Abstract
A laser absorption spectrometer is described which employs a wavelength tunable diode laser in conjunction with a multipass White cell. The instrument uses absorption lines in theν 3 band of SO2 to monitor atmospheric SO2 concentrations with sensitivities as high as 0.2 parts per billion (ppb) in a laboratory system. A portable instrument with a fast response time and a sensitivity of 1 ppb is described, and the development of a highly practical field instrument, based on pyroelectric detectors, is discussed.
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J. Reid, J. Shewchun, B. K. Garside andE. A. Ballik,Appl. Opt. 17 (1978) 300–07.
Idem, Opt. Eng. 17 (1978) 56–62.
J. Reid, B. K. Garside, J. Shewchun, M. Elsherbiny andE. A. Ballik,Appl. Opt. 17 (1978) 1806–10.
L. S. Rothman, S. A. Clough, R. A. McClatchey, L. G. Young, D. E. Snider andA. Goldman,ibid 17 (1978) 507.
R. A. McClatchey, W. S. Benedict, S. A. Clough, D. E. Burch, R. F. Calfee, K. Fox, L. S. Rothman andJ. S. Garing, ‘AFCRL Atmospheric Absorption Line Parameters Compilation’, AFCRL-Report TR-73-0096 (January 1973), unpublished.
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Work supported by the Department of National Health and Welfare, Environment Canada, Ontario Ministry of the Environment, and Atmospheric Service, Environment Canada.
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Reid, J., Garside, B.K. & Shewchun, J. Detection of sulphur dioxide at, and below, the part per billion level using a tunable diode laser. Opt Quant Electron 11, 385–391 (1979). https://doi.org/10.1007/BF00619820
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DOI: https://doi.org/10.1007/BF00619820