On the mechanism of the releasing effect of lanthanum chloride in flame spectrometry

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Abstract

Graphite furnace volatilization and flame atomization were combined for studying the volatilization characteristics of Ca + Al and Ca + Al + La systems. Based on the results of these model experiments the following mechanism of releasing effect is offered: the excess of lanthanum chloride additive promotes the evolution of calcium chloride vapour at a relatively low temperature and thus the formation of calcium aluminate (the thermostable compound of the analyte and the interferent) is prevented. This explanation is consistent with the finding that a releasing effect is not attained with lanthanum nitrate additive.

Original languageEnglish
Pages (from-to)543-551
Number of pages9
JournalSpectrochimica Acta Part B: Atomic Spectroscopy
Volume42
Issue number4
DOIs
Publication statusPublished - 1987

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

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