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SSRN 2022年

作者： Zuo, Xiaojun Chen, Shaojie Zhang, Songhu Li, Ting Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Joint Laboratory of Atmospheric Pollution Control Nanjing210044 China

Recently, increasing attention has been paid to antibiotic resistance genes (ARGs) in urban stormwater runoff. However, no available literature could be found on ARGs leaching from urban underlying surface sediments during stormwater runoff. In this study, surface sediments from commercial public squares around Nanjing (China) was selected for the investigation of target ARGs leaching kinetics, showing that absolute abundances of target ARGs desorption reached at the equilibrium during leaching time of 120-240min with all of the desorption efficiencies about 30%, indicating that there would be low proportion of leaching ARGs in the total ARGs migrating with runoff during rainfall events. Five target ARGs leaching including intI1 (clinic), strA, strB, tetM and tetX can be better described by the pseudo-second-order equation, while qacEdelta1 leaching can be better described by the pseudo-first-order equation, and the leaching for both sul1 and sul2 can be well described by the pseudo-first-order and pseudo-second-order equations. The effects of environmental factors including S/L ratios, pH values and water temperatures indicated that leaching efficiencies of target ARGs enhanced significantly with the increase of S/L ratios and water temperatures, but decreased with the increase of pH values. The transmission experiments after the simulated solar irradiation and heat implied that both large solar UV irradiation (30W/m2) and high temperature (40℃) were conducive to conjugation and transformation frequencies of ARGs. Furthermore, both high Cao and medium PAM levels could be effective for blocking ARGs transmission in the leachate from underlying surface sediments. © 2022, The Authors. All rights reserved.

关键词： Leaching

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Variations in summertime ozone in Nanjing between 2015 and 2020: roles of meteorology, radical chain length and ozone production efficiency

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Frontiers of environmental Science & Engineering 2024年第11期 86-97页

作者： Li Lin Li Jingyi Qin Momei Xie Xiaodong Hu Jianlin Zhang Yuqiang Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science & Technology Nanjing 210044 China Environment Research Institute Shandong University Qingdao 266237 China

● Temperature, relative humidity and wind field are influential meteorological factors.● OH radical chain length and OPE are dominated by the NOxdecline.● The O3formation is controlled by VOCs and NOxin 2020 *** in ozone (O3) can be evaluated to inform policy effectiveness and develop reasonable emissions reduction measures. This study investigated the causes of summertime maximum daily 8-h average (MDA8) O3variation between 2015 and 2020 in Nanjing, China, a megacity in the Yangtze River Delta (YRD) region, from the perspective of meteorological conditions and anthropogenic emissions of O3precursors (VOCs and NOx). Compared with 2015, the observed MDA8 O3decreased by 19.1 μg/m3in August 2020. The indirect and indirect impacts of meteorological conditions contributed 44% of the decline, with temperature, relative humidity, and wind playing important roles in the O3variation. The O3drop by 10.7 μg/m3(56% of the total decrease) may have been due to the decreases in anthropogenic emissions of VOCs and NOxby 7.8% and 11.7%, respectively. The longer hydroxyl (OH) radical chain length and higher ozone production efficiency (OPE) indicated that the reduction of anthropogenic emissions accelerated the ROx(ROx= OH + HO2+ RO2) and NOxcycles in O3production, making O3more sensitive to NOx. This corresponded to the O3formation shifting from a VOC-limited regime in 2015 to a transition regime in 2020 and O3decrease with anthropogenic emission reduction. Hence, the joint control of O3precursor emissions can effectively mitigate O3pollution in Nanjing.

关键词： Ozone Meteorological condition Anthropogenic emission OH radical chain length OPE

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Effect of Zinc Oxide Nanoparticles on Denitrification and Denitrifying Bacteria Communities in Typical Estuarine Sediments

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Journal of Ocean University of China 2021年第3期20卷 599-607页

作者： CHEN Xi XIANG Zhuangzhuang REN Zhaomeng HUANG Xiao LI Hui SUN Pengfei BAI Jie College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlSchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Marine Environmental Science and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China

For revealing the effects of increasing of zinc oxide nanoparticles(ZnO NPs)on denitrification and denitrifying bacteria communities in estuarine sediments,the surface sediments of two typical estuaries(the Yangtze River Estuary and the Yellow River Estuary)were added with medium concentration(170mgL−1)and high concentration(1700mgL−1)of ZnO NPs for anaerobic cul-ture in *** concentration of NO_(3)^(−)and NO_(2)^(−),the reductase activity and denitrification rate were measured by physico-chemical analysis,nirS gene abundance and denitrifying bacteria communities by molecular biological *** results showed that ZnO NPs inhibited NO_(3)^(−), NO_(2)^(−)reduction process and NO_(3)^(−), NO_(2)^(−)reductase activity,and a stronger inhibition effect resulting from the higher ZnO NPs *** NPs decreased nirS gene abundance and community diversity of denitrifying *** addition,the inhibition degree of ZnO NPs on the denitrification process of sediments in different estuaries was *** results were of great significance for evaluating the potential ecological toxicity and risks of nanomaterials in estuaries.

关键词： zinc oxide nanoparticles denitrification denitrifying bacteria community estuarine sediments

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Influence of entropy on catalytic performance of high-entropy oxides (NiMgZnCuCoOx) in peroxymonosulfate-mediated acetaminophen degradation

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Chemosphere 2024年 362卷 142610页

作者： Meng, Hong Gong, Zhiheng Xiang, Xuepeng Zhu, Yunmin Wu, Xuefeng Chen, Yan Zhang, Yongqing School of Environment and Energy Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control South China University of Technology Guangzhou510006 China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education Guangzhou510006 China State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou510640 China Department of Mechanical Engineering City University of Hong Kong Hong Kong 999077 China

Developing a high-performance activator is crucial for the practical application of peroxymonosulfate-based advanced oxidation processes (PMS-AOPs). High-entropy oxides (HEOs) have attracted increasing attention due to their stable crystal structure, flexible composition and unique functionality. However, research into the mechanisms by which HEOs function as PMS activators for degrading organic pollutants remains insufficient, and the relationship between entropy and the catalytic performance of HEOs has yet to be clarified. In this study, we synthesized NiMgZnCuCoOx with different levels of entropy as PMS activators for acetaminophen (APAP) degradation, and observed a significant effect for entropy on the catalytic performance. Sulfate radicals (SO4•‒) were identified as the primary reactive oxygen species (ROS), while hydroxyl radicals (•OH) and singlet oxygen (1O2) act as secondary ROS during APAP degradation. Both the Co2+ contents and the oxygen vacancy concentration in NiMgZnCuCoOx are found to increase with the entropy. An increase in the Co2+ sites leads to more activation sites for PMS activation, while excessive oxygen vacancies consume PMS, producing weak oxidation species, and affect the electron-donating ability of Co2+. Consequently, the NiMgZnCuCoOx with middle level of entropy exhibits the optimal performance with APAP degradation rate and mineralization rate reaching 100% and 74.22%, respectively. Furthermore, the degradation intermediates and their toxicities were assessed through liquid chromatography-mass spectrometry and quantitative structure-activity relationship analysis. This work is expected to provide critical insight into the impact of the HEOs entropy on the PMS activation and guide the rational design of highly efficient peroxymonosulfate activators for environmental applications. © 2024

关键词： Oxygen vacancies

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PM_(2.5)and water-soluble inorganic ion concentrations decreased faster in urban than rural areas in China

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Journal of environmental Sciences 2022年第12期34卷 83-91页

作者： Yangyang Zhang Aohan Tang Chen Wang Xin Ma Yunzhe Li Wen Xu Xiaoping Xia Aihua Zheng Wenqing Li Zengguo Fang Xiufen Zhao Xianlong Peng Yuping Zhang Jian Han Lijuan Zhang Jeffrey L.Collett Jr Xuejun Liu Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijing 100193China Analysis and Testing Center Beijing Normal UniversityBeijing 100875China Fujian Institute of Tobacco Agricultural Sciences Fuzhou 350003China College of Resources and Environment Qingdao Agricultural UniversityQingdao 266109China College of Resources and Environment Northeast Agricultural UniversityHaerbin 150030China College of Resources and Environment Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources UseHunan Agricultural UniversityChangsha 410128China College of Resources and Environment Hebei Agricultural UniversityBaoding 071001China Department of Atmospheric Science Colorado State UniversityFort CollinsCO 80523USA

We investigated variations of PM_(2.5)and water-soluble inorganic ions chemical characteristics at nine urban and rural sites in China using ground-based *** 2015 to 2019,mean PM_(2.5)concentration across all sites decreased by 41.9μg/m~3with a decline of 46%at urban sites and 28%at rural sites,where secondary inorganic aerosol(SIAs)contributed to 21%(urban sites)and 17%(rural sites)of the decreased PM_(2.5).SIAs concentrations underwent a decline at urban locations,while sulfate(SO_(4)^(2–)),nitrate(NO_(3)^(–)),and ammonium(NH_(4)^(+))decreased by 49.5%,31.3%and 31.6%,***,only SO_(4)^(2–)decreased at rural sites,NO_(3)^(–)increased by 21%and NH_(4)^(+)decreased *** changes contributed to an overall SIAs increase in *** molar ratios of NO_(3)^(–)to SO_(4)^(2–)and NH_(4)^(+)to SO_(4)^(2–)were observed at urban sites than rural sites,being highest in the heavily polluted *** molar ratios of NH_(3)/NH_xwere higher in 2019 than 2015 at both urban and rural sites,implying increasing NH_xremained as free NH_(3).Our observations indicated a slower transition from sulfate-driven to nitrate-driven aerosol pollution and less efficient control of NO_(x)than SO_(2)related aerosol formation in rural regions than urban ***,the common factor at urban and rural sites appears to be a combination of lower SO_(4)^(2–)levels and an increasing fraction of NO_(3)^(–)to PM_(2.5)under NH_(4)^(+)-rich *** findings imply that synchronous reduction in NO_(x)and NH_(3)emissions especially rural areas would be effective to mitigate NO_(3)^(–)-driven aerosol pollution.

关键词： PM_(2.5) Nitrate Ammonium Sulfate Air pollutant emission pollution mitigation

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Insight to the Reaction Routes of Co2 Oxidative Dehydrogenation of Ethane to Ethylene: Analysis Driven by Experimental Data and Simplified Through Tandem-Reaction Couplings

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SSRN 2023年

作者： Wang, Ying Jin, Yuxin Chen, Ming Zhong, Zhiyong Zhao, Yun Huang, Haomin Ye, Daiqi Chen, Limin Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control School of Environment and Energy South China University of Technology Guangzhou510006 China National Engineering Laboratory for VOCs Pollution Control Technology and Equipment South China University of Technology Guangzhou510006 China

The complicated reaction networks of ethane oxidative dehydrogenation with CO2 (CO2-ODHE) significantly inhibit the researchers to clearly understand the intrinsic catalytic behaviors, causing the irrational catalyst design. The tandem-reaction couplings have been proposed to intuitively, clearly, accurately and quantitatively reveal ethane and CO2 reaction routes in CO2-ODHE. The application scope of the proposed calculation method has been investigated and defined;the rationality has been confirmed as well;finally, the rational optimization strategy of Co-SSZ-13 catalyst has been put forward according to the catalytic properties obtained. The experimental data combined with tandem-reaction coupling simplification reaction route analysis method can be extended to other similar complicated reaction systems which is essential to effectively guide the rational design of the highly efficient catalysts for complex reaction systems. © 2023, The Authors. All rights reserved.

关键词： Carbon dioxide

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Seasonal Variations in Aerosols in India: Roles of Meteorology, Domestic Anthropogenic Emissions, and Transboundary Transport

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SSRN 2023年

作者： Kang, Ling Liao, Hong Jason, Lee Yue, Xu Yang, Yang Li, Ke Li, Jiandong Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Jiangsu Nanjing China

We used a global 3-D chemical transport model GEOS-Chem to examine the seasonal variations in aerosols over India in 2015 by identifying the key meteorological variables and quantifying the contributions of domestic anthropogenic emissions and transboundary transport of anthropogenic aerosols. The model captured the spatiotemporal variations in the seasonal mean aerosol concentrations (correlation coefficient (R) ranged from 0.82 to 0.91) and daily aerosol optical depth (R=0.87). PM2.5 concentrations in India were higher in winter (DJF) and postmonsoon (ON) than in premonsoon (MAM) and monsoon (JJAS) seasons except in Northeast India (NEI). Statistical analysis showed that the planet boundary layer height (PBLH), precipitation rate and 850-hPa wind speed in Indo-Gangetic Plain (IGP), PBLH and 2-meter temperature (T2) in NEI, 850-hPa zonal wind (U850), T2 and surface relative humidity in West India (WI) and South India (SI), and U850 and T2 in Central India (CI) could explain 66%-86% of the seasonal variations in PM2.5 in these regions. The seasonal variations in PM2.5 in India were dominated by domestic anthropogenic emissions except in NEI, which experienced massive biomass burning emissions in MAM. Transboundary transport had a large impact on PM2.5 levels in Northwest India (NWI), NEI, WI, and IGP, with the annual mean contributions of 23.8%, 20.2%, 19.6%, and 15.7%, respectively. The major species of transboundary transport were organic carbon (OC), sulfate (SO42-) and nitrate (NO3-) in ON/DJF for IGP, NEI and WI, accounting for 56.3%-58.7% of the total transport. The major species of transboundary transport were SO42-, NO3- and NH4+ in JJAS for NWI (accounting for 67.3%) and SO42-, OC and NH4+ throughout the year for CI and SI (accounting for 67.4%-83.1%). These results are important for understanding air quality in India and have important implications for policy-making regarding emission controls. © 2023, The Authors. All rights reserved.

关键词： Organic carbon

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An overview for monitoring and prediction of pathogenic microorganisms in the atmosphere

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Fundamental Research 2024年第3期4卷 430-441页

作者： Jianping Huang Danfeng Wang Yongguan Zhu Zifeng Yang Maosheng Yao Xiaoming Shi Taicheng An Qiang Zhang Cunrui Huang Xinhui Bi Jiang Li Zifa Wang Yongqin Liu Guibing Zhu Siyu Chen Jian Hang Xinghua Qiu Weiwei Deng Huaiyu Tian Tengfei Zhang Tianmu Chen Sijin Liu Xinbo Lian Bin Chen Beidou Zhang Yingjie Zhao Rui Wang Han Li Collaborative Innovation Center for Western Ecological Safety College of Atmospheric SciencesLanzhou UniversityLanzhou 730000China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China National Clinical Research Center for Respiratory Disease Guangzhou Institute of Respiratory HealthFirst Affiliated Hospital of Guangzhou Medical UniversityState Key Laboratory of Respiratory Disease(Guangzhou Medical University)Guangzhou 510230China College of Environmental Sciences and Engineering Peking UniversityBeijing 100871China China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijing 100021China Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China Vanke School of Public Health Tsinghua UniversityBeijing 100084China State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Center for Pan-third Pole Environment Lanzhou UniversityLanzhou 730000China College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000China School of Atmospheric Sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 510640

Corona virus disease 2019(COVID-19)has exerted a profound adverse impact on human *** have demonstrated that aerosol transmission is one of the major transmission routes of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Pathogenic microorganisms such as SARS-CoV-2 can survive in the air and cause widespread infection among *** monitoring of pathogenic microorganism transmission in the atmosphere and accurate epidemic prediction are the frontier guarantee for preventing large-scale epidemic *** of pathogenic microorganisms in the air,especially in densely populated areas,may raise the possibility to detect viruses before people are widely infected and contain the epidemic at an earlier *** multi-scale coupled accurate epidemic prediction system can provide support for governments to analyze the epidemic situation,allocate health resources,and formulate epidemic response *** review first elaborates on the effects of the atmospheric environment on pathogenic microorganism transmission,which lays a theoretical foundation for the monitoring and prediction of epidemic ***,the monitoring technique development and the necessity of monitoring pathogenic microorganisms in the atmosphere are summarized and ***,this review introduces the major epidemic prediction methods and highlights the significance to realize a multi-scale coupled epidemic prediction system by strengthening the multidisciplinary cooperation of epidemiology,atmospheric sciences,environmental sciences,sociology,demography,*** summarizing the achievements and challenges in monitoring and prediction of pathogenic microorganism transmission in the atmosphere,this review proposes suggestions for epidemic response,namely,the establishment of an integrated monitoring and prediction platform for pathogenic microorganism transmission in the atmosphere.

关键词： Aerosol transmission Epidemic monitoring methods Epidemic prediction modelsEpidemic response Multidisciplinary cooperation

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中国碳收支:1980~2021年

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Science Bulletin 2024年第1期69卷 114-124页

作者：夏晓圣任培阳王旭辉刘丹陈修治丹利何斌何洪林居为民梁敏琪陆星劼彭静覃章才夏江周郑博魏静乐旭于贵瑞朴世龙袁文平 School of Atmospheric Sciences Guangdong Province Data Center of Terrestrial and Marine Ecosystems Carbon CycleSun Yat-sen UniversityZhuhai 510245China Sino-French Institute for Earth System Science College of Urban and Environmental SciencesPeking UniversityBeijing 100091China State Key Laboratory of Tibetan Plateau Earth System Resources and EnvironmentInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China State Key Laboratory of Earth Surface Processes and Resource Ecology College of Global Change and Earth System ScienceBeijing Normal UniversityBeijing 100875China Synthesis Research Center of China’s Ecosystem Research Network Key Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China International Institute for Earth System Science Nanjing UniversityNanjing 210023China Tianjin Key Laboratory of Water Resources and Environment Tianjin Normal UniversityTianjin 300387China Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China

As one of the world's largest emitters of greenhouse gases,China has set itself the ambitious goal of achieving carbon peaking and carbon ***,it is crucial to quantify the magnitude and trend of sources and sinks of atmospheric carbon dioxide(CO_(2)),and to monitor China's progress toward these *** state-of-the-art datasets and models,this study comprehensively estimated the anthropogenic CO_(2)emissions from energy,industrial processes and product use,and waste along with natural sources and sinks of CO_(2)for all of China during *** recognize the differences among various methods of estimating greenhouse emissions,the estimates are compared with China's National Greenhouse Gas Inventories(NGHGIs)for 1994,2005,2010,2012,and *** CO_(2)emissions in China have increased by 7.39 times from 1980 to 12.77 Gt CO_(2)a^(-1)in *** benefiting from ecological projects(e.g.,Three Norths Shelter Forest System Project),the land carbon sink in China has reached 1.65 Gt CO_(2)a^(-1)averaged through 2010-2021,which is almost 15.81 times that of the carbon sink in the *** average,China's terrestrial ecosystems offset 14.69%±2.49%of anthropogenic CO_(2)emissions through *** provincial-level administrative regions of China,Xizang and Qinghai,have achieved carbon neutrality according to our estimates,but nearly half of the administrative regions of China have terrestrial carbon sink offsets of less than 10%of anthropogenic CO_(2)*** study indicated a high level of consistency between NGHGIs and various datasets used for estimating fossil CO_(2)emissions,but found notable differences for land carbon *** estimates of the terrestrial carbon sinks of NGHGIs urgently need to be verified with process-based models which integrate the comprehensive carbon cycle processes.

关键词： CO_(2)emission Land carbon sink China Carbon neutrality Carbon budget

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Sulfur-Vacancy-Rich Zns/Cdin2s4 Heterojunction for Efficient Photocatalytic Selective Oxidation of Toluene to Benzaldehyde

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SSRN 2023年

作者： Zhang, Chenglin Qin, Junxian Yang, Changqing Hu, Yun School of Environment and Energy South China University of Technology Guangzhou510006 China Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control Guangzhou510006 China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education Guangzhou510006 China

The conversion of the volatile organic pollutant to industrially valuable chemicals using photocatalysis is a promising endeavor. Herein, ZnS/CdIn2S4 heterojunction with rich sulfur vacancy was constructed via a simple one-pot method for the selective photocatalytic oxidation of toluene to benzaldehyde. ZnS/CdIn2S4 has a suitable band gap and valence band position, thus possessing a mild oxidation ability to generate benzaldehyde while avoiding excessive oxidation. In addition, the presence of tightly bound contact interfaces and sulfur vacancy in ZnS/CdIn2S4 heterojunction facilitates the rapid separation of photogenerated electron-hole. These characteristics of the heterojunction synergistically promoted the selective photocatalytic oxidation of toluene, resulting in ZnS/CdIn2S4 exhibiting the highest benzaldehyde production rate (1025 μmol g-1 h-1) and the highest conversion rate (13. 7%), which were 93.1 and 56.9 times higher than those of ZnS and CdIn2S4, respectively. Furthermore, a possible response mechanism has been suggested based on a series of experiments. This study provides new insights into the combination of volatile organic pollutant degradation and high-value chemicals production. © 2023, The Authors. All rights reserved.

关键词： Zinc sulfide

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