Abstract
We have both theoretically and experimentally demonstrated that the laser-enhanced ionization (LEI) technique can be a simple, alternative method for flame temperature determination in an atmospheric air/acetylene flame. A three-level model of rate equations is developed to determine a flame temperature based upon the Boltzmann population of the ground fine structures of the analyte selected. A Ga sample was used for the test, and the LEI signal was measured with excitation to various intermediate states. The determined flame temperatures are very consistent with each other and also with those previously reported.
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References
1.
Alkemade
C. Th. J.
Hollander
T.
Snelleman
W.
and
Zeegers
P. J. Th
, Metal Vapours in Flames (Pergamon Press , New York , 1982 ).
2.
Crosley
D. R.
, Laser Probes for Combustion Chemistry , ACS Symp. Ser. No. 134 (American Chemical Society , Washington, D.C. , 1980 ).
3.
Travis
J. C.
Turk
G. C.
and
Green
R. B
, Anal. Chem. 54 , 1006A (1982 ).
4.
Van Dijk
C. A.
Curran
F. M.
Lin
K. C.
and
Crouch
S. R
, Anal. Chem. 53 , 1275 (1981 ).
5.
Axner
O.
Magnusson
IU.
Peterrson
J.
and
Sjostrom
S
, Appl. Spectrosc. 41 , 19 (1987 ).
6.
Omenetto
N.
Berthoud
Th.
Cavalli
P.
and
Rossi
G
, Anal. Chem. 57 , 1256 (1985 ).
7.
Axner
O.
Lindgren
I.
Magnusson
I.
and
Rubinsztein-Dunlop
H
, Anal. Chem. 57 , 773 (1985 ).
8.
Lin
K. C.
and
Duh
Y. S
, Appl. Spectrosc. 43 , 20 (1989 ).
9.
Turk
G. C.
DeVoe
J. R.
and
Travis
J. C
, Anal. Chem. 54 , 643 (1982 ).
10.
Berglind
T.
Nillson
S.
and
Rubinstein-Dunlop
H
, Phys. Scripta 36 , 246 (1987 ).
11.
Epler
K. S.
and
O'Haver
T. C
, Anal. Chem. 60 , 2062 (1988 ).
12.
Smith
B. W.
Hart
L. P.
and
Omenetto
N
, Anal. Chem. 58 , 2147 (1986 ).
13.
Cool
T. A.
, Appl. Optics 23 , 1559 (1984 ).
14.
Mallard
E. G.
and
Smyth
K. C
, Comb. Flame 44 , 61 (1982 ).
15.
Lin
K. C.
Hunt
P. M.
and
Crouch
S. R
, Chem. Phys. Lett. 90 , 111 (1982 ).
16.
Travis
J. C.
, J. Chem. Educ. 59 , 909 (1982 ).
17.
Wiese
W. L.
and
Martin
G. A
, in Wavelengths and Transition Probabilities for Atoms and Atom Ions , Part II, NSRDS-NBS 68 (1980 ).
18.
De Galan
L.
and
Samaey
G. F
, Spectrochim. Acta 25B , 245 (1972 ).
19.
Kirkbright
G. F.
Sargent
M.
and
Vetler
S
, Spectrochim. Acta 25B , 465 (1970 ).
20.
Omenntto
M.
Benetti
D.
and
Rossi
G
, Spectrochim. Acta 27B , 453 (1972 ).
21.
Browner
R. F.
and
Winefordner
J. D
, Anal. Chem. 44 , 247 (1972 ).
22.
Haraguchi
H.
Smith
B.
Weeks
S.
Johnson
D. J.
and
Winefordner
J. D
, Appl. Spectrosc. 31 , 156 (1977 ).
23.
Haraguchi
H.
and
Winefordner
J. D
, Appl. Spectrosc. 31 , 195 (1977 ).
24.
Volk
L.
Richardson
W.
Lau
K. H.
Hall
M.
and
Lin
S. H
, J. Chem. Educ. 54 , 95 (1977 ).
25.
Gaydon
A. G.
and
Wolfhand
H. G
, Flames: Their Structure, Radiation and Temperature (Chapman and Hall , London , 1979 ), 4th ed.