[19p-A37-1~15] 3.7 Optical measurement, instrumentation, and sensor

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[19p-A37-9] Development of IR spectroscopy combined with differential pressure measurement

〇Dockchil Che¹, Shuntaro Azuma², Satoru Muramatsu², Yoshiya Inokuchi² (1.Osaka Univ., 2.Hiroshima Univ.)

Keywords:

infrared spectroscopy,Differential pressure measurement

In order to realize the high-sensitive gas analysis, we developed a new spectroscopic measurement technique of the infrared spectroscopy combined with the differential pressure measurement. We succeeded in the measurements of the infrared absorption spectra for ammonia and cyclohexane at a concentration of 50 ppm as sample gases. Comparing the results with those of FT-IR spectra, it was found that the resolution of this measurement device was 1 cm^-1 and that it also had excellent measurement sensitivity.