A5100376636- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
- Air Quality and Health Impacts
- Maritime Transport Emissions and Efficiency
- Wind and Air Flow Studies
- Aerodynamics and Fluid Dynamics Research
- Air Quality Monitoring and Forecasting
- Geological and Geochemical Analysis
- Environmental Policies and Emissions
- earthquake and tectonic studies
- Atmospheric and Environmental Gas Dynamics
- Arsenic contamination and mitigation
- Atmospheric Ozone and Climate
- Fire effects on ecosystems
- Radioactive element chemistry and processing
- Thermochemical Biomass Conversion Processes
- Electrochemical Analysis and Applications
- Advanced Cellulose Research Studies
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Material Properties and Applications
- Urban Transport and Accessibility
- Aerogels and thermal insulation
- Membrane Separation and Gas Transport
- Death Anxiety and Social Exclusion
Fudan University
2021-2025
Institute of Earth Environment
2024-2025
Chinese Academy of Sciences
2017-2025
Jilin University
2017-2024
Taiyuan University of Technology
2024
Shanghai Institute of Pollution Control and Ecological Security
2022-2023
Sumy National Agrarian University
2023
Ludong University
2023
Peking University
2022
Tsinghua University
2022
Residential solid fuel combustion (RSFC) is a key cause of air pollution in China. In these serial studies, field measurements RSFC from 166 rural households eastern China were conducted to update the database emission factors (EFs) and chemical profiles gaseous particulate organic pollutants, present study focuses on intermediate volatile compounds (IVOCs), which are precursors secondary aerosol (SOA). The results show that averaged EFs IVOCs (EFIVOC) for crop straw, fuelwood, coal 550.7 ±...
Emission factors and inventories of black carbon (BC) aerosols are crucial for estimating their adverse atmospheric effect. However, it is imperative to separate BC emissions into char soot subgroups due significantly different physicochemical properties potential effects. Here, we present a substantial dataset emission derived from field laboratory measurements. Based on the latest results char-to-soot ratio, further reconstructed years 1960-2017 in China. Our findings indicate that...
The arid region of northwest China provides a unique terrestrial ecosystem to identify the response vegetation activities natural and anthropogenic changes. To reveal influences climate factors on vegetation, Normalized Difference Vegetation Index (NDVI), data, land use cover change (LUCC) maps were used for this study. We analyzed spatiotemporal NDVI during 2000–2015. A partial correlation analysis suggested that contribution precipitation (PRE) temperature (TEM) 95.43% observed greening...
This study investigates the effects of wind direction on airflow and pollutant dispersion inside a long street canyon using computational fluid dynamics (CFD). A 3D CFD model for predicting flow in is first developed FLUENT code then validated against tunnel experiments. Then, traffic an isolated with street-length-to-building-height ratio 10 are numerically simulated seven directions (α = 0°, 15°, 30°, 45°, 60°, 75° 90°, where α angle between approaching axis). The results demonstrate that...
The lack of emission data for ocean-going vessels (OGVs) and the recent fuel switching make it urgent to enhance onboard measurement ship emissions, especially intermediate volatile organic compounds (IVOCs). This study focused on IVOC characteristics formation pathways three OGVs under various engine conditions (power load) oils (heavy oil (HFO) versus marine gas (MGO)). results showed that (1) factors (EFIVOC) increased with power were higher MGO (1494.4 ± 421.7 mg/kg) than HFO (1830.5...
The use of biodiesel as an alternative to diesel remains controversial because its potential impact on organic matter emissions. Herein, intermediate-volatility compounds (IVOCs) from five agricultural machines (AMs) using three types fuels (pure (B0), mixed with 5 and 20% (B5 B20), respectively) were collected analyzed. following results obtained: (1) Reasonable ratios reduced IVOC average emission factors IVOCs (EFIVOCs) B5-fueled AMs 485.8 ± 272.9 mg/kg fuel, 24.2% reduction that...
Two-dimensional numerical simulations were performed using the FLUENT code to investigate impacts of shape and height building roofs on flow pollutant dispersion inside an isolated street canyon. The model was validated against wind tunnel measured data. Five different roof shapes (vaulted, trapezoidal, slanted, upward wedge-shaped, downward wedge-shaped roofs) three heights ( = 1/6, 1/3, 1/2, where is H height) considered in simulations. results revealed that vortical structure distribution...
δ18O is widely used to track nitrate (NO3-) formation but overlooks NO3 radical reactions with hydrocarbons (HCs), particularly in heavily emitting hazes. This study introduces high-time resolution Δ17O-NO3- as a powerful tool quantify NO3- during five hazes three cities. Results show significant differences between and δ18O-NO3- identifying formation. results suggested N2O5 hydrolysis (62.0-88.4%) the major pathway of formation, while shows contributions NO2 + OH (17.7-66.3%), HC...
Ship emissions are a significant source of air pollution, and the primary policy to control is fuel oil quality improvement. However, impact this on particle size distribution composition characteristics remains unclear. Measurements were conducted nine different vessels (ocean-going vessels, coastal cargo ships, inland ships) determine upgrading (S < 0.1% m/m marine gas (MGO) vs S 0.5% heavy (HFO)) elemental carbon (EC) polycyclic aromatic hydrocarbons (PAHs) emitted by ships. (1) Fuel...
Abstract. Mandatory use of low-sulfur fuel according to the global sulfur limit regulation has reduced emissions SO2 and particulate matter (PM) significantly on ships, it also leads a very large uncertainty in volatile organic compound (VOC) emissions. Therefore, an on-board test VOCs from nine typical cargo ships with fuels China was carried out this study. Results showed that emission factor (EFVOCs) varied largely 0.09 3.01 g kg−1 fuel, domestic coastal (CCSs) having highest level,...
Abstract Sulfate (SO 4 2− ) sources are unclear leading to the underestimation of its concentration in model. Hourly resolution δ 34 S‐SO 2 and values three haze episodes (EP1‐EP3) were synchronously collected for first time quantify influence S fractionation from emission (e.g., coal combustion) SO atmospheric oxidation on /SO source apportionment. After considering combustion oxidation, reasonable logical contributions obtained, showing highly consistent with that Positive Matrix...
A two-dimensional numerical model for simulating airflow and pollutant dispersion inside an urban street canyon was first developed using the FLUENT code, then it validated against a wind tunnel experiment. Then effects of strength position sources on within were investigated numerically. The results showed that dimensionless concentrations independent from source strength. also revealed distributions with two-lane road influenced significantly by positions two sources: 1) closer to center...