Outdoor, indoor, and human breath content measurements of ammonia by tunable diode laser spectroscopy technique

Konstantin L. Moskalenko; Alexander I. Nadezhdinskii

doi:10.1117/12.255330

21 October 1996 Outdoor, indoor, and human breath content measurements of ammonia by tunable diode laser spectroscopy technique

Konstantin L. Moskalenko, Alexander I. Nadezhdinskii

Author Affiliations +

Proceedings Volume 2834, Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Process Monitoring; (1996) https://doi.org/10.1117/12.255330
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Trace contents of ammonia in outdoor, indoor and exhaled air were measured on the base of high resolution absorption spectra. Tunable diode laser system developed for this purpose possesses approximately one second time constant, approximately 200 cm3 sample volume, 5 ppb sensitivity. The calibration of unit was based on measurements of relative intensities of sQ(3,1)...sQ(3,3) absorption lines of v_2s and following calculation on the base of a priori data on strength and broadening coefficients of detected lines. Measured indoor contents of ammonia was in 5-10 times higher than outdoor contents. Approximately two times drop in NH₃ room content after 6 p.m. was detected. Obtained behavior of ammonia content in respiration right after the smoking demonstrates that the removing of ammonia from lungs has the ventilation character. Measured contents of NH₃ in human respiration was ranged between 120 and 220 ppb. The absence of ammonia content differences from respiration of smoking and non smoking persons demonstrates that the accumulation of NH₃ by human organism seems to be rather negligible for a short time exposure, e.g. like smoking.

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Konstantin L. Moskalenko and Alexander I. Nadezhdinskii "Outdoor, indoor, and human breath content measurements of ammonia by tunable diode laser spectroscopy technique", Proc. SPIE 2834, Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Process Monitoring, (21 October 1996); https://doi.org/10.1117/12.255330

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