A5100361828- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Catalytic Processes in Materials Science
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Industrial Gas Emission Control
- nanoparticles nucleation surface interactions
- Gas Sensing Nanomaterials and Sensors
- Nanomaterials for catalytic reactions
- Advanced oxidation water treatment
- Molecular Sensors and Ion Detection
- Coagulation and Flocculation Studies
- Tree-ring climate responses
- Water Treatment and Disinfection
- Water Quality Monitoring and Analysis
- Indoor Air Quality and Microbial Exposure
- Luminescence and Fluorescent Materials
- Particle Dynamics in Fluid Flows
- Remote Sensing and Land Use
- Advanced biosensing and bioanalysis techniques
- Plant Water Relations and Carbon Dynamics
- Mercury impact and mitigation studies
- Copper Interconnects and Reliability
Research Center for Eco-Environmental Sciences
2013-2025
Chinese Academy of Sciences
2013-2025
State Key Joint Laboratory of Environment Simulation and Pollution Control
2016-2025
University of Chinese Academy of Sciences
2018-2024
Xi'an Botanical Garden of Shaanxi Province
2022-2024
Hainan University
2023
Tsinghua University
2022
Taiyuan University of Technology
2022
University of Science and Technology Beijing
2021
North China Electric Power University
2017-2019
PM2.5 concentrations have decreased remarkably in China recent years, coinciding with a more rapid decrease SO2 and slower NO2 concentrations, while O3 increased. Correlations between key gaseous pollutants were studied to identify linked trends as means of understanding the impacts air pollution control China. In most cities, PM2.5–NO2 correlation coefficients higher than PM2.5–SO2 coefficients, gap tended expand quality improved. Multiple linear regression also indicated that sensitive...
Abstract. Gasoline evaporative emissions have become an important anthropogenic source of urban atmospheric volatile organic compounds (VOCs) and secondary aerosol (SOA). These a significant impact on regional air quality, especially in China where car ownership is growing rapidly. However, the contribution to (SA) not clear pollution complex which high concentration SO2 NH3 was present. In this study, effects SA formation from unburned gasoline vapor were investigated 30 m3 indoor smog...
Secondary organic aerosol (SOA) is an important component of atmospheric fine particles (PM2.5), while the key factors controlling SOA formation in ambient air remain poorly understood. In this work, Beijing urban was investigated using oxidation flow reactor (OFR) with high concentrations OH radicals. The potential increased significantly increase PM2.5 concentration during observation. optimum exposure time, which aging time equivalent to (with similar exposure) associated peak formation,...
Secondary organic aerosol (SOA) plays a critical role in sustained haze pollution megacities. Traditional observation of atmospheric aerosols usually analyzes the ambient (OA) but neglects SOA formation potential (SOAFP) precursors remaining air. Knowledge on SOAFP is still limited, especially megacities suffering from frequent haze. In this study, air urban Beijing was characterized at different levels based two-year field using an oxidation flow reactor (OFR) system. Both OA and increased...
Abstract Secondary organic aerosol (SOA) plays a significant role in contributing to atmospheric fine particles, as well global air quality and climate. However, the current understanding of formation SOA its simulation is still highly uncertain due complexity precursor VOCs. In our study, different mixed VOC scenarios was investigated using 30 m 3 indoor smog chamber. By comparing individual scenarios, it found that yield from anthropogenic VOCs (AVOCs) can be positively (+83.9%) affected...
China is facing dual pressures to reduce both PM2.5 and O3 pollution, the crucial precursors of which are NOx VOCs. In our study, role in secondary organic aerosol (SOA, important constituent PM2.5) formation was examined 30 m3 indoor smog chamber. As revealed present level can obviously affect OH concentration volatility distribution gas-phase oxidation products thus SOA formation. Reducing NOx-sensitive regime inhibit (by 42%), resulting reduction capacity, suppresses 45%) by inhibiting O-...
Abstract. Atmospheric submicrometer aerosols have a great effect on air quality and human health, while their formation evolution processes are still not fully understood. Herein, the crucial role of atmospheric oxidation capacity, as characterized by OH exposure dose in secondary aerosols, was systematically investigated based highly time-resolved chemical characterization PM1 southern suburb Beijing summertime from 25 July to 21 August 2019. The averaged concentration 19.3 ± 11.3 µg m−3,...
Regional transport of air pollutants is a serious challenge to outdoor O3 pollution control. Characterizing the by traditional quality models heavily relies on accurate precursor emission inventories, chemical reaction mechanisms, and meteorological factors. In this study, pollutant concentrations upwind cities were incorporated as features into random forest regression model (Traj-RF) investigate contribution regional local pollution. Hainan island was selected target area in due its being...
The activation of molecular oxygen on transition metal oxide surfaces plays a crucial role in atmospheric chemistry and heterogeneous catalysis; however, understanding the intricate mechanisms remains challenge. In this study, we elucidate for first time sulfur dioxide (SO2) enhancing manganese (γ-MnO2) surface, thereby facilitating oxidation nitric (NO) to nitrogen (NO2). theoretical calculation results further demonstrate that adsorbed SO2 formed sulfate can promote adsorption O2...
The hygroscopic behavior of particles is important for assessing their environmental and climate effect. individual has been widely investigated; however, the mixed still not well-known. Although Zdanovskii–Stokes–Robinson (ZSR) method could be applied to predict hygroscopicity some aerosol mixtures, it invalid describe humidification process when chemical reactions take place. In present study, growth factors (GF) oxalic acid (H2C2O4), nitrate (Ca(NO3)2, NaNO3, Zn(NO3)2), H2C2O4/nitrate...
Alkyl vinyl ethers are widely used as fuel additives. Despite this, their atmospheric chemistry and secondary organic aerosol (SOA) formation potentials still not well-known under complex pollution conditions. In this work, we examined the impact of SO2, relative humidity (RH), particle acidity on oxidation state (OSc) SOA from butyl ether (BVE) ozonolysis. Increasing SO2 concentration produced a notable promotion OSc due to significant increase in H2SO4 particles more highly oxidized...
Abstract. 2-Methoxyphenol (guaiacol) is derived from the lignin pyrolysis and taken as a potential tracer for wood smoke emissions. In this work, effect of SO2 at atmospheric levels (0–56 ppbv) on secondary organic aerosol (SOA) formation its oxidation state during guaiacol photooxidation was investigated in presence various inorganic seed particles (i.e., NaCl (NH4)2SO4). Without particles, SOA yields ranged (9.46±1.71) % to (26.37±2.83) could be well expressed by one-product model....