly reduce nitrogen oxides (NOx) emissions and opacity levels, providing tangible emission benefits for diesel HDVs.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Paul Van Rooy, Kathleen L. Purvis-Roberts, Philip J. Silva, Matthew J. Nee, David Cocker
Summary: This study investigated the oxidation mechanism and aerosol forming potential of DMS and DMDS under dry conditions in an environmental chamber. Results showed that with relatively low initial NOx concentrations, O(3P) dominated the oxidation of reduced sulfur precursor and resulted in aerosol mass yields of greater than 40%.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Paul Van Rooy, Ryan Drover, Tanner Cress, Cara Michael, Kathleen L. Purvis-Roberts, Philip J. Silva, Matthew J. Nee, David Cocker
Summary: The study investigates the mechanisms and factors influencing the formation of particulate MSA through oxidation experiments on dimethylsulfide and dimethyldisulfide. Results show that substantial water vapor and the presence of NOx are essential for MSA formation, with nitrate radical oxidation potentially playing a significant role in ambient MSA levels. Further research is needed to better understand the impacts of reduced sulfur compounds on health and climate.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Niina Kuittinen, Cavan McCaffery, Weihan Peng, Stephen Zimmerman, Patrick Roth, Pauli Simonen, Panu Karjalainen, Jorma Keskinen, David R. Cocker, Thomas D. Durbin, Topi Ronkko, Roya Bahreini, Georgios Karavalakis
Summary: The study found that emissions of primary particles from a vehicle equipped with a gasoline direct injection engine were largely dependent on cold-start conditions and acceleration events. Secondary organic aerosol (SOA) formation showed strong correlation with SOA precursor emissions, and more SOA was formed during congested, slow speed, and braking events on highways.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Studies
Chengguo Li, Poornima Dixit, Bill Welch, Abhilash Nigam, Bonnie Soriano, John Lee, Robert L. Russell, Yu Jiang, Hanwei Zhu, Georgios Karavalakis, Kent C. Johnson, David R. Cocker, Thomas D. Durbin, J. Wayne Miller
Summary: This paper reviews the history and emissions from a range of technologies introduced in recent years to reduce emissions from yard tractors, with the understanding that various technology solutions may be used by ports worldwide to address air pollution concerns.
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT
(2021)
Article
Engineering, Environmental
Weihan Peng, Chen Le, William C. Porter, David R. Cocker
Summary: Current chemical transport models typically use a constant secondary organic aerosol (SOA) yield to represent SOA formation from aromatic compounds under low NOx conditions. However, this study finds a wide range of SOA yields from m-xylene under low NOx conditions, and identifies the chamber HO2/RO2 ratio as a key factor explaining the variability in SOA yield. The RO2 + RO2 pathway shows a lower potential for SOA formation compared to the RO2 + HO2 pathway. It is important to consider both pathways in conducting chamber experiments to obtain accurate SOA yield curves.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Energy & Fuels
Jiacheng Yang, Tianbo Tang, Yu Jiang, Georgios Karavalakis, Thomas D. Durbin, J. Wayne Miller, David R. Cocker, Kent C. Johnson
Summary: This study assessed the real-world gaseous and particulate emissions for a wet scrubber retrofit to an existing container ocean-going vessel. The results showed that while the scrubber had a high removal efficiency of sulfur dioxide emissions, its removal efficiency for particulate matter emissions was low.
Article
Environmental Sciences
Trevor A. Biddle, Qi Li, Mia R. Maltz, Purvi N. Tandel, Rajrupa Chakraborty, Keziyah Yisrael, Ryan Drover, David R. Cocker, David D. Lo
Summary: Exposure to aerosolized Salton Sea water in mice led to a unique inflammation-associated response characterized by B cell recruitment, while the relationship to asthma remains to be explored. Comparatively, exposure to Pacific Ocean aerosols induced some B cell recruitment but without an inflammatory gene expression profile.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Sahar Ghadimi, Hanwei Zhu, Thomas D. Durbin, David R. Cocker, Georgios Karavalakis
Summary: This manuscript assesses tailpipe emissions and secondary aerosol formation from two heavy-duty diesel vehicles with different aftertreatment systems. The results show that using hydrogenated vegetable oil (HVO) instead of ultra-low sulfur diesel (ULSD) can reduce nitrogen oxide and particulate matter emissions. Furthermore, vehicles without selective catalytic reduction systems have twice the amount of secondary aerosol formation when using ULSD compared to HVO.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Weihan Peng, Cavan McCaffery, Niina Kuittinen, Topi Ronkko, David R. Cocker, Georgios Karavalakis
Summary: This study investigated the primary emissions and secondary aerosol formation from a gasoline direct injection (GDI) passenger car under different driving conditions. The results showed higher emissions and formation of secondary organic aerosols during cold-start cycles. The total mass of secondary aerosols exceeded primary particle emissions and was mainly composed of inorganic aerosols.
Article
Environmental Sciences
Trevor A. Biddle, Keziyah Yisrael, Ryan Drover, Qi Li, Mia R. Maltz, Talyssa M. Topacio, Jasmine Yu, Diana Del Castillo, Daniel Gonzales, Hannah L. Freund, Mark P. Swenson, Malia L. Shapiro, Jon K. Botthoff, Emma Aronson, David R. Cocker III, David D. Lo
Summary: Residents near the Salton Sea in southern California have a high incidence of asthma. Dust from the Salton Sea triggers lung inflammation in mice, resembling acute innate immune responses. This highlights the health risks of exposure to dust emissions from drying terminal lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Qi Li, Jia Jiang, Isaac K. Afreh, Kelley C. Barsanti, David R. Cocker
Summary: This study investigates the oxidation of camphene and the formation of secondary organic aerosol (SOA). Experimental and modeling results show that the presence of nitrogen oxides (NOx) can enhance the SOA mass yield. Moreover, the study reveals the effects of NOx concentration and initial camphene concentration on the SOA formation process.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Sophia M. Charan, Yuanlong Huang, Reina S. Buenconsejo, Qi Li, David R. Cocker, John H. Seinfeld
Summary: Decamethylcyclopentasiloxane (D5) is a chemical compound commonly used in personal care products. Its concentration outdoors and indoors is correlated to population density. The formation of secondary organic aerosol (SOA) from the oxidation of D5 is highly dependent on the concentration or exposure of hydroxyl radicals (OH).
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)