TY  - JOUR
AU  - Dominé, F.
AU  - Rey-Hanot, L.
PY  - 2002//
TI  - Adsorption isotherms of acetone on ice between 193 and 213 K
JO  - Geophysical research letters
VL  - 29
PB  - American Geophysical Union
KW  - 1863 Hydrology: Snow and ice
KW  - 3947 Mineral Physics: Surfaces and interfaces
KW  - 0320 Atmospheric Composition and Structure: Cloud physics and chemistry
N2  - The adsorption isotherms of acetone on ice were measured at 193, 203 and 213 K using a volumetric method with mass spectrometric detection. Henry's law applies for values of the acetone partial pressure, Pacetone, lower than 10?3 Pa. Where Henry's law applies, the number of acetone molecules adsorbed per cm2 of ice, is: nads = 90.53 × Pacetone × exp (6610.2/T), with Pacetone in Pa and T in K. The measured enthalpy of adsorption of acetone on ice is ?Hads = ?55±7 kJ/mol. Acetone values previously measured in Arctic snow are too high to be due to adsorbed acetone. Acetone was then probably dissolved in ice or in organic aerosols contained in snow. Adsorption of acetone in the snowpack or on ice crystals in cirrus clouds is insufficient to affect Pacetone above the snow or in the clouds.
SN  - 0094-8276
UR  - http://dx.doi.org/10.1029/2002GL015078
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=5560), last updated on Tue, 21 Apr 2009 17:28:32 +0200
ID  - Domine+Rey-Hanot2002
ER  -