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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 48, Iss. 8 — Aug. 1, 1994
  • pp: 1003–1006

Measurement of Ammonia with the Differential Optical Absorption Technique Combined with Fourier Transform

L. Axelsson

Applied Spectroscopy, Vol. 48, Issue 8, pp. 1003-1006 (1994)


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Abstract

By using the differential optical absorption technique combined with Fourier transformation, we have achieved a good separation of ammonia from sulfur dioxide in the wavelength range 207 to 217 nm. Measurements show that, with a pathlength of two decimeters and a measuring time of one minute, we can measure less than 1.32 mg/m<sup>3</sup> [1.9 ppm (volume)] of ammonia with a standard deviation of 0.46 mg/m<sup>3</sup> [0.66 ppm (volume)] with interference from 408.73 mg/m<sup>3</sup> [156 ppm (volume)] sulfur dioxide.

Citation
L. Axelsson, "Measurement of Ammonia with the Differential Optical Absorption Technique Combined with Fourier Transform," Appl. Spectrosc. 48, 1003-1006 (1994)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-48-8-1003


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