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SSRN 2025年

作者： Tan, Huimin Man, Yan Du, Yuanfang Yu, Zhou Shi, Cong Ma, Shuai Wang, Yun Tang, Zhenchuang Zhang, Qinghai School of Public Health The key Laboratory of Environmental Pollution Monitoring and Disease Control Guizhou Medical University Guizhou China Institute of Quality Standard and Testing Technology Beijing Academy of Agriculture and Forestry Sciences Beijing China Institute of Chinese Materia Medica China Academy of Chinese Medical Sciences Beijing China Institute of Food and Nutrition Development Ministry of Agriculture and Rural Affairs Beijing China

This study presents an innovative microfluidic chip-based fluorescent aptasensor that combines G-quadruplex (G4) dimer enhancement with CRISPR/Cas12a technology for rapid, label-free detection of S. typhimurium. The system features a novel design incorporating self-assembled, replaceable reagent pre-stored tubes and an automated micromixing module with diamond-shaped microcolumns arranged in a "contraction-expansion" channel configuration. This design eliminates the need for complex microvalves while enabling efficient multi-step reactions. Our G4 dimer-enhanced microfluidic CRISPR/Cas12a aptasensor achieved remarkable performance metrics, including a broad linear detection range (3.6×10¹ to 3.6×10⁶ CFU/mL) and a low detection limit of 36 CFU/mL. The sensor demonstrated excellent specificity for S. typhimurium and proved highly effective in analyzing spiked food samples, including milk, pre-cut vegetables, and chicken, with recovery rates of 88.11-105.19%. The integration of G4 dimer enhancement significantly improved both the signal-to-noise ratio and detection accuracy. This innovative platform represents a significant advancement in automated, rapid, and highly sensitive detection methods for foodborne pathogens in food safety applications. © 2025, The Authors. All rights reserved.

关键词： Salmonella

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Enhanced mid-latitude warming due to poleward shift of sea salt aerosols in a warmer future

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Science Bulletin 2025年

作者： Yang, Yang Yu, Yang Wang, Yujue Wang, Hailong Russell, Lynn M. Wang, Pinya Liao, Hong State Key Laboratory of Climate System Prediction and Risk Management/Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology/Joint International Research Laboratory of Climate and Environment Change Nanjing University of Information Science and Technology Nanjing210044 China School of Environmental Science and Engineering Nanjing University of Information Science and Technology Nanjing210044 China Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Laboratory of Marine Environment and Ecology Ministry of Education of China Ocean University of China Qingdao266100 China Atmospheric Climate and Earth Sciences Division Pacific Northwest National Laboratory RichlandWA99352 United States Scripps Institution of Oceanography University of California San DiegoCA92093 United States

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A framework for investigating the air quality variation characteristics based on the monitoring data: Case study for Beijing during 2013–2016

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Journal of Environmental Sciences 2019年第7期31卷 225-237页

作者： Jixian Cui Jianlei Lang Tian Chen Shushuai Mao Shuiyuan Cheng Zhanshan Wang Nianliang Cheng Key Laboratory of Beijing on Regional Air Pollution Control College of Environmental & Energy Engineering Beijing University of Technology Beijing Municipal Environmental Monitoring Center

In this study, an analysis framework based on the regular monitoring data was proposed for investigating the annual/inter-annual air quality variation and the contributions from different factors(i.e., seasons, pollution periods and airflow directions), through a case study in Beijing from 2013 to 2016. The results showed that the annual mean concentrations(MC) of PM_(2.5), SO_2, NO_2 and CO had decreased with annual mean ratios of 7.5%, 28.6%, 4.6%and 15.5% from 2013 to 2016, respectively. Among seasons, the MC in winter contributed the largest fractions(25.8%～46.4%) to the annual MC, and the change of MC in summer contributed most to the inter-annual MC variation(IMCV) of PM_(2.5) and NO2. For different pollution periods, gradually increase of frequency of S-1(PM_(2.5), 0～ 75 μg/m^3) made S-1 become the largest contributor(28.8%) to the MC of PM_(2.5) in 2016, it had a negative contribution(-13.1%) to the IMCV of PM_(2.5); obvious decreases of frequencies of heavily polluted and severely polluted dominated(44.7% and 39.5%) the IMCV of PM_(2.5). For different airflow directions, the MC of pollutants under the south airflow had the most significant decrease(22.5%～62.5%), and those decrease contributed most to the IMCV of PM_(2.5)(143.3%),SO2(72.0%), NO_2(55.5%) and CO(190.3%); the west airflow had negative influences to the IMCV of PM_(2.5), NO_2 and CO. The framework is helpful for further analysis and utilization of the large amounts of monitoring data; and the analysis results can provide scientific supports for the formulation or adjustment of further air pollution mitigation policy.

关键词： monitoring data analysis Air quality variations Airflow directions pollution periods Beijing

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Developing Ni-based CO2 methanation catalysts with enhanced low-temperature activities via constructing advantageous mesoporous CeO2 nanosphere support

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Ceramics International 2025年

作者： Lu, Tianmin Zhu, Zehui Luo, Xue Lian, Linshui Wu, Cai-e Cao, Zhen Zhao, Xin Wu, Mei Xu, Leilei Chen, Mindong Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing210044 China College of Light Industry and Food Engineering Nanjing Forestry University Nanjing210037 China College of Chemical Engineering and Environmental Chemistry Weifang University Weifang261061 China National & Local Joint Engineering Research Centre for Mineral Salt Deep Utilization Huaiyin Institute of Technology Huaian223003 China School of Environment and Energy Engineering Anhui Jianzhu University Hefei230009 China

In this work, the advantageous mesoporous CeO2 nanosphere with large specific surface area up to 190.4 m2/g was facilely prepared using an improved hydrothermal method. The obtained mesoporous CeO2 nanosphere was used as the support for Ni-based CO2 methanation catalysts. The effects of Ni loading, structural properties, and redox characteristics on the catalytic performances were systematically investigated. The catalyst with 20 wt% Ni loading supported on mesoporous CeO2 nanosphere demonstrated exceptional low-temperature activity. A comprehensive suite of characterization techniques, including XRD, N2 physisorption, SEM, XPS, H2-TPR, CO2-TPD, in-situ DRIFTS, and online TPSR, were utilized to elucidate the underlying reasons for the superior performance. The superior activity of the Ni-based catalyst was attributed to the large specific surface area, mesoporous structure, and excellent redox properties of the mesoporous CeO2 nanosphere support. In contrast, Ni-based catalysts supported on commercial materials (e.g., SiO2, Al2O3, CeO2) exhibited poor low-temperature performance due to severe thermal sintering of metallic Ni active sites and inferior redox properties. Therefore, the present mesoporous CeO2 nanosphere with large specific surface area, advantageous redox property, and abundant surface oxygen vacancies are promising supports for Ni-based catalysts, enhancing low-temperature CO2 methanation performance and potentially benefiting other reactions. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Mesopores

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City level CO_(2) and local air pollutants co-control performance evaluation: A case study of 113 key envir on mental protection cities in China

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Advances in Climate Change Research 2022年第1期13卷 118-130页

作者： Qing-Yong ZHANG Bo-Feng CAI Mu-Dan WANG Jun-Xia WANG You-Kai XING Guang-Xia DONG Zhen ZHANG Xian-Qiang MAO School of Environment Beijing Normal University'Beijing 100875China Center for Climate Change and Environmental Policy Chinese Academy of Environmental PlanningBeijing 100012China China National Environmental Monitoring Centre Beijing 100012China Ministry of Transport Transport Planning and Research InstituteLaboratory of Transport Pollution Control and Monitoring TechnologyBeijing 100028China

‘Co-control',or synergistically reducing CO_(2)and local air polluta nt emissions,is an important strategy for cities to achieve'low carb on'and'blue sky'***,there were few studies to evaluate and compare the level of co-control of CO_(2) and local air pollutants in cities *** present study proposed qualitative and quantitative methods to evaluate the level of co-control of CO_(2)and three local air pollutant(SO_(2).NOX,and particulate matter PM)emissions in key environmental protection cities in China over two periods(2012-2015 and 2015-2018).Statistical analysis found that,though three local air pollutant emissions positively correlated with CO_(2) emission,no significantly positive correlation was found between local air pollutants emission reductions and CO_(2) emission reductions,indicating that co-control effects were poor in *** using the co-control effect coordinate system,qualitative evaluation showed that less than half of the sample cities could achieve co-control of the total amount of CO_(2) and local air *** employing the indicator of emission reduction equivalence(EReq),quantitative evaluation showed that the co-control level of the sample cities improved in 2015-2018 compared with *** regression analysis showed that,reducing coal consumption and economic development significantly enhanced the co-control performance of the observed *** present case study proved that the proposed methods for evaluation and comparison of the city co-control performance works well,and can be used in other countries and regions to promote global cities racing to carbon and local air pollutants co-control.

关键词： Co-control CO_(2)emission reduction Local air pollutant emission reduction:Performance evaluation Key environmental protection cities

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Enhanced removal of I^- on hierarchically structured layered double hydroxides by in suit growth of Cu/Cu2O

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Journal of Environmental Sciences 2020年第2期32卷 338-348页

作者： Jiuyu Chen Junyi Wang Qianhong Gao Xiaomei Zhang Ying Liu Peng Wang Yan Jiao Zongxiang Zhang Yi Yang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)Nanjing University of Information Science&TechnologyNanjing 210044China Jiangsu Environmental Protection Key Laboratory of Monitoring for Organic Pollutants in Soil Taizhou Environmental Monitoring CenterTaizhou 225300China

To further improve the removal ability of layered double hydroxide(LDH) for iodide(I^-) anions from wastewater, we prepared hierarchically porous Cu5Mg10Al5-LDH and used as a matrix for in suit growth of Cu/Cu2O on its surface, forming Cu/Cu2O-LDH, which was characterized and applied as an *** displayed high I^-saturation uptake capability(137.8 mg/g) of Cu/Cu2O-LDH compared with Cu5Mg10Al5-LDH(26.4 mg/g) even thermal activated LDH(76.1 mg/g).Thermodynamic analysis showed that the reaction between I^-anions and Cu/Cu2O-LDH is a spontaneous and *** kinetics analysis exhibited that adsorption equilibrium can be reached after 265 ***, the adsorbent showed satisfactory selectivity in the presence of competitive anions(e.g., SO4^2-), and could achieve good adsorption performance in a wide pH range of 3–8.A cooperative adsorption mechanism was proposed on the basis of the following two aspects:(1) ion exchange between iodide and interlayer anions;(2) the adsorption performance of Cu, Cu(Ⅱ) and Cu2O for I^-.Meanwhile, the difference between the adsorption mechanism of Cu/Cu2O-LDH, Cu5Mg10Al5-LDH and Cu5Mg10Al5-CLDH adsorbents was also elaborated and verified.

关键词： Layered double hydroxide Cu/Cu2O Iodide adsorption Hierarchical structure In suit growth

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^(18)F-Labeling techniques for positron emission tomography

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Science China Chemistry 2013年第12期56卷 1682-1692页

作者： LI Ying Jiangsu Key Laboratory of Atmospheric Environment Monitoring & Pollution Control Chemistry Department School of Environmental Science & Engineering Nanjing University of Information Science & Technology

Much research effort has been made to understand various biological processes at levels of molecules using molecular imaging techniques. Because of great sensitivity, high resolution, and rapid detection, positron emission tomography （PET） imaging is becoming one of the most used imaging techniques for medical diagnose and pre-clinical studies. Here we provide a review on molecular imaging and PET imaging. An introduction is also provided on ~SF-fluorine labeling techniques for the preparation of PET imaging probes. A summary and comparison of currently available ~SF-fluorine labeling methods is provided. The per- spectives for 18F-fluorine labeling techniques are also given.

关键词： molecular imaging positron emission tomography 18F-fluorine/fluoride specific activity radiochemical yield

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Land development suitability analysis for transport planning evaluation and optimization in mountainous ecological region

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Journal of Mountain Science 2022年第3期19卷 862-873页

作者： ZHU Gao-ru WANG Man LI Qi-li LIU Jie ZHAO Yan-ni GAO Jia-wei XU Hong-lei Laboratory of Transport Pollution Control and Monitoring Technology Transport Planning and Research InstituteMinistry of TransportBeijing 100028China College of Urban and Environmental Sciences Peking UniversityBeijing 100871China Key Laboratory for Environmental and Urban Sciences School of Urban Planning&DesignShenzhen Graduate SchoolPeking UniversityShenzhen 518055China

transportation planning is a critical component for creating an orderly,intensive,and sustainable pattern of land *** comprehensively considering the potential and suitability of transport construction,a comprehensive method combining resources and environmental carrying capacity(RECC)and land development suitability(LDS)was developed by using techniques of GIS,analytic hierarchy process(AHP)and threedimensional magic *** Aba prefecture in Sichuan Province of Southwest China as a case study,LDS for transportation was analyzed from three aspects,including overall planning layout,different transport modes,and transportation *** results showed that the transport planning scales of most counties in Aba were suitable,and the order of LDS of different transport modes was railway>highway=superhighway>tourism track,which already included 42 new transportation *** found that two counties(Maoxian County and Jiuzhaigou County)should improve the ecological protection level of transportation,in which the railway network construction should be encouraged,and some transportation projects with low LDS should be postponed or constructed *** suggest the combination of RECC and LDS for transportation could enhance the territorial space optimization and sustainable transport construction.

关键词： Land development suitability Resources and environment carrying capacity transport planning Evaluation Optimization Spatial analysis Mountainous ecological region

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Breaking the Activity-Stability Trade-Off of RuO2 via Metallic Ru Bilateral Regulation for Acidic Oxygen Evolution Reaction

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Angewandte Chemie - International Edition 2025年 e202503733页

作者： Lu, Qian Liu, Jinjie Zou, Xiaohong Huang, Birou Wu, Weixing Yin, Jun Liu, Zhao-Qing Wang, Ying Department of Chemistry The Chinese University of Hong Kong Ma Lin building Shatin 999077 N.T. Hong Kong Department of Applied Physics The Hong Kong Polytechnic University Kowloon 999077 N.T. Hong Kong Department of Mechanical Engineering The Hong Kong Polytechnic University Kowloon 999077 N.T. Hong Kong School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou510006 China School of Environmental Science and Technology 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 and Technology Nanjing210044 China

Developing highly efficient acidic oxygen evolution reaction (OER) electrocatalysts is crucial for proton exchange membrane water electrolyzer. RuO2 electrocatalysts, which followed a kinetically favorable lattice oxygen mechanism, perform a preferable intrinsic activity, but poor stability for acidic OER. Recent work often sacrifices the intrinsic activity of RuO2 to enhance stability. The balance between the activity and stability of RuO2-based catalysts is still overlooked in current research. Here, we report a controlled method to introduce metallic Ru onto RuO2 catalysts to form the Ru4+─O─Ru0 interfacial structure for decreasing the Ru4+ oxidation state and promoting deprotonation kinetics. Metallic Ru can serve as the electron donor to lower the oxidation state of *Vo-RuO42− in Ru/RuO2 for stabilizing the structure of *Vo-RuO42−-Ru/RuO2 to favour the acidic OER stability. Moreover, the deprotonation kinetics via the interfacial oxygen site between Ru4+ and Ru0 is significantly enhanced on Ru/RuO2 catalysts to improve the acidic OER activity. This work offers a unique perspective to balance the acidic OER activity and stability of RuO2. © 2025 The Author(s). Angewandte Chemie International Edition published by Wiley-VCH GmbH.

关键词： Deprotonation

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Molten-salt synthesis and composition-dependent luminescent properties of barium tungsto-molybdate-based solid solution phosphors

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Chinese Physics B 2016年第2期25卷 482-488页

作者：贺香红叶招莲关明云连宁孙建华 School of Chemistry and Environmental Engineering Jiangsu University of Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) School of Environment Science and EngineeringNanjing University of Information Science and Technology

Pr^（3＋）-activated barium tungsto-molybdate solid solution phosphor Ba（Mo_（1-z）W_z）O_4：Pr^（3＋）is successfully fabricated via a facile molten-salt approach. The as-synthesized microcrystal is of truncated octahedron and exhibits deep-red-emitting upon blue light excitation. Powder x-ray diffraction and Raman spectroscopy techniques are utilized to investigate the formation of solid solution phosphor. The luminescence behaviors depend on the resulting composition of the microcrystals with fixed Pr^（3＋）-doping concentration, while the host lattices remain in a scheelite structure. The forming solid solution via the substitution of [WO_4] for [MoO_4] can significantly enhance its luminescence, which may be due to the fact that Ba（Mo_（1-z）W_z）O_4：Pr^（3＋）owns well-defined facets and uniform morphologies. Owing to its properties of high phase purity,well-defined facets, highly uniform morphologies, exceptional chemical and thermal stabilities, and stronger emission intensity, the resulting solid solution phosphor is expected to find potential applications in phosphor-converted white lightemitting diodes（LEDs）.

关键词： molten-salt barium tungsto-molybdate microcrystals solid solution deep-red-emitting

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