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Proceedings Paper

Determination of ammonia in a flow injection cell using the diode laser fiber optic colorimetric spectrometer
Author(s): SungHo Kim; Sung Man Nam; Gill Sang Byun; Shin-Young Yun; Seongsik Hong; Jong Shin Yoo
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Paper Abstract

The determination of ammonia has been studied using a compact diode laser/fiber optic colorimetric spectrometer combined with a flow injection cell. This system is mainly based on the diode laser at 638 nm. The flow rate and the molar concentration of reagents for indophenol formation in flows were specified through the experiment of optimization. The relationship between the colorimetric absorption signal and the concentration of injected ammonia was found to be linear over the three orders of magnitude indicating a practical dynamic range of the system. In the linear region, a correlation coefficient was 0.9996 and the detection limit was 4 (mu) g/L. This spectrometer as an ammonia analyzer is appropriate for environmental and industrial monitoring applications.

Paper Details

Date Published: 15 March 2000
PDF: 7 pages
Proc. SPIE 3912, Micro- and Nanotechnology for Biomedical and Environmental Applications, (15 March 2000); doi: 10.1117/12.379574
Show Author Affiliations
SungHo Kim, Soonchunhyang Univ. (South Korea)
Sung Man Nam, Soonchunhyang Univ. (South Korea)
Gill Sang Byun, Soonchunhyang Univ. (South Korea)
Shin-Young Yun, Soonchunhyang Univ. (South Korea)
Seongsik Hong, Soonchunhyang Univ. (South Korea)
Jong Shin Yoo, Korea Basic Science Institute (South Korea)

Published in SPIE Proceedings Vol. 3912:
Micro- and Nanotechnology for Biomedical and Environmental Applications
Raymond P. Mariella Jr., Editor(s)

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