Field-rugged sensitive hydrogen peroxide sensor based on tunable diode laser absorption spectroscopy (TDLAS)

M. B. Frish; J. R. Morency; M. C. Laderer; R. T. Wainner; K. R. Parameswaran; W. J. Kessler; M. A. Druy

doi:10.1117/12.851287

27 April 2010 Field-rugged sensitive hydrogen peroxide sensor based on tunable diode laser absorption spectroscopy (TDLAS)

M. B. Frish, J. R. Morency, M. C. Laderer, R. T. Wainner, K. R. Parameswaran, W. J. Kessler, M. A. Druy

Author Affiliations +

Proceedings Volume 7680, Next-Generation Spectroscopic Technologies III; 768006 (2010) https://doi.org/10.1117/12.851287
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

This paper reports the development and initial testing of a field-portable sensor for monitoring hydrogen peroxide (H₂O₂) and water (H₂O) vapor concentrations during building decontamination after accidental or purposeful exposure to hazardous biological materials. During decontamination, a sterilization system fills ambient air with water and peroxide vapor to near-saturation. The peroxide concentration typically exceeds several hundred ppm for tens of minutes, and subsequently diminishes below 1 ppm. The H₂O₂/ H₂O sensor is an adaptation of a portable gas-sensing platform based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology. By capitalizing on its spectral resolution, the TDLAS analyzer isolates H₂O₂ and H₂O spectral lines to measure both vapors using a single laser source. It offers a combination of sensitivity, specificity, fast response, dynamic range, linearity, ease of operation and calibration, ruggedness, and portability not available in alternative H₂O₂ detectors. The H₂O₂ range is approximately 0- 5,000 ppm. The autonomous and rugged instrument provides real-time data. It has been tested in a closed-loop liquid/vapor equilibrium apparatus and by comparison against electrochemical sensors.

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M. B. Frish, J. R. Morency, M. C. Laderer, R. T. Wainner, K. R. Parameswaran, W. J. Kessler, and M. A. Druy "Field-rugged sensitive hydrogen peroxide sensor based on tunable diode laser absorption spectroscopy (TDLAS)", Proc. SPIE 7680, Next-Generation Spectroscopic Technologies III, 768006 (27 April 2010); https://doi.org/10.1117/12.851287

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