A5100680575- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- Environmental and Agricultural Sciences
- Environmental Changes in China
- Atmospheric Ozone and Climate
- Groundwater and Isotope Geochemistry
- Remote Sensing and Land Use
- Hydrology and Watershed Management Studies
- Heavy metals in environment
- Groundwater and Watershed Analysis
- Water Quality and Pollution Assessment
- Soil erosion and sediment transport
- Geological formations and processes
- Advanced Chemical Sensor Technologies
- Odor and Emission Control Technologies
- Atmospheric and Environmental Gas Dynamics
- Metal Alloys Wear and Properties
- Vehicle emissions and performance
- Membrane Separation Technologies
- Fuel Cells and Related Materials
- Coastal wetland ecosystem dynamics
- Wastewater Treatment and Nitrogen Removal
- Spectroscopy and Laser Applications
Hunan Agricultural University
2025
Queensland University of Technology
2023-2024
University of Eastern Finland
2019-2024
Central South University
2005-2024
Northeastern University
2018-2024
Hebei Normal University
2021-2024
Lanzhou University
2019-2024
Anhui University of Finance and Economics
2024
Wuyi University
2024
Humboldt-Universität zu Berlin
2024
Faster than expected Iodine species are one of only a handful atmospheric vapors known to make new aerosol particles, which play central role in controlling the radiative forcing climate. He et al. report experimental evidence from CERN Cosmics Leaving Outdoor Droplets, or CLOUD, chamber demonstrating that iodic acid and iodous rapidly form particles can compete with sulfuric pristine regions. Science , this issue p. 589
Abstract. In the present-day atmosphere, sulfuric acid is most important vapour for aerosol particle formation and initial growth. However, growth rates of nanoparticles (<10 nm) from remain poorly measured. Therefore, effect stabilizing bases, contribution ions impact attractive forces on molecular collisions are under debate. Here, we present precise rate measurements uncharged particles 1.8 to 10 nm, performed atmospheric conditions in CERN (European Organization Nuclear Research)...
Abstract. Secondary organic aerosol (SOA) is an important constituent of the atmosphere where SOA particles are formed chiefly by condensation or reactive uptake oxidation products volatile compounds (VOCs). The mass yield in particle formation, as well chemical composition and volatility particles, determined identity VOC precursor(s) conditions they experience. In this study, we used flow reactor to generate biogenic from Scots pine emissions. Mass yields, were characterized compared with...
Abstract. New particle formation (NPF) is a significant source of atmospheric particles, affecting climate and air quality. Understanding the mechanisms involved in urban aerosols important to develop effective mitigation strategies. However, NPF rates reported polluted boundary layer span more than 4 orders magnitude, reasons behind this variability are subject intense scientific debate. Multiple vapours have been postulated participate NPF, including sulfuric acid, ammonia, amines...
Abstract. Cooking emissions can potentially contribute to secondary organic aerosol (SOA) but remain poorly understood. In this study, formation of SOA from gas-phase five heated vegetable oils (i.e., corn, canola, sunflower, peanut and olive oils) was investigated in a potential mass (PAM) chamber. Experiments were conducted at 19–20 °C 65–70 % relative humidity (RH). The characterization instruments included scanning mobility particle sizer (SMPS) high-resolution time-of-flight...
Abstract Iodine is a reactive trace element in atmospheric chemistry that destroys ozone and nucleates particles. emissions have tripled since 1950 are projected to keep increasing with rising O 3 surface concentrations. Although iodic acid (HIO ) widespread forms particles more efficiently than sulfuric acid, its gas-phase formation mechanism remains unresolved. Here, CLOUD simulation chamber experiments generate iodine radicals at atmospherically relevant rates, we show iodooxy hypoiodite,...
Abstract. The formation of secondary organic aerosol (SOA) has been widely studied in the presence dry seed particles at low relative humidity (RH). At higher RH, initially can exist as wet due to water uptake by seeds well SOA. Here, we investigated SOA from photooxidation toluene using an oxidation flow reactor absence NOx under a range OH exposures on or ammonium sulfate (AS) RH 68 %. ratio yield AS that seeds, yield, decreased 1.31 ± 0.02 exposure 4.66 × 1010 molecules cm−3 s 1.01 0.01...
Ions enhance the formation rate of atmospheric aerosol particles, which play an important role in Earth’s radiative balance. Ion-induced nucleation involves stepwise accretion neutral monomers onto a molecular cluster containing ion, helps to stabilize against evaporation. Although theoretical frameworks exist calculate collision coefficients between molecules and ions, they need be experimentally confirmed, ideally under atmospherically relevant conditions around 1000 ion pairs cm−3. Here,...
Abstract. The volatility of oxidation products volatile organic compounds (VOCs) in the atmosphere is a key factor to determine if they partition into particle phase contributing secondary aerosol (SOA) mass. Thus, linking and measured composition will provide insights SOA formation its fate atmosphere. We produced α-pinene with three different levels (characterized by average oxygen-to-carbon ratio; O:C‾=0.53, 0.69, 0.96) an flow reactor. investigated isothermal evaporation clean air as...
Abstract. Secondary organic aerosols (SOAs) formed from biogenic volatile compounds (BVOCs) constitute a significant fraction of atmospheric particulate matter and have been recognized to significantly affect the climate air quality. Atmospheric SOA mass yields chemical composition result complex mixture oxidation products originating diversity BVOCs. Many laboratory field experiments studied particle formation growth in recent years. However, large uncertainty still remains regarding...
Visual localization is a fundamental machine learning problem. Absolute Pose Regression (APR) trains scene-dependent model to efficiently map an input image the camera pose in pre-defined scene. However, many applications have continually changing environments, where inference data at novel poses or scene conditions (weather, geometry) appear after deployment. Training APR on fixed dataset leads overfitting, making it fail catastrophically challenging data. This work proposes Continual...
The interplay of volatility distribution and particle viscosity governs the gas-to-particle partitioning dynamics atmospheric secondary organic aerosol (SOA) constituents. Temperature-induced shifts in both can influence evaporation behavior SOA particles. However, knowledge at low temperatures is still limited. Here, we combined isothermal measurements process modeling to explore α-pinene ozonolysis (αpinO3) photo-oxidation (αpinOH) particles under a series relative humidities (RHs) two...
Groundwater is a very important natural resource for humanity, however, the degradation of groundwater quality caused by anthropogenic activities may pose serious hazard to human health and ecosystem. In this study, 143 samples were analyzed investigate spatiotemporal variations hydrochemistry, potential risk in Jinghe River Basin, Chinese Loess Plateau. Based on mean concentrations value (MCV) over-standard rate (OSR), Basin divided into three groups: Group Ⅰ (high MCV: greater than...