Abstract
The use of wavelength modulation for background correction in graphite furnace atomic emission spectrometry is shown to improve detection limits in some cases by several orders of magnitude and to increase its applicability to sample analysis. An HGA-2100 graphite furnace atomizer is used in conjunction with a 3/4-m monochromator equipped for wavelength modulation. A discussion of analytical growth curves, detection limits, scatter, and optimization of signal/noise ratio is presented. Copper is analyzed in botanical samples and the results are compared to analysis by atomic absorption and molecular absorption spectrophotometry.
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References
1.
Ottaway
J. M.
and
Shaw
F.
, Analyst 100 , 438 (1975 ).
2.
Molnar
C. J.
Chuang
F. S.
, and
Winefordner
J. D.
, Spectrochim. Acta 30B , 183 (1975 ).
3.
Ottaway
J. M.
and
Shaw
F.
, Anal. Letters , 8 , 911 (1975 ).
4.
Snelleman
W.
Rains
T. C.
Yee
K. W.
Cook
H. D.
, and
Menis
O.
, Anal. Chem. 42 , 394 (1970 ).
5.
Maines
I. S.
Mitchell
D. G.
Rankin
J. M.
, and
Bailey
B. W.
, Spectrosc. Letters 5 , 251 (1972 ).
6.
Rains
T. C.
and
Menis
O.
, Anal. Letters 7 , 715 (1974 ).
7.
Epstein
M. S.
and
O'Haver
T. C.
, Spectrochim. Acta 30B , 135 (1975 ).
8.
Winefordner
J. D.
Vickers
T.
, and
Remington
L.
, Anal. Chem. 37 , 1216 (1965 ).
9.
Hermann
R.
and
Alkemade
C. T. J.
, Chemical Analysis by Flame Photometry (Wiley , New York , 1963 ), p. 58 .
10.
Zeegers
P. J. T.
Smith
R.
, and
Winefordner
J. D.
, Anal. Chem. 40 (13 ), 26A (1968 ).
11.
Winefordner
J. D.
, Appl. Spectrosc , 17 , 109 (1963 ).
12.
Epstein
M. S.
and
Rains
T. C.
, Anal. Chem. 48 , 528 (1976 ).
13.
Winefordner
J. D.
and
Vickers
T. J.
, Anal. Chem. 36 , 1939 , (1964 ).
14.Perkin-Elmer Instrument Literature , HGA-2100, Feb. 1974 .
15.
Hermann
R.
and
Alkemade
C. T. J.
, Chemical Analysis by Flame Photometry (Wiley , New York , 1963 ), p. 43 .
16.
Johnson
D. J.
Sharp
B. L.
Dagnall
R. M.
, and
West
T. S.
, Anal. Chem. 47 , 1234 (1975 ).
17.
Manning
D. C.
and
Capacho-Delgado
L.
, Anal. Chim. Acta 36 , 312 (1966 ).
18.
Pickett
E. E.
and
Koirtyohann
S. R.
, Anal. Chem. 41 (14 ), 28A (1969 ).
19.
L'vov
B. V.
, Atomic Absorption Spectrochemical Analysis (Hilger , London , 1970 ).
20.
Epstein
M. S.
Rains
T. C.
, and
O'Haver
T. C.
, Paper 142, Pittsburgh Conference, Cleveland, 1975 .
21.
Sturgeon
R. E.
Chakrabarti
C. L.
, and
Bertels
P. C.
, Anal. Chem. 47 , 1250 (1975 ).
22.
Sturgeon
R. E.
Chakrabarti
C. L.
Maines
I. S.
, and
Bertels
P. C.
, Anal. Chem. 47 , 1240 (1975 ).
23.
Burke
R.
and
Diamondstone
B.
, Private communication , National Bureau of Standards .