What are the sources of error in doing Magnesium assay using AAS?

07 December 2021 1 5K Report

I have consistently obtained high Magnesium assay results on AAS regardless of samples that my analysts used. I need some ideas on sources of error or things to consider when doing the assay.

Pierluigi Traverso

Dear Dr. Fong-Kai Lee ,

using the air-acetylene flame the most common interferences can be overcome by the addition of a known eccess of a releasing agent such us strontium (1000--5000 µg/ml) or lanthanium (10.000 µg/ml).

The nitrous oxide-acetylene flame shows no interference except a general absorbance enhance of 15% by the alkali metals due to the suppression of ionization.

Source: Analytical methods for flame spectroscopy by Varian Techtron.

My best regards, Pierluigi Traverso.

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