A5004062618- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Freezing and Crystallization Processes
- Cryospheric studies and observations
- Air Quality and Health Impacts
- nanoparticles nucleation surface interactions
- Planetary Science and Exploration
- Astro and Planetary Science
- Marine and coastal ecosystems
- Air Quality Monitoring and Forecasting
- Arctic and Antarctic ice dynamics
- Chemical Thermodynamics and Molecular Structure
- Icing and De-icing Technologies
- Space Exploration and Technology
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Advanced Chemical Physics Studies
- Allergic Rhinitis and Sensitization
- Clay minerals and soil interactions
- Odor and Emission Control Technologies
- Crystallization and Solubility Studies
- Groundwater and Isotope Geochemistry
- Lichen and fungal ecology
Guangzhou Institute of Geochemistry
2019-2024
Chinese Academy of Sciences
2019-2024
University of Chinese Academy of Sciences
2019-2024
Deliquescence relative humidity (DRH) and efflorescence (ERH), the two parameters that regulate phase state hygroscopicity of substances, play important roles in atmospheric science many other fields. A large number experimental studies have measured DRH ERH values compounds with relevance, but these not yet been summarized a comprehensive manner. In this work, we develop for first-of-its-kind database which compiles 110 (68 inorganics 42 organics) previous studies, provide preferred at 298...
Abstract. Organosulfates (OSs) are important constituents of secondary organic aerosols, but their hygroscopic properties and cloud condensation nucleation (CCN) activities have not been well understood. In this work we employed three complementary techniques to characterize interactions several OSs with water vapor under sub- supersaturated conditions. A sorption analyzer was used measure mass changes in OS samples relative humidity (RH, 0 %–90 %); among the 11 organosulfates examined, only...
Atmospheric ice nucleating substances (INSs) play a crucial role in cloud formation above -35°C, impacting radiative properties, lifetime, and the hydrological cycle. Characterizing inorganic (e.g., mineral dusts, volcanic ash, metals) organic bacterial cells, fungal spores, pollen, various biomacromolecules) INSs has typically involved: 1) single-particle analyses, which offer high resolution but require specialized equipment, 2) bulk sample treatment heat, H2O2,...
Abstract. Despite its importance, hygroscopicity of mineral dust aerosol remains highly uncertain. In this work, we investigated water adsorption and different samples at 25 ∘C, via measurement sample mass relative humidity (RH, up to 90 %) using a vapor sorption analyzer. Mineral examined (21 in total) included seven authentic from regions the world 14 major minerals contained aerosol. At % RH, ratios adsorbed dry ranged 0.0011 0.3080, largely depending on BET surface areas samples. The...
Pollen, one of the most abundant types primary biological aerosol particles, has significant impacts on human health, climate, and ecosystems. However, hygroscopicity pollen species in China remains to be unknown. In this work, we explored for first time hygroscopic properties widely found China. Six anemophilous five entomophilous (11 total) were studied, measurements conducted as a function relative humidity (RH, up 95%) at two temperatures (25 37 °C). All 11 examined show moderate...
Abstract. Soot is a crucial component of aerosols in the atmosphere. Understanding hygroscopicity soot particles important for studying their role as cloud condensation nuclei (CCN) well chemical behavior and atmospheric lifetime. However, there still lack comprehensive understanding regarding factors that determine hygroscopic properties soot. In this work, generated from different types fuel combustion aged with SO2 varying durations was measured by vapor sorption analyzer. Various...
Abstract. Hygroscopicity largely determines phase state, chemical reactivity, optical properties, and cloud nucleation activities of aerosol particles, thus significantly affecting their impacts on visibility, atmospheric chemistry, climate. In the last 20 years, a large number field studies have investigated hygroscopicity tropospheric aerosols in China under subsaturated supersaturated conditions. Aerosol measurements are reviewed this paper: (1) comprehensive summary critical discussion...
Abstract. Atmospheric ice nucleation plays an important role in modulating the global hydrological cycle and atmospheric radiation balance. To date, few comprehensive field observations of nuclei have been carried out at high-altitude sites, which are close to height mixed-phase cloud formation. In this study, we measured concentration ice-nucleating particles (INPs) immersion freezing mode summit Changbai Mountains (2623 m above sea level), northeast Asia, summer 2021. The cumulative number...
Abstract Heterogeneous reaction of NO 2 with CaCO 3 , an abundant and reactive component in mineral dust aerosol, was investigated this work at different relative humidifies (RH, up to 80%), using a fixed‐bed reactor. Ion chromatograph vapor sorption analyzer were employed measure changes particulate nitrate water time (up 24 h). When concentration ∼10 ppmv (∼2.5 × 10 14 molecule cm −3 ), showed very low reactivity toward <1% RH, γ (NO ) estimated be <2 −8 ; consequently, no...
Ice nucleating substances (INSs) influence the properties and frequencies of ice mixed-phase clouds in atmosphere, hence, climate hydrological cycle. INSs can be classified as inorganic (e.g., mineral dust, volcanic ash) or organic bacterial cells, cell-free proteins). While both INS classes have been studied laboratory, amounts atmosphere are still poorly constrained. Here, we demonstrate a new method for separating quantifying INSs. First, suspensions were separated into high-density...
Evaporite salts from saline lakes and playas play active roles in the atmospheric cycles climate system, especially context of changing climate. This study investigates chemical, isotopic, hygroscopic characteristics surface salt samples two lakes, i.e., Mang&#8217;ai Dalangtan&#160;(MA DLT),&#160;in Qaidam Basin. Samples both shared similar ionic compositions, with brines rich Cl-, Mg2+, Na+, lakebed being primarily NaCl-based. Disparities composition between MA DLT crust were...
Ice nucleating substances (INSs) influence the properties and frequencies of ice mixed-phase clouds in atmosphere, hence, climate hydrological cycle. INSs can be classified as inorganic (e.g., mineral dust, volcanic ash) or organic bacterial cells, cell-free proteins). While both INS classes have been studied laboratory, amounts atmosphere are still poorly constrained. Here, we demonstrate a new method for separating quantifying INSs. First, suspensions were separated into high-density...
Evaporite salts from saline lakes and playas play active roles in the atmospheric cycles climate system, especially context of changing climate. This study investigates chemical, isotopic, hygroscopic characteristics surface salt samples two lakes, i.e., Mang'ai Dalangtan (MA DLT), Qaidam Basin. Samples both shared similar ionic compositions, with brines rich Cl–, Mg2+, Na+, lakebed being primarily NaCl-based. Disparities composition between MA DLT crust were observed. Isotopic analyses...
Ice nucleating substances (INSs) influence the properties and frequencies of ice mixed-phase clouds in atmosphere and, hence, climate hydrological cycle. INSs can be classified as inorganic (e.g., mineral dust, volcanic ash) or organic bacterial cells, cell-free proteins). While both INS classes have been studied laboratory, amounts are still poorly constrained. Here, we demonstrate a new method for separating quantifying INSs. First, suspensions were separated into high-density isolate...
Abstract Mineral dust is one of the most abundant types ice nucleating particles in atmosphere. During atmospheric transport, mineral can become coated with inorganic and organic solutes, which impact their nucleation activity. Aminium cations formed from amines are type solute that coat atmosphere, but effects on activity have not been studied. We investigated primary, secondary, tertiary aminium methyl ethyl groups, as well ammonium cations, K‐feldspar, an important dust, immersion...
Abstract. Hygroscopicity largely determines phase state, chemical reactivity, optical properties and cloud nucleation activities of aerosol particles, thus significantly affecting their impacts on visibility, atmospheric chemistry climate. In the last twenty years a large number field studies have investigated hygroscopicity tropospheric aerosols in China under sub- super-saturated conditions. Aerosol measurements are reviewed this paper: 1) comprehensive summary critical discussion is...
Abstract. Organosulfates (OS) are important constituents of secondary organic aerosols, but their hygroscopic properties and cloud condensation nucleation (CCN) activities have not been well understood. In this work we employed three complementary techniques to characterize interactions several OS with water vapor under sub- supersaturated conditions. A sorption analyzer was used measure mass changes samples RH (0–90 %); among the 11 organosulfates examined, only sodium methyl sulfate...
Evaporite salts from saline lakes and playas play active roles in the atmospheric cycles climate system, especially context of changing climate. Similar processes also occurred on Mars, where large water bodies dried up formed then salt evaporites deposits. In this study, various samples (brines, lakebed salts, crust playa surface a series collected at different depths) were two Martian analogue sites (Mang&#8217;ai Dalangtan, MA DLT) Qaidam Basin. The measured for their ionic...
Abstract. Atmospheric ice nucleation plays an important role in modifying the global hydrological cycle and atmospheric radiation balance. To date, few comprehensive field observations of nuclei have been carried out at high-altitude sites, which is close to height mixed-phase cloud formation. In this study, we measured concentrations ice-nucleating particles (INPs) immersion freezing mode summit Changbai Mountain (2623 m above sea level), Northeast Asia, summer 2021. The cumulative number...