A5061279277- Hydrocarbon exploration and reservoir analysis
- Petroleum Processing and Analysis
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Atmospheric Ozone and Climate
- Isotope Analysis in Ecology
- Geochemistry and Elemental Analysis
- Toxic Organic Pollutants Impact
- Geochemistry and Geologic Mapping
- Hydraulic Fracturing and Reservoir Analysis
- Paleontology and Stratigraphy of Fossils
- NMR spectroscopy and applications
- Geological Studies and Exploration
- Enhanced Oil Recovery Techniques
- Geology and Paleoclimatology Research
- Air Quality and Health Impacts
- Marine and coastal ecosystems
- Per- and polyfluoroalkyl substances research
- Thermochemical Biomass Conversion Processes
- Advanced Chemical Sensor Technologies
- Spectroscopy and Laser Applications
- Coal and Its By-products
- Air Quality Monitoring and Forecasting
- Water Quality Monitoring and Analysis
Guangzhou Institute of Geochemistry
2014-2024
Chinese Academy of Sciences
2014-2024
Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality
2021
Institute of Earth Environment
2014
Microplastics are readily accumulated in coastal sediments, where active sulfur (S) cycling takes place. However, the effects of microplastics on S sediments and their underlying mechanisms remain poorly understood. In this study, transformation patterns different species mangrove amended with associated microbial communities were investigated using stable isotopic analysis metagenomic sequencing. Biodegradable poly(lactic acid) (PLA) treatment increased sulfate (SO42–) reduction to yield...
Brown carbon (BrC) fractions, including water-soluble organic (WSOC), humic-like substances (HULISw), alkaline soluble (ASOC), and methanol (MSOC) were extracted from particles emitted the residential combustion of coal with different geological maturities. The abundances light absorption properties these BrC fractions comprehensively studied. results showed that constituents fraction varied greatly extraction solvent, accounting for 4.3%-46%, 2.3%-23%, 3.2%-14%, 76%-98% total content in...
Water-soluble organic compounds (WSOC) and methanol-soluble (MSOC) in smoke particles emitted from residential coal combustion were characterized by ultrahigh-resolution mass spectrometry. The results showed that the molecular compositions of WSOC MSOC are different. S-containing (CHOS CHONS) found to be dominant components (65-87%) WSOC, whereas CHO CHON make a great contribution (79-96%) samples. It is worth noting greater abundance was produced compared biomass burning atmospheric also...
N-containing organic compounds (NOCs) in humic-like substances (HULIS) emitted from biomass burning (BB) and coal combustion (CC) were characterized by ultrahigh-resolution mass spectrometry the positive electrospray ionization mode. Our results indicate that NOCs include CHON+ CHN+ groups, which are detected as a substantial fraction both BB- CC-derived HULIS, suggest not only BB but also CC is potential important source of atmosphere. The mainly consist reduced nitrogen with other...
Abstract. Biomass burning (BB) and coal combustion (CC) are important sources of brown carbon (BrC) in ambient aerosols. In this study, six biomass materials five types were combusted to generate fine smoke particles. The BrC fractions, including water-soluble organic (WSOC), humic-like substance (HULIS-C), methanol-soluble (MSOC), subsequently fractionated, their optical properties chemical structures then comprehensively investigated using UV–visible spectroscopy, proton nuclear magnetic...
Abstract. Three-dimensional excitation–emission matrix (EEM) fluorescence spectroscopy is an important method for the identification of occurrence, chemical composition, and source atmospheric chromophores. However, current knowledge on interpretation fluorescent components mainly based aquatic dissolved organic matter might not be applicable to samples. Therefore, this study comprehensively investigated EEM data different types strong light-absorbing compounds, water-soluble (WSOM) in...
Abstract. Water-soluble humic-like substances (HULIS) absorb light in near-UV and visible wavelengths exert significant influence on the atmospheric environment climate. However, knowledge HULIS evolution during haze bloom-decay process is limited. Herein, PM2.5 samples were obtained a winter event Guangzhou, China, absorption molecular composition of investigated by UV–Vis spectrophotometry ultrahigh-resolution mass spectrometry. Compared with clean days, coefficients (Abs365) days...
Abstract. In recent years low molecular weight alkylamines have been recognized to play an important role in particle formation and growth the lower atmosphere. However, major uncertainties are associated with their atmospheric processes, sources sinks, mostly due lack of ambient measurements difficulties accurate quantification at trace level. this study, we present evaluation optimization two analytical approaches, i.e., gas chromatography–mass spectrometry (GC-MS) ion chromatography (IC),...