Characteristics of fine particles from incense burning at temple premises of Kathmandu Valley, Nepal DOI

Shila Maskey,

Jasmita Khadgi, Nisha Shrestha

et al.

Environmental Monitoring and Assessment, Journal Year: 2023, Volume and Issue: 195(11)

Published: Oct. 27, 2023

Language: Английский

Sulfate Formation by Photosensitization in Mixed Incense Burning–Sodium Chloride Particles: Effects of RH, Light Intensity, and Aerosol Aging DOI
Rongzhi Tang, Ruifeng Zhang,

Jialiang Ma

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(28), P. 10295 - 10307

Published: July 7, 2023

Elevated particulate sulfate concentrations have been frequently observed in coastal areas when air masses are influenced by continental emissions, especially combustion sources like biomass burning. We studied the SO2 uptake laboratory-generated droplets containing incense smoke extracts and sodium chloride (IS–NaCl) under irradiation found enhanced production over pure NaCl droplets, attributable to photosensitization induced constituents IS. Low relative humidity high light intensity facilitated formation increased coefficient IS–NaCl particles. Aging of IS particles further production, secondary oxidant promoted proportions nitrogen-containing CHN oxygen- CHON species air. Experiments using model compounds syringaldehyde, pyrazine, 4-nitroguaiacol verified enhancements formation. This work provides experimental evidence via triggered multiphase oxidation processes Our results can shed on possible interactions between sea salt burning aerosols enhancing production.

Language: Английский

Citations

11
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

3
Biomass-burning organic aerosols as a pool of atmospheric reactive triplets to drive multiphase sulfate formation DOI Creative Commons
Zhancong Liang, Liyuan Zhou,

Yuqing Chang

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(51)

Published: Dec. 13, 2024

Biomass-burning organic aerosol(s) (BBOA) are rich in brown carbon, which significantly absorbs solar irradiation and potentially accelerates global warming. Despite its importance, the multiphase photochemistry of BBOA after light absorption remains poorly understood due to challenges determining oxidant concentrations reaction kinetics within aerosol particles. In this study, we explored photochemical reactivity particles S(IV) oxidation sulfate. We found that sulfate formation under is predominantly driven by photosensitization involving triplet excited states ( 3 * ) instead iron, nitrate, photochemistry. Rates three orders magnitude higher than those observed bulk solution, primarily fast interfacial reactions. Our results highlight chemistry can greatly contribute sulfate, as an example secondary pollutants. Photosensitization will likely become increasingly crucial intensified wildfires.

Language: Английский

Citations

1
Characteristics of fine particles from incense burning at temple premises of Kathmandu Valley, Nepal DOI

Shila Maskey,

Jasmita Khadgi, Nisha Shrestha

et al.

Environmental Monitoring and Assessment, Journal Year: 2023, Volume and Issue: 195(11)

Published: Oct. 27, 2023

Language: Английский

Citations

2