Abstract
The interferences of hydrochloric, perchloric, nitric and phosphoric acids on the flameless atomic absorption spectrometry of copper, iron and chromium have been investigated. The mechanism of the acid interferences is discussed. The interferences depend on the acid used, the elements, and the power levels supplied to the filament. The interferences were minimized at high power supplied to the filament with the exception of the effect of phosphoric acid on copper absorption.
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