Molekülabsorptionsspektrometrie bei elektro-thermischer verdampfung in einer graphitrohrküvette

Abstract

Molecular absorption spectrometry with electrothermal volatilization in a graphite tube. Part 4. Determination of bromide traces by molecular absorption of InBr and TlBr The molecular absorption of thermally stable diatomic molecules such as GaBr, InBr and TlBr, generated by evaporation in a normal graphite cuvette, is useful for the determination of traces of bromide. Optimal experimental conditions are reported. The presence of sodium ions increases the molecular absorption signals for InBr. The influence of other substances on the molecular absorption is discussed. The reciprocal sensitivities relative to 0.01 absorbance are 50 ng of bromide with TlBr and 130 ng of bromide with InBr.