Abstract
A simple derivation can show that the effect of flame shape, multiple flames, and multi-pass optical systems should be the same for flame emission intensity as for atomic absorption response. Experimental evidence confirms the prediction and shows that the steps used to increase atomic absorption response are directly applicable to emission measurements. Increased emission intensities reduce noise levels and lower detection limits by lowering the required electrical gain and by permitting the use of narrower spectrometer slits. The improvement in detection limits from the use of narrow slits depends on the background structure in the vicinity of the line. Three cases are considered in detail.
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References
1.
Allen
J. E.
, Analyst 83 , 466 (1958 ).
2.
Willis
J. B.
, Spectrochim. Acta 16 , 259 (1960 ).
3.
Zeeman
P. B.
and
Butler
L. R. P.
, Appl. Spectry. 16 , 120 (1962 ).
4.
Tableing
R. W.
and
Devany
J. J.
, Developments in Applied Spectroscopy ,
Ashby
W. D.
, Ed. (Plenum Press, Inc. , New-York , 1962 ), Vol. 1 .
5.
Dean
J. A.
, Flame Photometry (McGraw—Hill Book Co. , New York , 1960 ).
6.
Mavrodineanu
R.
and
Boiteux
H.
, Flame Spectroscopy (John Wiley & Sons, Inc. , New York , 1965 ).
7.
Pickett
E. E.
and
Koirtyohann
S. R.
, Spectrochim. Acta 23B , 235 (1968 ).
8.
Walsh
A.
, Spectrochim. Acta 7 , 108 (1955 ).
9.
Pungor
E.
, Flame Photometry Theory (D. Van Nostrand Inc. , New York , 1967 ).
10.
Winefordner
J. D.
McGee
W. W.
Mansfield
J. M.
Parsons
M. L.
, and
Zacha
K. E.
, Anal. Chim. Acta 36 , 25 (1966 ).
11.
Zeegers
P. J. T.
Smith
R.
, and
Winefordner
J. D.
, Anal. Chem. 40 , 26A , (1968 ).
12.
Winefordner
J. D.
, Appl. Spectry. 17 , 109 (1963 ).
13.
Kirkbright
G. F.
Semb
A.
, and
West
T. S.
, Spectroscopy Letters 1 , 7 (1968 ).