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On July 21, 2021, Environmental Science & Technology published an online paper entitled " Using Micro-Raman Spectroscopy to Investigate Chemical Composition, Mixing States, and Heterogeneous Reactions of Individual Atmospheric Particles " by Professor Zhu Tong’s research group , reporting the successful use of Micro-Raman spectroscopy studies the chemical composition, mixed state and heterogeneous chemical reaction results of actual atmospheric single particles
.
Measuring the chemical composition of single particles in the atmosphere can provide direct evidence for studying the mixing state and heterogeneous reaction of particles in the atmosphere
.
In the past, electron microscope-energy spectroscopy (TEM/SEM-EDX) and single particle aerosol mass spectrometry (SPAMS) were used to measure the chemical composition of single particles in the atmosphere
In response to the collected 11 samples of Beijing atmospheric single particles, Zhu Tong's research group used Raman microscopy to measure the chemical composition of 1,200 single particles in the samples
.
According to the characteristic Raman spectroscopy, (NH4)2SO4, NH4NO3, black carbon, organic matter, NaNO3 and a variety of mineral components were identified in a single particle
Wang Mingjin, a postdoctoral fellow in the School of Environmental Science and Engineering, Peking University, and Zheng Nan, an out-of-site postdoctoral fellow, are the co-first authors of the paper, and Zhu Tong is the corresponding author
.
The research was supported by the National Natural Science Foundation of China (91844000, 41421064, 20637020), the Ministry of Science and Technology (2008AA062503), the National Postdoctoral Fund (20100470166) and the 111 Plan Urban Air Pollution and Health Effects (B20009)
Paper link:
Wang MJ#, Zheng N#, Zhao DF, Shang J, and Zhu T*,Using Micro-Raman Spectroscopy to Investigate Chemical Composition, Mixing States, and Heterogeneous Reactions of Individual Atmospheric Particles,Environmental Science & Technology, 2021, https:/ /doi.
Links to related papers:
Yu T#, Zhao DF#, Song XJ, Zhu T*, NO2-initiated multiphase oxidation of SO2 by O2 on CaCO3 particles, Atmospheric Chemistry and Physics, 18(9), 2018, 6679-6689, https://doi.
Zhao DF#, Song XJ#, Zhu T*, Zhang ZF, Liu YJ, Shang J, Multiphase oxidation of SO2 by NO2 on CaCO3 particles, Atmospheric Chemistry and Physics, 18(4), 2018, 2481-2493, https:/ /doi.
Wang MJ#, Zheng N#, Zhu T*, Shang J, Yu T, Song XJ, Zhao DF, Guan Y, Tian YC, Using X-ray computed tomography and micro-Raman spectrometry to measure individual particle surface area, volume, and morphology towards investigating atmospheric heterogeneous reactions, Journal of Environmental Sciences, 69, 2018, 23–32, https://doi.
Liu YJ, Zhu T*, Zhao DF, Zhang ZF, Investigation of the hygroscopic properties of Ca(NO3)2 and internally mixed Ca(NO3)2/CaCO3 particles by micro-Raman spectrometry, Atmospheric Chemistry and Physics, 8(23) , 2008, 7205–7215, https://doi.
Zhao DF, Zhu T*, Chen Q, Liu YJ, Zhang ZF, Raman micro-spectrometry as a technique for investigating heterogeneous reactions on individual atmospheric particles, Science China: Chemistry, 54(1), 2011, 154–160, https: //doi.
