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Proceedings Paper

Long-pathlength DOAS (differential optical absorption spectrometer) system for the in situ measurement of xylene in indoor air
Author(s): Heinz W. Biermann; Martina Green; James N. Seiber
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Paper Abstract

A compact differential optical absorption spectrometer with a 2.5 m base path has been constructed for indoor air measurements. The mirror system can achieve a total pathlength of up to 220 m. A cooled photodiode array is used as a detector with a detection limit equivalent to an absorbance of less than 0.0001 (3 α level with 2 mm averaging). This paper describes the setup of the instrument and explains the data acquisition and analysis procedures used.

Paper Details

Date Published: 1 May 1991
PDF: 6 pages
Proc. SPIE 1433, Measurement of Atmospheric Gases, (1 May 1991); doi: 10.1117/12.46147
Show Author Affiliations
Heinz W. Biermann, California Dept. of Food and Agriculture (United States)
Martina Green, Univ. of California/Davis (United States)
James N. Seiber, Univ. of California/Davis (United States)

Published in SPIE Proceedings Vol. 1433:
Measurement of Atmospheric Gases
Harold I. Schiff, Editor(s)

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