Surface-enhanced Raman scattering for mixing state characterization of individual fine particles during a haze episode in Beijing, China

Chen, Hui; Duan, Fengkui; Du, Jingjing; Yin, Ranhao; Zhu, Lailai; Dong, Jing; He, Kebin; Sun, Zhenli; Wang, Suhua

doi:10.1016/j.jes.2020.12.008

Cited by 7 publications

(3 citation statements)

References 47 publications

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“…More recently, Kunihisa et al (2020) reported sensitive SERS measurement of Aitken mode particles (<100 nm) by combining a condensational growth tube sampler (CGT) and a SERS substrate for directly sampling (Kunihisa et al, 2020). The wide analytical range of particle size enables SERS to be a potentially powerful tool in studying ambient particulate matters (Steer et al, 2016;Vejpongsa et al, 2017;Chen et al, 2021).…”

Section: Enhanced Raman Spectroscopymentioning

confidence: 99%

Single-particle Raman spectroscopy for studying physical and chemical processes of atmospheric particles

et al. 2022

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Abstract. Atmospheric particles experience various physical and chemical processes and change their properties during their lifetime. Most studies on atmospheric particles, both in laboratory and field measurements, rely on analyzing an ensemble of particles. Because of different mixing states of individual particles, only average properties can be obtained from studies using ensembles of particles. To better understand the fate and environmental impacts of atmospheric particles, investigations on their properties and processes at a single-particle level are valuable. Among a wealth of analytic techniques, single-particle Raman spectroscopy provides an unambiguous characterization of individual particles under atmospheric pressure in a non-destructive and in situ manner. This paper comprehensively reviews the application of such a technique in the studies of atmospheric particles, including particle hygroscopicity, phase transition and separation, and solute–water interactions, particle pH, and multiphase reactions. Investigations on enhanced Raman spectroscopy and bioaerosols on a single-particle basis are also reviewed. For each application, we describe the principle and representative examples of studies. Finally, we present our views on future directions on both technique development and further applications of single-particle Raman spectroscopy in studying atmospheric particles.

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Section: Enhanced Raman Spectroscopymentioning

confidence: 99%

Single-particle Raman spectroscopy for studying physical and chemical processes of atmospheric particles

et al. 2022

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“…The close contact of stacked samples brings substantial uncertainty to the experiment. Therefore, smog chamber [77][78][79] and individual particle analysis methods [80][81][82][83][84] have become popular in atmospheric heterogeneous reaction research in recent years. Smog chamber and individual particle analysis methods utilize non-contacting or suspended particles, which can truly reflect the heterogeneous reaction process on the surface of particles in the actual atmospheric environment, to obtain accurate kinetic parameters that reflect the real-life conditions of the atmosphere.…”

Section: Surface Heterogeneous Reactions Of Ampmmentioning

confidence: 99%

“…The results of field observations have shown that mineral particles co-existed with both sulfate and nitrate [11,96]. Moreover, Chen et al [84] employed the non-destructive surfaceenhanced Raman scattering (SERS) technique to investigate the morphology, chemical composition, and mixing state of multiple components of the individual fine particles during a haze episode in Beijing. The results showed that the atmospheric particles were mainly opaque soot during the cleaning period, while during the pollution period, the atmospheric particles were a mixture of opaque (soot) and transparent particles (nitrate and sulfate) and had a core-shell structure.…”

Section: Heterogeneous Reactions Of So 2 and No 2 On The Surfaces Of ...mentioning

confidence: 99%

Research Progress on Heterogeneous Reactions of Pollutant Gases on the Surface of Atmospheric Mineral Particulate Matter in China

et al. 2022

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Haze is the phenomenon of visibility degradation caused by extinction effects related to the physicochemical properties of atmospheric particulate matter (APM). Atmosphere heterogeneous reactions can alter the physicochemical properties of APM. Therefore, it is important to understand the atmospheric heterogeneous reactions of APM in order to reveal the cause of haze. Herein, the current situation, developmental trend, source, and composition of APM pollution in China are reviewed. Additionally, we introduce the reaction characteristics and key chemical processes of common inorganic, organic, and mixed pollutant gases on the surface of mineral particles. The effects of mineral particulate matter on aggregation, regulation, and catalysis in the formation of atmospheric aerosols and the synergistic reaction mechanism of SO2, NO2, O3, and VOCs on the surfaces of different mineral particles are summarized. The problems existing in the current research on heterogeneous reactions on the surfaces of mineral particles are also evaluated. This paper aims to gain a deep understanding of the mechanism of mineral particulate matter promoting the formation of secondary aerosols and attempts to provide theoretical support for effective haze control.

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Raman Microspectroscopy of Particles

Sobanska,

Bonhommeau,

Desmedt

et al. 2024

Geophysical Monograph Series

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Surface-enhanced Raman scattering for mixing state characterization of individual fine particles during a haze episode in Beijing, China

Cited by 7 publications

References 47 publications

Single-particle Raman spectroscopy for studying physical and chemical processes of atmospheric particles

Single-particle Raman spectroscopy for studying physical and chemical processes of atmospheric particles

Research Progress on Heterogeneous Reactions of Pollutant Gases on the Surface of Atmospheric Mineral Particulate Matter in China

Raman Microspectroscopy of Particles

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