Comparison between two carbonyl measurement methods in the atmosphere

C.P. Ferrari; R. Durand-Jolibois; Carlier; V. Jacob; A. Roche; P. Foster; P. Fresnet

doi:doi:10.1051/analusis:1999104

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Volume 27 / No 1 (January/February 1999)

Analusis, 27 1 (1999) 45-52

Abstract

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Issue		Analusis Volume 27, Number 1, January/February 1999 Importance de la lipophilie en modélisation moléculaire


Page(s)		45 - 52
Section		Original articles
DOI		https://doi.org/10.1051/analusis:1999104

Analusis 27, 45-52 (1999)
DOI: 10.1051/analusis:1999104

Comparison between two carbonyl measurement methods in the atmosphere

C.P. Ferrari^{1, 2}, R. Durand-Jolibois³, Carlier³, V. Jacob¹, A. Roche¹, P. Foster¹ and P. Fresnet³

¹ Groupe de Recherche sur l'Environnement et la Chimie Appliquée, Université Joseph Fourier, I.U.T de Chimie, 39-41 boulevard Gambetta, 38000 Grenoble, France
² Institut des Sciences et Techniques de Grenoble, Université Joseph Fourier, 28 avenue Benoît Frachon, BP. 53, 38041 Grenoble, France
³ Laboratoire Interuniversitaire des Systèmes Atmosphériques, associé au CNRS, Centre Multidisciplinaire, Universités Paris VII et Paris XII, 61 avenue du General De Gaulle, 94010 Creteil Cedex, France

Abstract
Two atmospheric aldehyde sampling techniques, the impinger method in which aldehydes are trapped in a 2,4-dinitrophenylhydrazine acidified acetonitrile solution, and the method in which aldehydes are captured in 2,4-dinitrophenylhydrazine acidified coated cartridges commercialised by the WATERS $^{\text{\textregistered}}$ , were compared for blank values, sample preservation, ozone action, and water influence. The two methods were tested in a Paris atmosphere and the influence of a KI ozone scrubber has been evaluated. Except for acetaldehyde and benzaldehyde, the two techniques do not give coherent results. When no ozone scrubber is used, the cartridge technique gives systematically lower values. Bad correlation has been obtained between data with scrubber and data without scrubber for the impinger technique except for acetaldehyde. For the cartridge technique, the correlation is better for all the aldehydes but higher values are found when a scrubber is used, except for formaldehyde. Ozone action leads to 2,4-dinitrophenylhydrazone destruction, but also to formaldehyde 2,4-dinitrophenylhydrazone formation by reaction between airborne volatile organic compounds and ozone on the cartridge surfaces.