NEW TECHNIQUE FOR MEASURING ABSORPTION-COEFFICIENTS OF STRONGLY ABSORBING LIQUIDS - OPTOTHERMAL STUDY OF SUNFLOWER OIL, OLEIC-ACID AND ITS CHLOROFORM SOLUTIONS AT 3.39 MICRONS

Authors
BICANIC D CHIRTOC M CHIRTOC I VANVELDHUIZEN B FAVIER JP HELANDER P
Citation
D. Bicanic et al., NEW TECHNIQUE FOR MEASURING ABSORPTION-COEFFICIENTS OF STRONGLY ABSORBING LIQUIDS - OPTOTHERMAL STUDY OF SUNFLOWER OIL, OLEIC-ACID AND ITS CHLOROFORM SOLUTIONS AT 3.39 MICRONS, Spectroscopy letters, 28(1), 1995, pp. 101-110
Citations number
6
Categorie Soggetti
Spectroscopy
Journal title
Spectroscopy letters → ACNP
ISSN journal
00387010
Volume
28
Issue
1
Year of publication
1995
Pages
101 - 110
Database
ISI
SICI code
0038-7010(1995)28:1<101:NTFMAO>2.0.ZU;2-5
Abstract
Optothermal window (OW) cell and a low power infrared (IR) laser (He-N e) were used to measure absorption coefficient beta of sunflower oil, oleic acid (C18:1) and its solutions in chloroform at 3.39 mum. Values of beta as high as 2782 cm-1 (for C18:1) were measured in a simple an d reproducible fashion without the need to know actual sampling pathle ngth. Failure of C-H stretch vibration to follow Bouger-Beer's law was observed and 0.35 % detection limit of C18:1 in CH3Cl at 30 Hz determ ined.