Abstract
Detection of monobasic, straight-chain saturated fatty acid (octadecanoic C18:0) in CCl4, based on the thermal lens effect after excitation by CO2 laser radiation at 934.9 cm−1, is described for the first time. The achieved limit of detection (LOD = 0.3%) is comparable to that of the transmission infrared technique. Possibilities for further improvements in sensitivity and detection limit are also discussed.
Get full access to this article
View all access options for this article.
References
1.“Organic Analysis” , Volume III ,
Kolthoff
I. M.
Mitchell
J.
Jr.
Proskauer
E. S.
and
Weisberger
A
, Eds. (Interscience , New York , 1956 ).
2.
Kwan
D. J.
and
Rhee
J. S
, J. Amer. Oil Chem. Soc. (JAOCS) 63 , 89 (1986 ).
3.
Chapman
D.
, The Structure of Lipids by Spectroscopic and X-Ray Techniques (Metheun and Co. , London , 1965 ).
4.
Dovichi
N. J.
, CRC Crit. Rev. Anal. Chem. 17 , 357 (1987 ).
5.
Carter
C. A.
Brady
J. M.
and
Harris
J. M
, Appl. Spectrosc. 36 , 309 (1982 ).
6.
Parker
F. S.
, Applications of Infrared Spectroscopy in Biochemistry, Biology and Medicine (Adam Hilger , London , 1971 ).
7.
Berthoud
T.
and
Delorme
N
, Appl. Spectrosc. 41 , 15 (1987 ).
8.
Bobbitt
D. R.
and
Erskine
S. R
, Appl. Spectrosc. 43 , 668 (1989 ).
9.
Bobbitt
D. R.
and
Erskine
S. R
, Anal. Chem. 61 , 910 (1989 ).