Observations on the effect of oxidation state on the sensitivity of flame AAS determinations of tellurium

Abstract

During evaluations of a new boosted-discharge Te lamp we found unexpected differences in the flame AAS sensitivity for Te, depending on the oxidation state. Te(IV) gave a significantly greater absorbance (by a factor of ∼1.66) than the same concentration of Te(VI) in both the air-C₂H₂ flame and the N₂O-C₂H₂ flame. The effect was not observed with ICP-AES.

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