A5010788717- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Atmospheric Ozone and Climate
- Catalytic Processes in Materials Science
- Atmospheric and Environmental Gas Dynamics
- Organic Chemistry Cycloaddition Reactions
- Energy, Environment, and Transportation Policies
- Advanced Chemical Sensor Technologies
- Electron Spin Resonance Studies
- Environmental Chemistry and Analysis
- Electrochemical sensors and biosensors
- Water Quality Monitoring and Analysis
- Electrocatalysts for Energy Conversion
- Clinical Nutrition and Gastroenterology
- Advanced Nanomaterials in Catalysis
- Earthquake Detection and Analysis
- Vitamin D Research Studies
- Indoor Air Quality and Microbial Exposure
- Environmental Policies and Emissions
- COVID-19 impact on air quality
- Free Radicals and Antioxidants
- Catalysis and Oxidation Reactions
- Carbon dioxide utilization in catalysis
Chinese Research Academy of Environmental Sciences
2022-2025
State Key Laboratory of Vehicle NVH and Safety Technology
2025
Peking University
2017-2024
Jilin University
2024
State Key Joint Laboratory of Environment Simulation and Pollution Control
2017-2024
Ministry of Ecology and Environment
2023-2024
Dalian Polytechnic University
2024
Dalian University
2024
Dalian University of Technology
2024
Forschungszentrum Jülich
2019
Particulate nitrate (pNO3–) has often been found to be the major component of fine particles in urban air-sheds China, United States, and Europe during winter haze episodes recent years. However, there is a lack knowledge regarding experimentally determined contribution different chemical pathways formation pNO3–. Here, for first time, we combine ground tall-tower observations quantify pNO3– using observationally constrained model approach based on direct OH N2O5 air-shed. We find that...
Abstract Hydroxyl radicals (OH) determine the tropospheric self-cleansing capacity, thus regulating air quality and climate. However, state-of-the-art mechanisms still underestimate OH at low nitrogen oxide high volatile organic compound regimes even considering latest isoprene chemistry. Here we propose that reactive aldehyde chemistry, especially autoxidation of carbonyl peroxy (R(CO)O 2 ) derived from higher aldehydes, is a noteworthy regeneration mechanism overwhelms contribution...
Abstract. The first OH and HO2 radical observation in Yangtze River Delta, one of the four major urban agglomerations China, was carried out at a suburban site (Taizhou) summer 2018 from May to June, aiming elucidate atmospheric oxidation capacity this region. maximum diurnal averaged concentrations were 1.0×107 1.1×109 cm−3, respectively, which second highest HOx (sum HO2) observed China. HONO photolysis dominant primary source, accounting for 42 % total initiation rate. Other contributions...
Monoterpenes have been known to a critical influence on air quality and climate change through their impact the formation of fine particles. Here we present field evidence that monoterpene oxidations largely enhanced local ozone production in regional site eastern China. The observed was most likely from biomass burning rather than biogenic emissions, as indicated by high correlation with CO at night-time, ratio these two species consistent previously determined values experiments. Fast were...
Abstract. The ambient radical concentrations were measured continuously by laser-induced fluorescence during the STORM (STudy of Ozone foRmation Mechanism) campaign at Shenzhen site, located in Pearl River Delta China, autumn 2018. diurnal maxima 4.5×106 cm−3 for OH radicals and 4.2×108 HO2 (including an estimated interference 23 %–28 % from RO2 daytime), respectively. state-of-the-art chemical mechanism underestimated observed concentration, similar to other warm-season campaigns China....
Abstract. HONO is an important precursor for OH radicals that impact secondary-pollutant production. However, there are still large uncertainties about different sources which hinder accurate predictions of concentration and hence atmospheric oxidation capacity. Here was measured during the EXPLORE-YRD campaign (EXPeriment on eLucidation Oxidation capacity aerosol foRmation their Effects in Yangtze River Delta), along with other parameters, enabling us to comprehensively investigate...
Atmospheric Oxidation Capacity (AOC) quantifies the ability of atmosphere to oxidize primary species. It plays a crucial role in initiating atmospheric chemical processes and impacts formation secondary pollutants, such as ozone (O₃) aerosols. AOC is fundamentally determined by concentrations reactivity oxidants, including O₃, hydroxyl radicals (OH), nitrate (NO₃). Due inherent challenges direct measurement, typically inferred through numerical modeling....
InfoMetricsFiguresRef. Environmental Science & TechnologyASAPArticle This publication is free to access through this site. Learn More CiteCitationCitation and abstractCitation referencesMore citation options ShareShare onFacebookXWeChatLinkedInRedditEmailBlueskyJump toExpandCollapse ViewpointMarch 19, 2025Overlooked Underestimation of Mobile Sources Posing a Pronounced Imbalance in the HONO BudgetClick copy article linkArticle link copied!Jia KeJia KeState Protection Key Laboratory Vehicle...
Abstract. Organic nitrates serve as important secondary oxidation products in the atmosphere, playing a crucial role atmospheric radical cycles and influencing production of pollutants (ozone (O3) organic aerosols). However, field measurements are scarce China, comprehensive localized mechanism for is absent, hindering effective pollution mitigation strategies. In this study, we conducted ambient gaseous examined their effects on local O3 at polluted urban site eastern China during summer....
The hydroxyl radical (OH) is the main source of atmospheric oxidation capacity, which oxidizes primary pollutants into secondary pollutants.Therefore, measurements and characterization sink OH are critical to understand formation mechanism regional pollution.However, removal routes still cannot be quantified accurately.OH reactivity can describe total loss rate oxidation, thus playing an important role in budget analysis.The defined as pseudo first-order coefficient for all reactions air...
When thulium is doped into Ni 3 Fe LDH, coupling 4f orbitals with the LDH system forms an electronic buffer band and Pt loading catalyzes alkaline overall water splitting.