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Talanta

Title:		Effect of halogenated solvents on iron atomization in graphite-furnace atomic-absorption spectroscopy
Author(s):		Karwowska R; Bulska E; Hulanicki A;
Address:		"Department of Chemistry, University of Warsaw, Warsaw, Poland"
Journal Title:		Talanta
Year:		1980
Volume:		27
Issue:		5
Page Number:		397 - 402
DOI:		10.1016/0039-9140(80)80222-0
ISSN/ISBN:		0039-9140 (Print) 0039-9140 (Linking)
Abstract:		"When an iron solution in an organic solvent is examined by atomic-absorption spectroscopy, the signal decreases to below that for a comparable aqueous solution. This effect is most pronounced for halogen-containing solvents because of volatility of FeCl(2), and a change in the atomization curve with a shift towards higher temperatures for atomization. When the cuvette is pretreated with halogenated solvent a double peak is observed. The first peak corresponds to that found for aqueous solvents, the second may be correlated with the peak for iron in a halogenated solvent. The peaksplitting effect of such a solvent increases with halogen:hydrogen ratio in the solvent. The halogen penetrates the structure of the graphite cuvette and probably forms strong carbon-haloge. compounds which modify the atomization conditions for iron. When water is introduced hydrogen halide is formed, which removes the excess of halogen from the atomization region"
Keywords:
Notes:		"PubMed-not-MEDLINEKarwowska, R Bulska, E Hulanicki, A eng Netherlands 1980/05/01 Talanta. 1980 May; 27(5):397-402. doi: 10.1016/0039-9140(80)80222-0"