A5064055729- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Atmospheric aerosols and clouds
- Air Quality Monitoring and Forecasting
- Indoor Air Quality and Microbial Exposure
- Toxic Organic Pollutants Impact
- Atmospheric and Environmental Gas Dynamics
- Plant responses to elevated CO2
- Vehicle emissions and performance
- Mercury impact and mitigation studies
- Isotope Analysis in Ecology
- Thermochemical Biomass Conversion Processes
- Marine and coastal ecosystems
- Advanced Chemical Sensor Technologies
- Hydrocarbon exploration and reservoir analysis
- Microbial Community Ecology and Physiology
- Climate variability and models
- Polar Research and Ecology
- Spectroscopy and Laser Applications
- Odor and Emission Control Technologies
- Catalytic Processes in Materials Science
- Light effects on plants
- Cancer-related molecular mechanisms research
- Smart Materials for Construction
Tianjin University
2019-2024
Prefectural University of Kumamoto
2024
Institute of Urban Environment
2011-2019
Chinese Academy of Sciences
2011-2019
Institute of Earth Environment
2012-2013
Nanjing University
2010-2012
Hankou University
2010
Thick haze plagued northeastern China in January 2013, strongly affecting both regional climate and human respiratory health. Here, we present dual carbon isotope constrained (Δ14C δ13C) source apportionment for combustion-derived black aerosol (BC) three key hotspot regions (megacities): North Plain (NCP, Beijing), the Yangtze River Delta (YRD, Shanghai), Pearl (PRD, Guangzhou) 2013. BC, here quantified as elemental (EC), is one of most health-detrimental components PM2.5 a strong warming...
Rapid warming in the Arctic has a huge impact on global environment. Atmospheric brown carbon (BrC) is one of least understood and uncertain agents due to scarcity observations. Here, we performed direct observations atmospheric BrC quantified its light-absorbing properties during 2-month circum-Arctic cruise summer 2017. Through observation-constrained modeling, show that BrC, mainly originated from biomass burning mid- high latitudes Northern Hemisphere (∼60%), can be strong agent region,...
Abstract. Brown carbon (BrC) aerosols exert vital impacts on climate change and atmospheric photochemistry due to their light absorption in the wavelength range from near-ultraviolet (UV) visible light. However, optical properties formation mechanisms of ambient BrC remain poorly understood, limiting estimation radiative forcing. In present study, fine particles (PM2.5) were collected during 2016–2017 a day/night basis over urban Tianjin, megacity northern China. Light fluorescence water...
Abstract. The interactions of metabolically active atmospheric microorganisms with cloud organic matter can alter the carbon cycle. Upon deposition, influence microbial communities in surface Earth systems. However, metabolic activities cultivable settled habitats remain less understood. Here, we cultured typical bacterial and fungal species isolated from urban atmosphere using tryptic soy broth (TSB) Sabouraud dextrose (SDB), respectively, investigated their exometabolites to elucidate...
To investigate the characteristics and sources of PM2.5 in Yangtze River Delta (YRD) region, a total 10 sampling sites were selected three major cities Shanghai, Nanjing, Ningbo regional background city Lin'an, 380 samples collected spring winter. The spatiotemporal mass concentration chemical components analyzed. Meanwhile, air clusters positive matrix factorization (PMF) source apportion model comprehensively used to identify PM2.5. winter (83.51–107.64 µg m–3) was higher than that...
Abstract. In order to better understand the molecular composition and sources of organic aerosols in Tianjin, a coastal megacity North China, ambient fine aerosol (PM2.5) samples were collected on day/night basis from November December 2016 May June 2017. The PM2.5 components, including aliphatic lipids (n-alkanes, fatty acids, alcohols), sugar compounds, photooxidation products isoprene, monoterpene, β-caryophyllene, naphthalene, toluene, was analysed using gas chromatography–mass...
This study investigates the concentrations and δ15N values of NH4+ in PM2.5 at three heights (8, 120, 260 m) on a 325 m tower urban Beijing. were lower during Parade Blue Period (August 20 to September 3, 2015) due strict air pollution control favorable meteorological conditions, while δ15N-NH4+ higher because regional transport agricultural sources (lower ratios δ15N-NH4+) was less significant. Vertical profiles increased with height decreased, indicating an enhanced contribution from high...
Peatland wildfires contribute significantly to the atmospheric release of light-absorbing organic carbon, often referred as brown carbon. In this study, we examine presence nitrogen-containing compounds (NOCs) within marine aerosols across Western Pacific Ocean, which are influenced by peatland fires from Southeast Asia. Employing ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) in electrospray ionization (ESI) positive mode, discovered that NOCs...
An online coupled regional climate and chemistry model was used to investigate the direct effects of anthropogenic aerosols (sulfate, nitrate, black carbon BC organic OC) with different mixing states over China. Three assumptions were considered, including external (EM), internal (IM, BC-core surrounded by well mixed scattering-shells) partially (PIM, 32.2% sulfate 35.5% 48.5% OC internally mixed) mixtures. Results indicated that high levels found in Southwest Central East Regional mean...
Fine particulate matter (PM2.5) exposure, especially to its organic components, induces adverse health effects on the respiratory system. However, molecular mechanisms have still not been fully elucidated. Long non-coding RNA (lncRNA) is involved in various physio-pathological processes. In this study, roles of lncRNA were investigated reveal toxicology PM2.5. Organic extracts PM2.5 from Nanjing and Shanghai cities adopted treat human bronchial epithelial cell lines (BEAS-2B A549)....
Abstract. Black carbon (BC) is the most important light-absorbing aerosol in atmosphere. However, sources of atmospheric BC aerosols are largely uncertain, making it difficult to assess its influence on radiative forcing and climate change. In this study, year-round light-absorption observations were conducted during 2014 using an aethalometer Xiamen, a coastal city Southeast China. Source apportionment was performed temporal variations characterized based both light absorption measurements...
Abstract. Biomass burning and primary biological aerosol particles account for an important part of urban aerosols. Floods studies have been conducted on the chemical compositions fine aerosols (PM2.5) in megacities where haze pollution is one severe environmental issues China. However, little known about their size distributions atmospheric boundary layer. Here, size-segregated samples were collected Beijing during clear days from April 2017 to January 2018. Three anhydrosugars, six...