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Proceedings Paper

Standoff Raman measurement of nitrates in water
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Paper Abstract

The identification and real time detection of explosives and hazardous materials are of great interest to the Army and environmental monitoring/protection agencies. The application and efficiency of the remote Raman spectroscopy system for real time detection and identification of explosives and other hazardous chemicals of interest, air pollution monitoring, planetary and geological mineral analysis at various standoff distances have been demonstrated. In this paper, we report the adequacy of stand-off Raman system for remote detection and identification of chemicals in water using dissolved sodium nitrate and ammonium nitrate for concentrations between 200ppm and 5000ppm. Nitrates are used in explosives and are also necessary nutrients required for effective fertilizers. The nitrates in fertilizers are considered as potential sources of atmospheric and water pollution. The standoff Raman system used in this work consists of a 2-inch refracting telescope for collecting the scattered Raman light and a 785nm laser operating at 400mW coupled with a small portable spectrometer.

Paper Details

Date Published: 15 September 2011
PDF: 6 pages
Proc. SPIE 8156, Remote Sensing and Modeling of Ecosystems for Sustainability VIII, 81560D (15 September 2011); doi: 10.1117/12.893571
Show Author Affiliations
S. Sadate, Alabama A&M Univ. (United States)
A. Kassu, Alabama A&M Univ. (United States)
C. W. Farley, Alabama A&M Univ. (United States)
A. Sharma, Alabama A&M Univ. (United States)
J. Hardisty, Univ. of Oklahoma (United States)
Miles T. K. Lifson, Claremont McKenna College (United States)


Published in SPIE Proceedings Vol. 8156:
Remote Sensing and Modeling of Ecosystems for Sustainability VIII
Wei Gao; Thomas J. Jackson; Jinnian Wang; Ni-Bin Chang, Editor(s)

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