Asian Journal of Atmospheric Environment

  • 제5권1호
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  • Pages.56-63
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  • 2011
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  • 1976-6912(pISSN)
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  • 2287-1160(eISSN)
한국대기환경학회 (Korean Society for Atmospheric Environment)
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Preliminary Study on the Visualization and Quantification of Elemental Compositions in Individual Microdroplets using Solidification and Synchrotron Radiation Techniques

  • Ma, Chang-Jin (Department of Environmental Science, Fukuoka Women's University) ;
  • Tohno, Susumu (Graduate School of Energy Science, Kyoto University) ;
  • Kasahara, Mikio (Institute of Science and Technology Research, Chubu University)
  • 투고 : 2010.11.09
  • 심사 : 2011.01.26
  • 발행 : 2011.03.31
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초록

Quantifying the solute composition of a cloud droplet (or a whole droplet) is an important task for understanding formation processes and heating/cooling rates. In this study, a combination of droplet fixation and SR-XRF microprobe analysis was used to visualize and quantify elements in a micro-scale droplet. In this study, we report the preliminary outcome of this experiment. A spherical micro-scale droplet was successfully solidified through exposure to ${\alpha}$-cyano-acrylate vapor without affecting its size or shape. An X-ray microprobe system equipped at the beam line 37XU of Super Photon ring 8 GeV (SPring-8) was applied to visualize and quantify the elemental composition in an individual micro-scale droplet. It was possible to reconstruct 2D elemental maps for the K and Cl contained in a microdroplet that was dispensed from the 10-ppm KCl standard solution. Multi-elemental peaks corresponding to X-ray energy were also successfully resolved. Further experiments to determine quantitative measures of elemental mass in individual droplets and high-resolution X-ray microtomography (i.e., 3D elemental distribution) are planned for the future.

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피인용 문헌

  1. Preliminary Study on the Cloud Condensation Nuclei (CCN) Activation of Soot Particles by a Laboratory-scale Model Experiments vol.8, pp.4, 2014, https://doi.org/10.5572/ajae.2014.8.4.175