Measurement of ammonia skin gas using a mid-infrared Pb-salt tunable diode laser

Trocia N. Clasp; Sindhu Kaimal; Scott W. Reeve; William A. Burns

doi:10.1117/12.850487

5 May 2010 Measurement of ammonia skin gas using a mid-infrared Pb-salt tunable diode laser

Trocia N. Clasp, Sindhu Kaimal, Scott W. Reeve, William A. Burns

Proceedings Volume 7665, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XI; 766518 (2010) https://doi.org/10.1117/12.850487
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

The concentration of Ammonia excreted through human skin has recently been measured using a gas chromatograph equipped with a flame ionization detector (GC-FID) by a group from Nagoya, Japan. These emissions, referred to as ammonia skin gas, were determined to be 1.7±.4 ng/cm³ for healthy subjects in the study. To achieve greater molecule specificity, sensitivity, as well as add a real time capability, we are investigating the potential of a mid IR laser spectrometer, consisting of a Pb-salt diode laser coupled with a low volume 75 meter Herriott gas sample cell, to perform real time ammonia diagnostic measurements. Here we will present a series of preliminary ammonia skin gas measurements obtained with this mid IR laser system.

Citation Download Citation

Trocia N. Clasp, Sindhu Kaimal, Scott W. Reeve, and William A. Burns "Measurement of ammonia skin gas using a mid-infrared Pb-salt tunable diode laser", Proc. SPIE 7665, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XI, 766518 (5 May 2010); https://doi.org/10.1117/12.850487

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