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Ozu, Akira; Esaka, Fumitaka
no journal, ,
A method for the selective measurement of aerosol particles including or consisting of a specified substance has been demonstrated by using laser-induced fluorescence imaging. A remote particle counter developed for the remote and real time monitoring of aerosol particles was applied to visualize separately laser-induced fluorescence emitted from the individual specific aerosol particles. It is made of a Q-switched Nd:YAG laser, a CCD camera equipped with a fast gate shutter, and a personal computer. The camera is also equipped with an optical low-pass filter that transmits the laser-induced fluorescence and eliminates laser-induced backscattered light from particles. It is capable of visualizing selectively as a picture image the fluorescence emitted from particles including a specified substance suspended in a limited measurement volume. The method was tested to visualize alcohol mist aerosol in which a laser dye is dissolved and asbestos particles in air. This method is expected to be useful for measuring selectively the number of a specific aerosol.
Osada, Naoyuki*; Oki, Yuichi*; Kanda, Yukio*; Yokoyama, Sumi; Sato, Kaoru; Manabe, Kentaro; Noguchi, Hiroshi; Endo, Akira; Tanaka, Susumu*; Kaneko, Hirohisa; et al.
no journal, ,
no abstracts in English
Yamasaki, Keizo*; Oki, Yuichi*; Osada, Naoyuki*; Yokoyama, Sumi; Yamada, Yuji*; Tokonami, Shinji*; Fukutsu, Kumiko*; Iida, Takao*; Rahman, N. M.*; Shimo, Michikuni*
no journal, ,
no abstracts in English