Long-pathlength DOAS (differential optical absorption spectrometer) system for the in situ measurement of xylene in indoor air

Heinz W. Biermann; Martina Green; James N. Seiber

doi:10.1117/12.46147

1 May 1991 Long-pathlength DOAS (differential optical absorption spectrometer) system for the in situ measurement of xylene in indoor air

Heinz W. Biermann, Martina Green, James N. Seiber

Author Affiliations +

Proceedings Volume 1433, Measurement of Atmospheric Gases; (1991) https://doi.org/10.1117/12.46147
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

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.

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Heinz W. Biermann, Martina Green, and James N. Seiber "Long-pathlength DOAS (differential optical absorption spectrometer) system for the in situ measurement of xylene in indoor air", Proc. SPIE 1433, Measurement of Atmospheric Gases, (1 May 1991); https://doi.org/10.1117/12.46147

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