A5100670323- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Allergic Rhinitis and Sensitization
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Indoor Air Quality and Microbial Exposure
- Lichen and fungal ecology
- Toxic Organic Pollutants Impact
- Coal and Its By-products
- Microplastics and Plastic Pollution
- Atmospheric Ozone and Climate
- Surface and Thin Film Phenomena
- Radioactivity and Radon Measurements
- Heavy metals in environment
- Electron and X-Ray Spectroscopy Techniques
- Plant Water Relations and Carbon Dynamics
- Contact Dermatitis and Allergies
- Energy and Environment Impacts
- Recycling and Waste Management Techniques
- Atmospheric and Environmental Gas Dynamics
- Insect and Pesticide Research
- Nanoparticles: synthesis and applications
- Graphene and Nanomaterials Applications
- Molecular Sensors and Ion Detection
- Meteorological Phenomena and Simulations
Shanghai University
2016-2025
Guangxi University
2025
Chinese Academy of Sciences
2009-2025
Institute of Geology and Geophysics
2025
University of Chinese Academy of Sciences
2025
University College London
2021
Peking University
1992-2019
Energy Foundation
2016
State Key Laboratory of Remote Sensing Science
2016
Institute of Remote Sensing and Digital Earth
2016
Abstract. Volatile organic compounds (VOCs) were measured by two online instruments (GC-FID/MS and PTR-MS) at a receptor site on Changdao Island (37.99° N, 120.70° E) in eastern China. Reaction with OH radical dominated chemical losses of most VOC species during the campaign. A photochemical-age-based parameterization method is used to calculate emission ratios quantify evolution ambient VOCs. The calculated hydrocarbons agree well those obtained from inventory data, but determined...
Abstract. Elevated ground-level ozone (O3), reflecting atmospheric oxidative capacity, are of increasing concern. High levels total oxidants (Ox= O3 + NO2) have been persistently observed as a feature Beijing's air pollution. Beijing is well-known megacity requiring the enforcement stringent quality controls rapid economic growth continues. To evaluate effect in recent years, ground-based on-line measurements at an urban site were conducted summer and variations with simultaneous changes NOx...
Abstract. Carbonyl compounds are important intermediates in atmospheric photochemistry. To explore the relative contributions of primary and secondary carbonyl sources, carbonyls other volatile organic (VOCs) were measured at an urban site both winter summer Beijing. The positive matrix factorization (PMF) model was used for source apportionment VOCs. As VOCs undergo photochemical processes atmosphere, such may interfere with factor identification, relationships between resolved PMF factors...
There has been concern regarding risks from inhalation exposure to nanoparticles (NPs). The large number of particles requiring testing means that alternative approaches animal are needed.We set out determine whether short-term in vitro assays assess intrinsic oxidative stress potential and membrane-damaging potency a panel metal oxide NPs can be used predict their inflammogenic potency.For NPs, we investigated free radical generation, activity an extracellular environment, cytotoxicity lung...
Abstract. In conjunction with hosting the 2008 Beijing Olympics, municipal government implemented a series of stringent air quality control measures. To assess impacts on variation ambient non-methane hydrocarbons (NMHCs), whole was sampled by canisters at one urban site and two suburban sites in Beijing, 55 NMHC species were quantified gas chromatography equipped quadrupole mass spectrometer flame ionization detector (GC/MSD/FID) as parts field Campaign for Olympic Games Air Quality program...
Abstract. Understanding the sources of volatile organic compounds (VOCs) is essential for ground-level ozone and secondary aerosol (SOA) abatement measures. We made VOC measurements at 27 sites online observations an urban site in Beijing from July 2009 to January 2012. Based on these measurement data, we determined spatial temporal distribution VOCs, estimated their annual emission strengths based ratios relative carbon monoxide (CO), quantified contributions various using chemical mass...
The development of nanotechnology has spurred concerns about the health effects exposure to nanoparticles (NPs) and ultrafine particles (UFPs). Toxicological data on NPs UFPs may provide evidence support regulations reduce risk particle exposure. We tried fundamental determine differences in cytotoxicity induced by ambient engineered metal oxide (ZnO, NiO, CeO2).UFPs were sampled using a nano micro-orifice uniform deposit impactor. Physicochemical characterization studied scanning electron...
Abstract. Using a GC/FID/MS system, we analyzed the mixing ratio of 16 halocarbon species in more than 100 air samples collected 2004 from Pearl River Delta (PRD) region southern China. The results revealed that there are elevated ratios for most halocarbons, especially HClC = CCl2 (trichloroethylene, TCE), CH2Cl2 (dichloromethane, DCM), CH3 Br (bromomethane), HCFC-22, CHCl3 (trichloromethane), CCl4 (tetrachloromethane), Cl2C (perchloroethylene, PCE), CH3CCl3 (methyl chloroform, MCF), and...
Abstract. Oxygenated volatile organic compounds (OVOCs) are important products of the photo-oxidation hydrocarbons. They influence oxidizing capacity and ozone-forming potential atmosphere. In summer 2008, 2 months emission restrictions were enforced in Beijing to improve air quality during Olympic Games. Observational evidence reported related studies that these control measures efficient reducing concentrations primary anthropogenic pollutants (CO, NOx non-methane hydrocarbons, i.e.,...
Abstract. Non-methane hydrocarbons (NMHCs) play a critical role in the photochemical production of ozone (O3) and organic aerosols. Obtaining an accurate understanding on temporal trends NMHC emissions is essential for predicting air quality changes evaluating effectiveness current control measures. In this study, we evaluated anthropogenic during August Beijing based ambient measurements selected summer periods at urban site from 2002 to 2013. contrast results most recent inventory...
A quantitative low-energy electron diffraction (LEED) intensity analysis shows that the room-temperature reaction of Pd atoms with a Cu{001} surface produces alloy, Cu{100}c(2\ifmmode\times\else\texttimes\fi{}2)-Pd, analogous to Cu{001}c(2\ifmmode\times\else\texttimes\fi{}2)-Au. The structure Cu{001}c(2\ifmmode\times\else\texttimes\fi{}2)-Pd is almost planar, located 0.02\ifmmode\pm\else\textpm\fi{}0.03 A\r{} outwards from Cu atoms, and an interlayer distance second (100% Cu) layer equal...
Slow deposition of Cu onto a clean unheated Fe{001} surface produced films with large amounts defects, but still detectable crystallinity. Low-energy electron diffraction showed that the contained regions (somewhat distorted) body-centered-cubic structure and same or nearly lattice parameter as underlying substrate. Auger-electron spectroscopy suggested crystalline were essentially pure Cu, thus allowing conclusion metastable bcc modification has been realized, consistent predictions...
Being major ornamental street trees, species of Platanus are widely planted in the Shanghai urban area. A great deal allergenic pollen is released from trees and suspended atmosphere during its flowering season, ultimately causing allergic respiratory diseases. Few papers have focused on distribution this type expression proteins. In order to investigate any differences protein following exposure gaseous particulate pollutants, a special apparatus was designed. Exposure condition (such as...