Article
Environmental Sciences
Ying Yu, Hui Wang, Tiantian Wang, Kai Song, Tianyi Tan, Zichao Wan, Yaqin Gao, Huabin Dong, Shiyi Chen, Limin Zeng, Min Hu, Hongli Wang, Shengrong Lou, Wenfei Zhu, Song Guo
Summary: The study in Yangtze River Delta region indicates the significant impact of semi-volatile organic compounds (SVOCs) on secondary organic aerosol (SOA) formation, with a good correlation between secondary organic carbon (SOC) and odd oxygen (Ox) showing the important role of photochemical reactions in SOA formation.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Energy & Fuels
Zhuoyao He, Wenbin Zhao, Guibin Liu, Yong Qian, Xingcai Lu
Summary: Short chain aromatics such as toluene, ortho-xylene, and ethylbenzene have significant impacts on engine combustion and emissions, favoring combustion but worsening THC and CO emissions. Toluene has a greater effect on reducing particulate emissions compared to ethylbenzene and ortho-xylene, while also improving thermal efficiency under low engine speed conditions. Alkenes and aldehydes are major contributors to VOC emissions, with ethylene and formaldehyde being the primary components, respectively.
Article
Environmental Sciences
Yuan Zhang, Jingsen Fan, Kai Song, Yuanzheng Gong, Daqi Lv, Zichao Wan, Tianyu Li, Chaoyi Zhang, Sihua Lu, Shiyi Chen, Limin Zeng, Song Guo
Summary: In this study, 97 volatile organic compounds (VOCs) and 80 intermediate volatility and semi-volatile organic compounds (IVOCs and SVOCs) were measured. Alkanes and polycyclic aromatic hydrocarbons (PAHs) were found to be the main compounds of total S/IVOCs. The oxidation of VOCs and S/IVOCs contributed to the formation of secondary organic aerosol (SOA) with comparable mass.
Article
Engineering, Environmental
Yik-Sze Lau, Hon-Yin Poon, Bruce Organ, Hsiao-Chi Chuang, Man-Nin Chan, Hai Guo, Steven Sai Hang Ho, Kin-Fai Ho
Summary: Exhaust emissions from gasoline vehicles contribute significantly to air pollution in urban areas, particularly through the formation of aerosol particles. This study investigates the chemical and toxicological properties of fresh and aged particulate matter samples derived from gasoline exhaust emissions. The results show that both fresh and aged samples contain high levels of organic carbon, with n-alkane and polycyclic aromatic hydrocarbons as the dominant chemical species. Aged samples have higher amounts of oxygenated compounds and induce higher bioreactivity compared to fresh samples.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Meteorology & Atmospheric Sciences
Rongzhi Tang, Song Guo, Quanyang Lu, Kai Song, Yuanzheng Gong, Rui Tan, Kefan Liu, Hui Wang, Ying Yu, Ruizhe Shen, Shiyi Chen, Limin Zeng, Spiro D. Jorga, Allen L. Robinson
Summary: This study characterized ambient IVOCs in Beijing and conducted a comprehensive closure study of ambient SOA production using top-down and bottom-up approaches. The results showed that IVOCs were the dominant contributor to SOA formation in Beijing, and other sources like diesel vehicles and cooking emissions may also play an important role.
ATMOSPHERIC RESEARCH
(2023)
Review
Environmental Sciences
Qi Pan, Qing-Yu Liu, Jing Zheng, Yan-Hong Li, Song Xiang, Xiao-Jie Sun, Xiao-Song He
Summary: Gas emitted from landfills contains a large quantity of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs), some of which are carcinogenic, teratogenic, and mutagenic. The global hazards of VOCs and SVOCs in landfill gas to human health remain unclear. To quantify the global risk distributions of these pollutants, the composition and concentration data of VOCs and SVOCs from 72 landfills in 20 countries were collected and their human health risks were assessed. Organic compounds in landfill gas primarily result from the biodegradation of natural organic waste or the emissions and volatilization of chemical products. The respiratory system, particularly the lung, was found to be the major target organ of VOCs and SVOCs, with additional adverse health impacts ranging from headache and allergies to lung cancer. Aromatic and halogenated compounds were the primary sources of health risk, while ethyl acetate and acetone from the biodegradation of natural organic waste also exceeded the acceptable levels for human health. Overall, VOCs and SVOCs affected residents within 1,000 m of landfills. Air temperature, relative humidity, air pressure, wind direction, and wind speed were the major factors that influenced the health risks of VOCs and SVOCs. Currently, landfill risk assessments of VOCs and SVOCs are primarily based on respiratory inhalation, with health risks due to other exposure routes remaining poorly elucidated. In addition, potential health risks due to the transport and transformation of landfill gas emitted into the atmosphere should be further studied.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Engineering, Environmental
Xinyi Dong, Yaman Liu, Xiao Li, Man Yue, Yawen Liu, Zongwei Ma, Haotian Zheng, Ruqi Huang, Minghuai Wang
Summary: This study used simulations to examine the response of biogenic secondary organic aerosol (BSOA) to anthropogenic emissions in China. The results showed that sulfate (SO4) significantly promoted the formation of BSOA, while high levels of nitrogen oxides (NOx) suppressed its production. The study also predicted a slightly increased contribution of BSOA to PM2.5 in the future.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Huang Zheng, Shaofei Kong, Nan Chen, Zhenzhen Niu, Ying Zhang, Shuning Jiang, Yingying Yan, Shihua Qi
Summary: This study used the PMF model to apportion different VOC sources, revealing that industrial sources contributed most to L-OH and SOAP, while vehicle emissions had the highest contribution to OFP.
ATMOSPHERIC RESEARCH
(2021)
Article
Engineering, Environmental
Xiao-Song He, Qi Pan, Bei-Dou Xi, Jing Zheng, Qing-Yu Liu, Yue Sun
Summary: Volatile and semi-volatile organic compounds (VOCs and SVOCs) can enter leachate from landfilled wastes and require appropriate treatment before discharge. Solubility is a key factor driving the entry of VOCs and SVOCs into leachate, and different treatment processes have varying effectiveness in removing these compounds.
Review
Meteorology & Atmospheric Sciences
Li Xu, Lin Du, Narcisse T. Tsona, Maofa Ge
Summary: Anthropogenic emissions significantly impact the formation of biogenic secondary organic aerosol through changes in radical chemistry, gas-particle partitioning, and sulfuric acid formation. Effective pollutant mitigation policies are crucial in reducing the formation of biogenic SOA and improving the overall air quality.
ADVANCES IN ATMOSPHERIC SCIENCES
(2021)
Article
Environmental Sciences
Dong-Yi He, Xiao-Feng Huang, Jing Wei, Feng-Hua Wei, Bo Zhu, Li-Ming Cao, Ling-Yan He
Summary: The role of coarse particles in the atmosphere has been underestimated, but recent studies have shown that they can strongly influence clouds, ecosystems, and climate. This study focused on the formation of secondary organic aerosol (SOA) and found that oxygenated organic matter was abundant in the coarse mode. The source apportionment analysis indicated that biogenic SOA existed more in the coarse mode than in the fine mode, and the SOA in the coarse mode showed a unique correlation with biogenic volatile organic compounds (VOCs). This suggests a potential pathway of heterogeneous reactions on coarse particles that contribute to the formation of biogenic SOA and the sink of biogenic VOCs in global biogeochemical cycles.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Jingsha Xu, Roy M. Harrison, Congbo Song, Siqi Hou, Lianfang Wei, Pingqing Fu, Hong Li, Weijun Li, Zongbo Shi
Summary: The study investigated the presence of silicon-containing secondary organic aerosols in Beijing using PM2.5 samples collected during summer and winter periods. The oxidation of VMS resulted in hydrophilic polar semi-volatile and non-volatile oxidation products, contributing to the formation of secondary organic Si (SO-Si). While the average concentrations of SO-Si and Si-SOA were relatively low, they accounted for a small percentage of PM2.5 mass but increased on certain days. Net solar radiation was found to be positively correlated with SO-Si levels in summer, suggesting seasonally different formation mechanisms.
Article
Environmental Sciences
Wenzhen Li, Wenyu Ruan, Xiuqing Cui, Zuxun Lu, Dongming Wang
Summary: The study found that blood volatile organic aromatic compounds are positively associated with total and cause-specific mortality risk, which is also observed among non-smokers.
Article
Environmental Sciences
Zih-Wun Chen, Yu-Chieh Ting, Chuan-Hsiu Huang, Zih-Jhe Ciou
Summary: In the past decades, the pollution of ozone (O3) and secondary organic aerosols (SOA) in the atmosphere has raised global concerns due to their negative impacts on human health, air quality, and climate. This study conducted in Taipei, Taiwan, investigated the primary sources of volatile organic compounds (VOCs) that contribute to the formation of O3 and SOA. The results showed that different VOCs have varying reactivity and the photochemical loss of VOCs needs to be considered when evaluating the ozone formation potential (OFP) and secondary organic aerosol formation potential (SOAFP) in the atmosphere.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Zijun Zhang, Yele Sun, Jie Li
Summary: Using Gas Chromatography-Mass Spectrometry, we conducted one-year measurements of volatile organic compounds (VOCs) in a coastal city in eastern China during 2021-2022. The results showed seasonal variations in VOC concentrations, with the highest levels in winter and the lowest in autumn. Alkanes were the dominant VOCs, while aromatics contributed significantly to the formation of secondary organic aerosol (SOA). Industrial production and fuel combustion were the main sources of VOCs, especially in winter, while secondary formation was dominant in summer and autumn. VOC control faces challenges in autumn and winter due to regional transport.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Applied
Xiaotong Li, Xufei Shao, Zhisheng Wang, Jinzhu Ma, Hong He
Summary: This study successfully regulated the chemical states of Ag species by varying the loading of Ag and the particle size of alpha-Fe2O3 supports, and determined the O3 decomposition performance of different Ag species. The changes undergone by Ag species after exposure to ozone were characterized in detail, and the corresponding ozone decomposition performance of the Ag species was determined. The study provides guidance for understanding the mechanism of the interaction between metals and supports and the development of high-efficiency Ag-based catalysts.
Article
Chemistry, Multidisciplinary
Yan Zhang, Lei Zhou, Lei Zhang, Wei Luo, Wei Shen, Ming Li, Rongxing He
Summary: In this work, deep-red emitting lead-free metal-halide perovskites with high photoluminescence quantum yields (PLQYs) and outstanding stability were synthesized through a solvothermal method. The resulting Cs2ZnCl4:Sn exhibited strong deep-red photoluminescence and excellent structure stability in air, with a PLQY of 99.4% and 96% remaining after one year exposure to the atmosphere, respectively. Detailed experimental characterizations and theoretical calculations revealed that the deep-red emission originated from self-trapped excitons induced by the Sn2+ dopant, and triplet emission from Sn-5s2 orbitals was observed at low temperature.
CHINESE CHEMICAL LETTERS
(2023)
Article
Engineering, Environmental
Hong Zhang, Biwu Chu, Jun Liu, Yuan Liu, Tianzeng Chen, Qing Cao, Yonghong Wang, Peng Zhang, Qingxin Ma, Qiang Wang, Hong He
Summary: This study investigated the role of TiO2 in new particle formation (NPF) using a 1 m3 quartz smog chamber. The experimental results showed that TiO2 significantly promoted NPF by producing gaseous H2SO4. The promotion effect of TiO2 decreased gradually but partially recovered after washing with water. Furthermore, the promotion effect of TiO2 on NPF was observed regardless of differences in relative humidity (RH), with the most significant effect at an RH of 20%. Based on the experiments, the environmental impact of TiO2 on gaseous H2SO4 and particle pollution in urban areas was estimated.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Engineering, Environmental
Xiaoxuan Bai, Hezhong Tian, Chuanyong Zhu, Lining Luo, Yan Hao, Shuhan Liu, Zhihui Guo, Yunqian Lv, Dongxue Chen, Biwu Chu, Shuxiao Wang, Jiming Hao
Summary: Toxic trace elements (TEs) pose risks to ecosystems and human health, but understanding of atmospheric emission inventories for TEs is lacking. This study reviews existing research on global, regional, and sectoral scales, highlighting discrepancies in Hg emissions and source classification. Developing countries lack official emission inventories, despite numerous studies on national emissions and specific sources. Emissions from waste incineration and traffic-related sources are a growing concern. More extensive and in-depth studies are needed to establish precise emission inventories based on field measurements and investigation to reduce uncertainty.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Zhihua Lian, Mingji Zheng, Qiang Wang, Yingjie Li, Feng Deng, Wenpo Shan, Hong He
Summary: The presence of abundant hydroxyl groups on the TiO2 support facilitated the dispersion of vanadia species on V2O5/TiO2 catalysts during the ball-milling process. This resulted in a high ratio of polymeric vanadyl species and strong redox capability for the vanadia-based catalyst, leading to good NH3-SCR activity.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Environmental
Jiuhui Li, Zhengfang Wu, Hongshi He, Wenxi Lu
Summary: The grey wolf optimization algorithm (GWO) has the disadvantage of premature convergence when solving the optimization model for groundwater contamination sources (IGCSs) due to its weak local search ability. To improve it, a hybrid grey wolf gradient optimization algorithm (HGWGO) was developed by integrating GWO with the gradient descent algorithm, which showed a strong local search ability and less dependence on the initial value. The HGWGO was applied to the optimization model to enhance the accuracy of IGCSs. Additionally, a surrogate model using a deep belief neural network (DBNN) was established to participate in the iterative calculation, reducing the computational load and time consumption.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2023)
Article
Chemistry, Physical
Zhisheng Wang, Xiaotong Li, Jinzhu Ma, Hong He
Summary: In this study, NiFe layered double hydroxide (NiFe-LDH) monolithic catalysts supported by metal foam were synthesized in-situ by a simple one-step hydrothermal method and applied for ozone elimination for the first time. NiFeLDH/IF (Iron Foam, IF) monolithic catalysts were successfully prepared without the use of ammonium fluoride (NH4F), thus avoiding the generation of wastewater containing fluorine. The optimized NiFe-LDH/IF monolithic catalyst exhibited ozone conversion rates of 91.5% and 85% after 6 and 168 hours, respectively, under harsh conditions, demonstrating promising potential for ozone pollution control.
CATALYSIS COMMUNICATIONS
(2023)
Article
Environmental Sciences
Naveed Muhammad, Hongshi He, Shengwei Zong, Haibo Du, Zulqarnain Satti, Xinyuan Tan, Muhammad Yasir Qazi
Summary: Cotton plays a significant role in Pakistan's economy as the second-largest crop, but its productivity has become unstable due to climate change. This study investigates the relationship between cotton yield variability and climate factors, finding that precipitation has shown an overall decreasing trend. The results also demonstrate an increasing trend in cotton yield variability, highly correlated with climate variability. Climate factors have had a dominant impact on cotton production in the study area from 1990 to 2019.
CHINESE GEOGRAPHICAL SCIENCE
(2023)
Article
Engineering, Environmental
Qing Cao, Biwu Chu, Peng Zhang, Qingxin Ma, Jinzhu Ma, Yuan Liu, Jun Liu, Yaqi Zhao, Hong Zhang, Yonghong Wang, Hong He
Summary: The reducibility of SO2 and its acidic products inhibit the production of reactive nitrogen in the photolysis of nitrate, affecting the renoxification process. SO2 has an inhibitory effect on the production of NOx, HONO, and NH3 in the photolysis of ammonium nitrate on different substrates. The interaction between the heterogeneous oxidation of SO2 and nitrate photolysis provides a new perspective on how SO2 affects the photolysis of nitrate absorbed on photoactive oxides.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jingqi Yang, Hua Deng, Yuqin Lu, Jinzhu Ma, Wenpo Shan, Hong He
Summary: This study developed a simple and scalable method to produce catalysts through thermal annealing of Mn precursor. The obtained PdCe-MnOx catalyst, with slight addition of Ce and Pd, showed excellent O-3 removal activity in the presence of water vapor. Various characterization methods were used to explore the relationship between activity and structure.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Environmental Sciences
Chao Huang, Shun Li, Hong S. He, Yu Liang, Wenru Xu, Mia M. Wu, Zhiwei Wu, Cheng Huang, Fusheng Chen
Summary: Climate change and forest management practices have significant impacts on forest productivity and carbon budgets. Understanding their interactions is crucial for accurately predicting carbon dynamics and achieving carbon neutrality. This study developed a model-coupling framework to simulate the carbon dynamics of boreal forests in China, considering past timber harvesting and future climate change scenarios and management practices. The results show that current management strategies coupled with climate change will increase fire frequency and intensity, transforming these forests from carbon sinks to carbon sources. It suggests that future boreal forest management should focus on reducing the probability of fires and carbon losses through the use of deciduous species, mechanical removal, and controlled fires.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Junlei Zhan, Feixue Zheng, Rongfu Xie, Jun Liu, Biwu Chu, Jinzhu Ma, Donghai Xie, Xinxin Meng, Qing Huang, Hong He, Yongchun Liu
Summary: This study investigated the co-pollution of O3 and PM2.5 in Hainan Province and found that the wintertime East Asian Monsoon affects the O3 and PM2.5 pollution in winter. NOx promotes the co-pollution of O3 and PM2.5 during the pollution period, and reducing NOx can help control O3 and PM2.5 pollution.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Chenxi Li, Yuyang Li, Xiaoxiao Li, Runlong Cai, Yaxin Fan, Xiaohui Qiao, Rujing Yin, Chao Yan, Yishuo Guo, Yongchun Liu, Jun Zheng, Veli-Matti Kerminen, Markku Kulmala, Huayun Xiao, Jingkun Jiang
Summary: This study simulated new particle formation and growth in urban Beijing using a discrete-sectional model. The simulations roughly captured the evolution of observed particle size distributions, but the simulated particle growth rate was insufficient to yield the observed particle number concentrations and mode diameter. Through sensitivity analysis, under-detected oxygenated organic molecules (OOMs) were identified as a likely cause for the discrepancy.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Xiaohui Qiao, Xiaoxiao Li, Chao Yan, Nina Sarnela, Rujing Yin, Yishuo Guo, Lei Yao, Wei Nie, Dandan Huang, Zhe Wang, Federico Bianchi, Yongchun Liu, Neil M. M. Donahue, Markku Kulmala, Jingkun Jiang
Summary: This study demonstrates the usefulness of machine learning in attributing atmospheric oxygenated organic molecules (OOMs) to their precursors. The model is trained and tested using chemical indicators and applied to analyze OOMs in Beijing and a boreal forest environment in Finland.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(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)
