1996
DOI: 10.1016/0022-4073(96)00042-8
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DOAS for flue gas monitoring—I. Temperature effects in the U.V./visible absorption spectra of NO, NO2, SO2 and NH3

Abstract: Abstract-The temperature dependence of the absolute and the differential absorption cross-sections for NO, S02, NOz and NH3 were studied by recordings of spectra in a heat-pipe cell and by simulations of theoretical spectra for NO. A review and comparison of the present results with other relevant works were also made. The experimental results showed that the differential absorption features for some of the studied species change dramatically with temperature. For SO, and NO, the quantitative change in differe… Show more

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Cited by 58 publications
(28 citation statements)
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“…A subband contains several spectral lines, corresponding to various rotational energy level transitions. It has been shown by atomic absorption spectroscopy [5] that Doppler broadening on absorption spectral lines presents with temperature rise, which has been affirmed by studies conducted by Mellqvist et al [4].…”
Section: Introductionmentioning
confidence: 78%
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“…A subband contains several spectral lines, corresponding to various rotational energy level transitions. It has been shown by atomic absorption spectroscopy [5] that Doppler broadening on absorption spectral lines presents with temperature rise, which has been affirmed by studies conducted by Mellqvist et al [4].…”
Section: Introductionmentioning
confidence: 78%
“…Mellqvist et al [4,6,7] decomposed the ultraviolet absorption cross-section of SO 2 (s l ) into the discrete absorption cross-section (s l1 ) and the continuous absorption cross-section (s l2 ). The absorption at discrete peaks was related to the electron energy level transition 1 A 1 R 1 A 2 , but the basal continuous absorption was related to the electron energy level transition 1 A 1 R 1 B 1 .…”
Section: Analysis Of the Resultsmentioning
confidence: 99%
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“…Ammonia exhibits absorption features between 180 and 230 nm [36], but does not have absorption regions in the visible [37]. While ammonia does have characteristic NIR absorption features [38], ammonia's strongest absorption features are observed in the thermal infrared.…”
mentioning
confidence: 99%