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Science Bulletin 2024年第7期69卷 978-987页

作者：吴礼彬王芃张强任红 Zongbo Shi 胡伟陈静谢巧蓉李林杰越思瑶韦莲芳宋琳琳张永根王子涵陈爽韦琬王小曼章炎麟孔少飞葛宝珠杨婷方运霆任露洁邓君俊孙业乐王自发张宏亮胡建林刘丛强 Roy M.Harrison Qi Ying 傅平青 Institute of Surface-Earth System Science School of Earth System ScienceTianjin UniversityTianjin 300072China Department of Atmospheric and Oceanic Sciences Fudan UniversityShanghai 200438China IRDR ICoE on Risk Interconnectivity and Governance on Weather/Climate Extremes Impact and Public Health Fudan UniversityShanghai 200438China Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China Air Environmental Modeling and Pollution Controlling Key Laboratory of Sichuan Higher Education Institute Chengdu University of Information TechnologyChengdu 610225China Division of Environmental Health&Risk Management School of GeographyEarth&Environmental SciencesUniversity of BirminghamBirmingham B152TTUK School of Environmental Science and Engineering Tianjin UniversityTianjin 300072China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110164China Yale-NUIST Center on Atmospheric Environment International Joint Laboratory on Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjing 210044China Department of Atmospheric Sciences School of Environmental Studies and Department of Environmental Science and TechnologySchool of Environmental StudiesChina University of GeosciencesWuhan 430074China Department of Environmental Science and Engineering Fudan UniversityShanghai 200438China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing University of Information Science and TechnologyNanjing 210044China Department of Environmental Sciences/Center of Excellence in Environmental Studies King Abdulaziz UniversityJeddah 21589Saudi Arabia Zachr

Aerosol ammonium(NH_(4)^(+)),mainly produced from the reactions of ammonia(NH_(3))with acids in the atmosphere,has significant impacts on air pollution,radiative forcing,and human *** the source and formation mechanism of NH_(4)^(+)can provide scientific insights into air quality ***,the sources of NH_(3)in urban areas are not well understood,and few studies focus on NH_(3)/NH_(4)^(+)at different heights within the atmospheric boundary layer,which hinders a comprehensive understanding of aerosol NH_(4)^(+).In this study,we perform both field observation and modeling studies(the Community Multiscale Air quality,CMAQ)to investigate regional NH_(3)emission sources and vertically resolved NH_(4)^(+)formation mechanisms during the winter in *** stable nitrogen isotope analyses and CMAQ model suggest that combustion-related NH_(3)emissions,including fossil fuel sources,NH_(3)slip,and biomass burning,are important sources of aerosol NH_(4)^(+)with more than 60%contribution occurring on heavily polluted *** contrast,volatilization-related NH_(3)sources(livestock breeding,N-fertilizer application,and human waste)are dominant on clean ***-related NH_(3)is mostly local from Beijing,and biomass burning is likely an important NH_(3)source(~15%–20%)that was previously *** effective control strategies such as the two-product(e.g.,reducing both SO_(2)and NH_(3))control policy should be considered to improve air quality.

关键词： Particulate ammonium Nitrogen isotope PM2.5 The Community Multiscale Air quality(CMAQ) control policy

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Lifetime Investigation of Particulate and Gaseous Emissions for Typical Residential Coal Combustion

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SSRN 2024年

作者： Li, Siyuan Liu, Dantong Jiang, Xiaotong Tian, Ping Sheng, Jiujiang Wu, Yangzhou Hu, Kang Bi, Kai Li, Ruijie Zhao, Delong Huang, Mengyu Kong, Shaofei Zheng, Chenghang Department of Atmospheric Sciences School of Earth Sciences Zhejiang University Hangzhou310058 China Zhejiang University China Beijing Weather Modification Center Beijing100089 China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology College of Environment Science and Engineering Guilin University of Technology Guilin541004 China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing University of Information Science & Technology 219 Ningliu Road Nanjing210044 China Department of Atmospheric Sciences School of Environmental Studies China University of Geosciences Wuhan430074 China StateKey Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control Zhejiang University Hangzhou310027 China

Residential coal combustion still contributes to half of the heating energy consumption in many developing countries. The dynamic variation during combustion lifetime importantly determines the combustion facility design and appropriate air quality assessment, which however was omitted in conventional studies. This study online investigated the emissions of particulate and gaseous pollutants during combustion lifetime for typical coal types. During the first pyrolysis stage with temperature climbing, the organic aerosols (OA) and gases reached peak concentration. The second fierce combustion stage had the highest temperature and produced the highest accumulative emissions, particularly a substantial amount of black carbon for coals with more volatile content. The future application using higher-quality coals will undoubtedly reduce the emission of PM, such as by a factor of 10 from bituminous to anthracite coal. However, more ultrafine particles (d © 2024, The Authors. All rights reserved.

关键词： Energy utilization

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Toxic effect of chronic exposure to polyethylene nano/microplastics on oxidative stress, neurotoxicity and gut microbiota of adult zebrafish (Danio rerio)

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Chemosphere 2023年第1期339卷 139774页

作者： Li, Ruixuan Nie, Jingjing Qiu, Denggao Li, Shuangshuang Sun, Yingxue Wang, Chun State Environmental Protection Key Laboratory of Food Chain Pollution Control School of Ecology and Environment Beijing Technology and Business University Beijing100048 China Yunnan Ecological Environmental Emergency Investigation and Complaint Center Kunming650034 China Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province Fisheries Research Institute of Fujian Xiamen361000 China College of Energy and Environmental Engineering Hebei University of Engineering Handan056038 China

The rapid development of aquaculture industry has provided a large amount of high-quality animal protein, while the food safety caused by microplastics and nanoplastics (MP/NPs) has become a major concern. In addition, recent evidence has shown the potential toxic effect of PE-MP/NPs, highlighting the need for further research into their environmental and health impacts. Chronic exposure of polyethylene microplastics (PE-MPs) and nanoplastics (PE-NPs) on adult zebrafish were conducted in the present study for 21 d. Organ-dependent oxidative damage induced by MP/NPs was observed. Insignificant differences in neurotoxicity and dysbiosis of gut microbiota were found between MPs and NPs. Changes in glutathione S-transferase (GST), glutathione (GSH), catalase (CAT), lipid peroxidation (LPO), and superoxide dismutase (SOD) showed that MP/NPs induced oxidative damage in gill and intestinal cells of zebrafish. The inhibited AChE activity suggested the potential neurotoxicity of microplastics and nanoplastics (MP/NPs). In addition, chronic exposure increased the alpha-diversity of intestinal microbiota. At the phylum level, the average relative abundance of Proteobacteria increased from 29.73% (control group) to 66.10% (microplastics), 54.84% (nanoplastics) and 60.03% (combined exposure), respectively. Tenericutes decreased from 55.43% (control group) to 20.02% (microplastics), 22.44% (nanoplastics) and 31.77% (combined exposure), respectively. Overall, this study provides new insights and objective evidence for the toxicity assessment of PE-MPs. © 2023 Elsevier Ltd

关键词： Oxidative stress

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Mapping anthropogenic emissions in China at 1 km spatial resolution and its application in air quality modeling

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Science Bulletin 2021年第6期66卷 612-620,M0004页

作者： Bo Zheng Jing Cheng Guannan Geng Xin Wang Meng Li Qinren Shi Ji Qi Yu Lei Qiang Zhang Kebin He Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China China National Environmental Monitoring Center Beijing 100012China Center for Environmental Risk and Damage Assessment Chinese Academy of Environmental PlanningBeijing 100012China Center for Regional Air Quality Simulation and Control Chinese Academy of Environmental PlanningBeijing 100012China

New challenges are emerging in fine-scale air quality modeling in China due to a lack of high-resolution emission ***,only a few emission sources have accurate geographic locations(point sources),while a large part of sources,including industrial plants,are estimated as provincial totals(area sources)and spatially disaggregated onto grid cells based on proxies;this approach is reasonable to some extent but is highly questionable at fine spatial ***,we compile a new comprehensive point source database that includes nearly 100,000 industrial facilities in *** couple it with the frame of Multi-resolution Emission Inventory for China(MEIC),estimate point source emissions,combine point and area sources,and finally map China’s anthropogenic emissions of 2013 at the spatial resolution of 30’’*30’’(~1 km).Consequently,the percentages of point source emissions in the total emissions increase from less than 30%in the MEIC up to a maximum of 84%for SO_(2)in *** new point source-based emission maps show the uncoupled distribution of emissions and populations in space at fine spatial scales,however,such a pattern cannot be reproduced by any spatial proxy used in the conventional emissions *** new accurate high-resolution emission mapping approach reduces the modeled biases of air pollutant concentrations in the densely populated areas compared to the raw MEIC inventory,thus improving the assessment of population exposure.

关键词： Anthropogenic emission inventory High-resolution mapping Air quality modeling

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A Convolutional Neural Network Prediction Model for Aviation Nitrogen Oxides Emissions Throughout All Flight Phases

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SSRN 2024年

作者： Chen, Longfei Zhang, Qian Zhu, Meiyin Li, Guangze Chang, Liuyong Xu, Zheng Zhang, Hefeng Wang, Yanjun Zheng, Yinger Zhong, Shenghui Pan, Kang Zhao, Yiwei Gao, Mengyun Zhongfa Aviation Institute of Beihang University Yuhang District Hangzhou311115 China School of Energy and Power Engineering Beihang University Beijing100191 China State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China Beijing101300 China Vehicle Emission Control Center of Ministry of Ecology and Environment Chinese Research Academy of Environmental Sciences Beijing100012 China

In recent years, there has been an increasing amount of research on nitrogen oxides (NOx) emissions, and the environmental impact of aviation NOx emissions at cruising altitudes has received widespread attention. NOx may play a crucial role in altering the composition of the atmosphere, particularly regarding ozone formation in the upper troposphere. At present, the ground emission database based on the landing and takeoff (LTO) cycle is more comprehensive, while high-altitude emission data is scarce due to the prohibitively high cost and the inevitable measurement uncertainty associated with in-flight sampling. Therefore, it is necessary to establish a comprehensive NOx emission database for the entire flight envelope, encompassing both ground and cruise phases. This will enable a thorough assessment of the impact of aviation NOx emissions on climate and air quality. In this study, a prediction model has been developed via convolutional neural network (CNN) technology. This model can predict the ground and cruise NOx emission index for turbofan engines and mixed turbofan engines fueled by either conventional aviation kerosene or sustainable aviation fuels (SAFs). The model utilizes data from the engine emission database (EEDB) released by the International Civil Aviation Organization (ICAO) and results obtained from several in-situ emission measurements conducted during ground and cruise phases. The model has been validated by comparing measured and predicted data, and the results demonstrate its high prediction accuracy for both the ground (R2>0.95) and cruise phases (R2>0.9). This surpasses traditional prediction models that rely on fuel flow rate, such as the Boeing Fuel Flow Method 2 (BFFM2). Furthermore, the model can predict NOx emissions from aircrafts burning SAFs with satisfactory accuracy, facilitating the development of a more complete and accurate aviation NOx emission inventory, which can serve as a basis for aviation environmental and climatic researc

关键词： Forecasting

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Reduction of the oxidative damage to H_(2)O_(2)-induced HepG2 cells via the Nrf2 signalling pathway by plant flavonoids Quercetin and Hyperoside

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Food Science and Human Wellness 2024年第4期13卷 1864-1876页

作者： Meijing Zhang Gaoshuai Zhang Xiangxing Meng Xinxin Wang Jiao Xie Shaoshu Wang Biao Wang Jilite Wang Suwen Liu Qun Huang Xu Yang Jing Li Hao Wang State Key Laboratory of Food Nutrition and Safety Tianjin University of Science and Technology(TUST)Tianjin 300457China Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of EducationGuizhou Medical UniversityGuiyang 550025China College of Chemical Engineering and Materials Science Tianjin University of Science and Technology(TUST)Tianjin 300457China Department of Agriculture Hetao CollegeBayannur 015000China College of Food Science&Technology Hebei Normal University of Science and TechnologyQinhuangdao 066004China National Center of Supervision and Inspection for Processed Food Quality Tianjin Institute for Food Safety Inspection TechnologyTianjin 300457China

Hyperoside and quercetin are similar in molecular *** this study,the antioxidant regulatory targets of hyperoside and quercetin are mainly in the nuclear factor(erythroid-2-derived)-related factor 2(Nrf2)pathway predicted by network *** the antioxidant effect and mechanism of hyperoside and quercetin were measured and compared in H_(2)O_(2)-induced Hep G2 cells and Caenorhabditis *** findings indicated that quercetin was more effective than hyperoside in reducing oxidative damage,which was proved by improved cell viability,decreased reactive oxygen species(ROS)production,decreased cellular apoptosis,and alleviated mitochondrial *** addition,quercetin was more efficient than hyperoside in enhancing the expression of Nrf2-associated m RNAs,increasing the activities of superoxide dismutase(SOD),glutathione peroxidase(GSH-Px),and catalase(CAT),and reducing the cellular malondialdehyde(MDA)*** was superior to hyperoside in prolonging the lifespan of worms,decreasing the accumulation of lipofuscin,inhibiting ROS production,and increasing the proportion of skn-1 in the *** the Nrf2 inhibitor ML385,we verified that quercetin and hyperoside primarily protected the cells against oxidative damage via the Nrf2 signalling ***,molecular docking and dynamics simulations demonstrated that the quercetin-Kelch-like ECH-associated protein 1(Keap1)complex was more stable than the hyperoside-Keap1 *** stable structure of the complex might hinder the binding of Nrf2 and Keap1 to release Nrf2 and facilitate its entry into the nucleus to play an antioxidant ***,quercetin had a better antioxidant than hyperoside.

关键词： Hyperoside Quercetin HepG2 cell Oxidative damage Nrf2 signalling pathway

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Identifying key Drivers of Short-Term Abnormally Low Dissolved Oxygen Concentrations at a Trans-Provincial Reservoir in the Dongjiang Headwater Watershed, China

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SSRN 2024年

作者： Yang, Kun Peng, Minggang Liu, Yuxian Zhang, Shixi Weng, Shichuang Zhong, Chao Liu, Shuaishuai Chen, Huaxiang South China Institute of Environmental Sciences Ministry of Ecology and Environment Guangzhou510655 China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control Guangzhou510655 China School of Public Administration Guangzhou University Guangzhou510006 China School of Environmental Science and Engineering Guangzhou University Guangzhou510006 China Shenzhen Municipality Ecology and Environment Intelligent Control Center Shenzhen518034 China Bureau of Hydrology and Water Resources Pearl River Water Resources Commission of Ministry of Water Resources Guangzhou510611 China Ecology and Environment Bureau of Xunwu County Ganzhou342200 China

Study region: The Douyan Reservoir, South China, under a trans-provincial ecological compensation assessment *** focus: Occasional occurrences of dissolved oxygen (DO) concentrations exceeding the regulatory threshold present challenges to reservoir and river basin management. We examined factors causing short-term abnormally low DO events in the reservoir using hydrological, water quality, aquatic ecosystem, and sediment *** hydrological insights: Significant positive correlations were found between nutrient concentrations (ammonia nitrogen and total nitrogen) in the reservoir and its inflow rivers in 2021. Before abnormally low DO events in 2021, substantial total phosphorus (TP) influx from inflow rivers coincided with historically low inflow and outflow rates and peak temperatures in the reservoir. Allochthonous nutrient inputs (nitrogen and phosphorus), water temperature, and flow rates may have facilitated blooms and subsequent declines of algae, causing sudden DO declines in the reservoir. Moreover, intensified aquatic ecological monitoring in May 2021 (before pH approached its regulatory limit) indicated significant positive correlations: chlorophyll-a with DO and pH, and with total nitrogen (TN) and TP, and pH with DO. These suggest short-term abnormal events resulted from phytoplankton lifecycle activities, driven by an internal-external coupling mechanism, with continuous allochthonous TN inputs and short-term adequate TP influxes acting as primary drivers, and hydrological conditions as inducing factors. This study recommends incorporating TN into ecological compensation assessments for enhanced China’s reservoir and river basin management. © 2024, The Authors. All rights reserved.

关键词： Dissolved oxygen

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Interfacial mechanism of asymmetric Gemini surfactant in synergy with kerosene for enhancing low-rank coal flotation

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Colloids and Surfaces A: Physicochemical and Engineering Aspects 2025年 722卷

作者： Wang, Xin Cui, Xinyu Ding, Rui Cheng, Gan Qin, Yonghong Abaka-Wood, George Gao, Guandao Li, Enze Cheng, Fangqin Institute of Resources and Environmental Engineering State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources Shanxi Laboratory of Yellow River Shanxi University No. 92 Wucheng Road Taiyuan030006 China ARC Centre of Excellence for Enabling Eco-Efficient Beneficiation of Minerals Future Industries Institute University of South Australia AdelaideSA5095 Australia State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University No. 163 Xianlin Road Nanjing210023 China

The depletion of high-quality coal resources has led to the increasing prominence of low-rank coal (LRC) in the energy sector. Flotation based on gas/liquid/solid interfacial interaction remains an effective way to recovery of combustible matter and achieve clean utilization of LRC. Addressing the low efficiency and high consumption of traditional hydrocarbon oils (such as kerosene) in LRC flotation has been a major focus of researchers. In this work, the performance and interfacial mechanism of asymmetric Gemini surfactant in synergy with kerosene for enhancing LRC flotation were investigated. The flotation results showed that among the three Gemini surfactants, ethylene-based [(octyl dimethyl/tetradecyl dimethyl) chloride ammonium] (G8–14) exhibited the best synergistic effect. Optimization of the synergistic flotation process of G8–14 and kerosene for LRC was performed with response surface methodology (RSM) using Box-Behnken design. A quadratic model was generated for predicting the combustible matter recovery, and it was also used to optimize the flotation conditions. The optimum conditions were determined and included G8–14 concentration of 91.11 mg/L, pH of 8.38, and pulp density of 80.38 g/L. Under optimum conditions, the combustible matter recovery reached 78.72 %. The hydrophobicity and zeta potential of LRC surface were obviously enhanced, and it made kerosene easier to spread and adsorb on LRC surface after treatment by G8–14. The ‘bridging action’ of G8–14 molecule between the negatively charged sites at LRC surface and kerosene was confirmed as the major mechanism for the enhancement of their interfacial interaction. This study provides new technical supports and theoretical insights for the clean and efficient utilization of LRC. © 2025 Elsevier B.V.

关键词： Froth flotation

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Accumulation and Speciation of Arsenic in Eisenia Fetida in Sodium Arsenite Spiked Soils - a Dynamic Interaction between Soil and Earthworms

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SSRN 2022年

作者： Xing, Weiqin Geng, Hongpei Wang, Yali Zhao, Linlin Yang, Yongqiang Wang, Yale Tian, Shuhang Li, Liping School of the Environmental Engineering Henan University of Technology Henan Zhengzhou450001 China Henan International Joint Laboratory of Environmental Pollution Remediation and Food Quality Security Henan Zhengzhou450001 China State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollutants Hunan Changsha410000 China Environmental Monitoring Station of Jiyuan City Henan Jiyuan459000 China

Arsenic (As) is a toxic metalloid that is a significant global pollutant of the environment as well as a persistent bioaccumulation carcinogen. Earthworms are frequently employed as sentinel organisms to investigate the bioavailability of As in contaminated soils. However, the process of accumulation of As in earthworms and the mechanism of transformation of As species in their bodies are not well understood. The accumulation of As and variation of As species in the earthworms (Eisenia fetida) exposed to sodium arsenite (0, 20, and 80 mg kg-1 As) were investigated in this study. The total As concentration in earthworms was dose-dependent on the content of As in soil. After 56 days of exposure, the highest total earthworm As content was found in the high concentration treatment (772 ± 21 mg kg-1), followed by the low concentration treatment (579 ± 42 mg kg-1) and CK (31 ± 1 mg kg-1). The proportion of trivalent As in earthworms increased from 70% to more than 90% in the three treatments, and pentavalent As decreased by 11 - 18% during 56 days. While the sum of the four organic As species reached a maximum ( © 2022, The Authors. All rights reserved.

关键词： Arsenic

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Compound Hot and Ozone Extremes in Urban China

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SSRN 2023年

作者： An, Ning Chen, Yang Zhai, Panmao Li, Jiangdong Ying, Wei State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences Beijing100081 China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China Institute of Urban Meteorology China Meteorology Administration Beijing100089 China

Hot extremes and ozone pollution have long been known detrimental to public health, but until very recently disproportionate health impacts from their joint occurrence—compound hot and ozone extremes (CHOEs)—have not been sufficiently aware of. Based on high-quality observations of air temperature and surface ozone concentration, we here examined the features of urban CHOEs and their dependence on city population and background climates. Results show the ozone-temperature slope (mO3-T) is significantly correlated with city population size, and the correlation is much weaker (0.37) in moister and cloudier cities (Cluster I) as opposed to that (0.70) in drier and sunnier cities (Cluster II). Larger cities are more susceptible to CHOEs with Cluster II megacities (population ＞ 10 million) registering about 7 days of CHOEs annually but ~ 3 days for small cities (population ≤ 1 million). Most cities experience elevated risks of CHOEs in urban areas relative to surrounding rural areas, especially so for densely-populated cities and those located in drier and sunnier environments. This study emphasizes the importance and urgency of emission reduction to mitigate the health burden from not only hot extremes but also their hazardous compounding with surface ozone. © 2023, The Authors. All rights reserved.

关键词： Ozone

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