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Axial distribution of the analytical signal in the “graphite arc” method in the presence of additives and in different atmospheres

Authors
Journal
Spectrochimica Acta Part B Atomic Spectroscopy
0584-8547
Publisher
Elsevier
Publication Date
Volume
33
Issue
9
Identifiers
DOI: 10.1016/0584-8547(78)80078-0

Abstract

Abstract The influence of various potassium salts and barium nitrate on the axial distribution of Δ Y = log I line — log I background was investigated in the case of the line In 303.9 nm. Comparative studies of the axial distribution were made for lines of the elements: Tl, Pb, Mg, Co, Cd, Zn, Hg in the presence of Ba(NO 3) 2 in air and in argon. The axial distributions of the effective temperature and the electron pressure were studied in the presence of various additives in air and in argon with barium nitrate as additive. It is shown that a most favourable region of emission exists for every element for a given additive and atmosphere.

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