Issue
J. Phys. IV France
Volume 04, Number C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
Page(s) C7-519 - C7-522
DOI https://doi.org/10.1051/jp4:19947122
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique

J. Phys. IV France 04 (1994) C7-519-C7-522

DOI: 10.1051/jp4:19947122

The analysis of error in trace gas concentration measurements by intermodulated photoacoustic stark spectroscopy (IMPASS)

T. Groot1, D. Bicanic1, M. van Montfort2, P. Torfs3, R. Braun1 and K. van Asselt1

1  Laser Photoacoustic Laboratory, Department of Agricultural Engineering and Physics, Agricultural University, Bomenweg 4, 6703 HD Wageningen, The Netherlands
2  Department of Mathematics, Dreijenlaan 4, Agricultural University, 6703 HA Wageningen, The Netherlands
3  Department of Water Resources, Agricultural University, de Nieuwlanden, Nieuwe Kanaal 11, 6709 PA Wageningen, The Netherlands


Abstract
Data collected in an actual IMPASS experiment with a static gaseous mixture (methyl fluoride/ethylene/nitrogen) of preselected concentrations were analyzed with respect to uni(bi)modality, symmetry, skeweness and kurtosis. Bimodal probability distribution function is significantly different from Gaussian suggesting the presence of "mixed" data in the measurements ; the potential cause for this phenomenon is discussed.



© EDP Sciences 1994