Alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements

Differential optical absorption spectroscopy is a widely used technique for open-column atmospheric-gas pollution monitoring. The concentration retrieval is based on the fitting of the measured differential absorbance through the Lambert-Beer law. We present an alternative method for calculating the...

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Autores principales: Videla, Fabián Alfredo, Schinca, Daniel Carlos, Tocho, Jorge Omar
Formato: Articulo
Lenguaje:Inglés
Publicado: 2003
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/44353
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id I19-R120-10915-44353
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Gases
espectroscopia de absorción óptica
concentración de gas
spellingShingle Ciencias Exactas
Física
Gases
espectroscopia de absorción óptica
concentración de gas
Videla, Fabián Alfredo
Schinca, Daniel Carlos
Tocho, Jorge Omar
Alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements
topic_facet Ciencias Exactas
Física
Gases
espectroscopia de absorción óptica
concentración de gas
description Differential optical absorption spectroscopy is a widely used technique for open-column atmospheric-gas pollution monitoring. The concentration retrieval is based on the fitting of the measured differential absorbance through the Lambert-Beer law. We present an alternative method for calculating the gas concentration on the basis of the proportionality between differential absorbance and differential absorption cross section of the gas under study. The method can be used on its own for single-component analysis or as a complement to the standard technique in multicomponent cases. The performance of the method for the case of cross interference between two gases is analyzed. The procedure can be used with differential absorption cross sections measured in the laboratory or taken from the literature. In addition, the method provides a criterion to discriminate against different species having absorption features in the same wavelength range.
format Articulo
Articulo
author Videla, Fabián Alfredo
Schinca, Daniel Carlos
Tocho, Jorge Omar
author_facet Videla, Fabián Alfredo
Schinca, Daniel Carlos
Tocho, Jorge Omar
author_sort Videla, Fabián Alfredo
title Alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements
title_short Alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements
title_full Alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements
title_fullStr Alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements
title_full_unstemmed Alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements
title_sort alternative method for concentration retrieval in differential optical absorption spectroscopy atmospheric gas pollutant measurements
publishDate 2003
url http://sedici.unlp.edu.ar/handle/10915/44353
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AT schincadanielcarlos alternativemethodforconcentrationretrievalindifferentialopticalabsorptionspectroscopyatmosphericgaspollutantmeasurements
AT tochojorgeomar alternativemethodforconcentrationretrievalindifferentialopticalabsorptionspectroscopyatmosphericgaspollutantmeasurements
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