The effect of continental aerosols on cloud-rain transition processes in winter based on aircraft observations DOI Creative Commons
Shuo Wang, Xin Zhang,

Dianguo Zhang

et al.

Atmospheric Research, Journal Year: 2024, Volume and Issue: unknown, P. 107749 - 107749

Published: Oct. 1, 2024

Language: Английский

Validation of cantilever-enhanced photoacoustic particle-size-resolved light absorption measurement using nigrosin reference particles and Mie modelling DOI Creative Commons
Joel Kuula, Juho Karhu, Tommi Mikkonen

et al.

Aerosol Research, Journal Year: 2025, Volume and Issue: 3(1), P. 1 - 13

Published: Jan. 13, 2025

Abstract. Particle light absorption enhancement, also known as the lensing effect, is a complex phenomenon where particles undergo optical transformation they age. This process influenced by several factors, including particle size. To investigate this study introduces and validates novel method for size-resolved measurements using nigrosin model system. The combines three-wavelength cantilever-enhanced photoacoustic spectrometer (CEPAS) with differential mobility analyser (DMA) to achieve particle-size-resolved measurements. Nigrosin, well-characterised, spherically shaped, water-soluble material, was selected demonstrate feasibility precision of approach. system showed strong agreement (R2>0.94) Mie-modelled absorption, confirming its reliability. While broader motivation work lies in advancing techniques studying ageing, coating, enhancement black carbon other atmospheric aerosols, present serves foundational step validating methodology controlled simplified context. Future studies will expand application systems, coated aggregated particles, explore phenomena such enhancement.

Language: Английский

Citations

1
The Role of Synthesis Methods of Ceria-Based Catalysts in Soot Combustion DOI Creative Commons
Gabriela Grzybek, Andrzej Wójtowicz, Piotr Legutko

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(2), P. 358 - 358

Published: Jan. 17, 2025

The removal of soot particles via high-performance catalysts is a critical area research due to the growing concern regarding air pollution. Among various potential suitable for oxidation, cerium oxide-based materials have shown considerable promise. In this study, CeO2 samples obtained using range preparation methods (including hydrothermal synthesis (HT), sonochemical (SC), and hard template (TS)) were tested in combustion. They compared commercially available material (COM). All synthesized ceria thoroughly characterized XRD, RS, UV/Vis-DR, XPS, H2-TPR, SEM, TEM techniques. As confirmed current every sample can be used as an effective oxidation catalyst, with temperature 50% conversion not exceeding 400 °C tight contact mode. A strong correlation was observed between catalysts' Ce3+ concentration activity, higher levels leading improved performance. These findings underscore importance optimizing ceria-based environmental applications.

Language: Английский

Citations

1
Variability in morphology of soot particles during non-cloud and in-cloud processes DOI
Yuanyuan Wang, Liang Xu, Zexuan Zhang

et al.

Atmospheric Environment, Journal Year: 2024, Volume and Issue: 326, P. 120489 - 120489

Published: March 28, 2024

Language: Английский

Citations

4
Insights Into Formation and Aging of Secondary Organic Aerosol From Oxidation Flow Reactors: A Review DOI
Zijun Zhang,

Weiqi Xu,

Andrew T. Lambe

et al.

Current Pollution Reports, Journal Year: 2024, Volume and Issue: 10(3), P. 387 - 400

Published: April 16, 2024

Language: Английский

Citations

4
Absorption properties of black carbon and sulfate aerosol particles at short wavelengths DOI
Qianjun Mao,

Yunlu Tan

Atmospheric Pollution Research, Journal Year: 2025, Volume and Issue: 16(3), P. 102405 - 102405

Published: Jan. 5, 2025

Language: Английский

Citations

0
Physicochemical Characteristics of Individual Indoor Airborne Particles in the High Lung Cancer Rate Area in Xuanwei, China DOI Creative Commons
Ying Hu, Longyi Shao, Kelly BéruBé

et al.

Atmosphere, Journal Year: 2025, Volume and Issue: 16(2), P. 187 - 187

Published: Feb. 6, 2025

Emissions from domestic coal burning are generally recognized as the cause of lung cancer epidemic in Xuanwei City, Yunnan Province, China. To examine physicochemical characteristics airborne particles emitted this locally sourced coal, PM2.5 samples were collected Hutou village which has high levels cancer, and Xize located approximately 30 km without cases. Transmission Electron Microscopy-Energy Dispersive X-ray (TEM-EDX) analysis was employed to study physiochemical features chemistry individual particles. Sulfur silica most abundant elements found both two villages. Fewer aerosol compared with village. Based on morphologies chemical compositions, can be classified into five types including composite (38.6%); organic, soot, tar balls, biologicals (28.3%); sulfate (14.1%); fly ash (9.8%); minerals (9.2%). The size range 0.4–0.8 μm while that is 0.7–0.8 μm. Composite common all ranges. percentage shows peaks small (0.1–0.2 μm) large ranges (2–2.3 an even distribution Core-shell typical particles, solid ‘core’ consisting materials such or mineral grains, shell surface layer being adhering soluble compound sulfates organics. heterogeneous reactions acidic liquid layers produce core-shell structures. Typically, equivalent diameter 0.5–2.5 μm, averaging 1.6 ratio usually between 0.4 0.8, average 0.6. Regardless sizes relatively ratios imply a less aging state, suggests recently formed. Once coal-burning inhaled human deep lung, they damage cells harm health.

Language: Английский

Citations

0
Multi-objective Bayesian Optimization for the Retrieval of Aggregated Aerosol Structures from Microscopic Images DOI
Abhishek Singh, Saumya Ranjan Jena, Abhishek Gupta

et al.

Journal of Aerosol Science, Journal Year: 2025, Volume and Issue: unknown, P. 106556 - 106556

Published: March 1, 2025

Language: Английский

Citations

0
Pyrotechnic impact of Diwali 2023 on black carbon and aerosol levels in Taj City, India: Relative endangerments and meteorological influences DOI

Vaishnav Bartaria,

Ashok Kumar Jangid, Ranjit Kumar

et al.

Urban Climate, Journal Year: 2025, Volume and Issue: 61, P. 102386 - 102386

Published: March 22, 2025

Language: Английский

Citations

0
Inversion of the global carbonaceous aerosol components (CACs) based on ground-based remote sensing of AERONET DOI Creative Commons
Zhuolin Yang, Ying Zhang,

Yisong Xie

et al.

Environment International, Journal Year: 2025, Volume and Issue: unknown, P. 109432 - 109432

Published: April 1, 2025

Language: Английский

Citations

0
Radiative cooling in New York/New Jersey metropolitan areas by wildfire particulate matter emitted from the Canadian wildfires of 2023 DOI Creative Commons
Georgios A. Kelesidis, Constantinos Moularas, Hooman Parhizkar

et al.

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: April 21, 2025

Wildfire particulate matter from Canadian forest fires significantly impacted the air quality in northeastern United States during summer of 2023. Here, we used real-time and time-integrated instrumentation to characterize physicochemical properties radiative effects wildfire reaching metropolitan areas New Jersey/ York this extreme incident. The forcing -352.4 W/m2 derived here based on measured optical explains, some extent, ground level temperature reduction about 3 °C observed City Such negative densely populated megacities may limit natural ventilation, increase residence time background pollutants, exacerbating public health risks. This study highlights importance their potential implications for climate, health.

Language: Английский

Citations

0