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.

A Multichannel Spectrometer for Simultaneous Atomic Absorption and Flame Emission Analysis

R. Mavrodineanu and R. C. Hughes
Appl. Opt. 7(7) 1281-1285 (1968)

The Application of Separated Flames in Analytical Flame Spectroscopy

G. F. Kirkbright and T. S. West
Appl. Opt. 7(7) 1305-1311 (1968)

Atomic Emission Characteristics of a Premixed Acetylene–Nitrous Oxide, Total Consumption Flame

Victor G. Mossotti and Marjorie Duggan
Appl. Opt. 7(7) 1325-1330 (1968)

Shape of an Emission Line of CH Produced in an Oxyacetylene Flame*

D. H. Rank, G. D. Saksena, and T. A. Wiggins
J. Opt. Soc. Am. 48(8) 521-524 (1958)

Atomic Absorption Spectroscopy with High Temperature Flames

J. B. Willis
Appl. Opt. 7(7) 1295-1304 (1968)