A5091075691- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
- Atmospheric Ozone and Climate
- Ecology and Conservation Studies
- Air Quality Monitoring and Forecasting
- Luminescence and Fluorescent Materials
- Catalytic Processes in Materials Science
- Polydiacetylene-based materials and applications
- Adaptive Control of Nonlinear Systems
- Fluorine in Organic Chemistry
- Organic Light-Emitting Diodes Research
- Atmospheric aerosols and clouds
- Toxic Organic Pollutants Impact
- Spacecraft Dynamics and Control
- Nuclear and radioactivity studies
- Aerospace Engineering and Control Systems
Guangzhou Institute of Geochemistry
2016-2024
Xi'an University of Technology
2024
Chinese Academy of Sciences
2016-2024
University of Chinese Academy of Sciences
2016-2024
Abstract. Sulfur dioxide (SO2) can enhance the formation of secondary aerosols from biogenic volatile organic compounds (VOCs), but its influence on aerosol anthropogenic VOCs, particularly complex mixtures like vehicle exhaust, remains uncertain. Gasoline exhaust (GVE) and SO2, a typical pollutant coal burning, are directly co-introduced into smog chamber, in this study, to investigate (SOA) sulfate through photooxidation. New particle was enhanced, while substantial formed oxidation SO2...
Abstract. Intermediate-volatility organic compounds (IVOCs) emitted from vehicles are important precursors to secondary aerosols (SOAs) in urban areas, yet vehicular emission of IVOCs, particularly on-road fleets, is poorly understood. Here we initiated a field campaign collect IVOCs with sorption tubes at both the inlet and outlet busy tunnel (>30 000 per day) south China for characterizing emissions vehicles. The average factor (EFIVOCs) was measured be 16.77±0.89 mg km−1 (average ±95 %...
Nitrous acid (HONO) is an important photochemical precursor to hydroxyl radicals particularly in urban atmosphere, yet its primary emission and secondary production are often poorly constrained. Here, we measured HONO nitrogen oxides (NOx) at both the inlet outlet a busy tunnel (>30 000 vehicles per day) south China. Multiple linear regression revealed that 73.9% of inlet–outlet incremental concentration was explained by NO2 surface conversion, while rest directly emitted from with average...
Abstract Intermediate‐volatility organic compounds (IVOCs) are among the most important precursors to secondary aerosol (SOA), yet their sources and contributions SOA in ambient air poorly constrained. In this study, IVOCs were collected with sorption tubes a coastal city southern China during September–October 2019 analyzed by gas chromatography‐mass selective detector after thermo‐desorption. The measured average concentration of was 25.0 ± 0.95 μg m −3 (mean 95% C.I.), residual unresolved...
Abstract The light absorption enhancement (E abs ) of black carbon (BC) coated with non‐BC materials is crucial in the assessment radiative forcing, yet its evolution during photochemical aging plumes from biomass burning, globe's largest source BC, remains poorly understood. In this study, open burning corn straw were introduced into a smog chamber to explore E aging. BC was measured and without coating by using thermodenuder, while size distributions aerosols composition also monitored....
This paper proposes an adaptive predefined-time accurate anti-unwinding attitude controller for a spacecraft with uncertain inertia. The novelty of the proposed algorithm lies in that error is regulated to exact zero after predefined settling time, which explicit parameter control algorithm. A time mapping function containing introduced, thus transforming scale original system. Then composite barrier Lyapunov constructed avoid unwinding phenomenon process, and backstepping designed based on...
Abstract Organic acids are abundant aerosol components that impact the hygroscopicity and multiphase processes of particulate matter, yet their changing compositions sources poorly understood. In this study, filter‐based PM 2.5 samples were collected concurrently at three sites (urban, rural, coastal) during summer winter 2018 in megacity Guangzhou, south China, to determine organic including C 9 –C 32 fatty acids, 4 10 dicarboxylic aromatic acids. On average, total concentrations speciated...
Abstract. Sulfur dioxide (SO2) can enhance the formation of secondary aerosols from biogenic volatile organic compounds (VOCs), but its influence on aerosol anthropogenic VOCs, particularly complex mixtures like vehicle exhausts, is still poorly understood. Here we directly co-introduced gasoline vehicles exhausts (GVE) and SO2, a typical pollutant coal burning, into smog chamber to investigate (SOA) sulfate through photooxidation. In presence high concentration new particle was enhanced...
Nitrated aromatic compounds (NACs) are important components of brown carbon (BrC), and their health climate effects wide concern. Biomass burning is a major contributor to NACs in the atmosphere, yet emitted from biomass poorly constrained. In this study particulate open corn straws were characterized terms compositions, light absorption toxic equivalents. 1, 6-dinitropyrene was most abundant species among measured nitropolycyclic hydrocarbons (NPAHs) with share 13.4% total NPAHs, while...