Facultade de Fisioterapia

Direct determination of magnesium at the 1% level in solid samples by graphite furnace-atomic absorption spectrometry

Authors: M.A. Belarra, Isela Lavilla, J.R. Castillo

Journal: Analytical Sciences, 11: 651-656, 08/1995

DOI: https://doi.org/10.2116/analsci.11.651


Abstract

Magnesium can be determined at levels above 1% in poly (vinyl chloride) (PVC) by direct analysis of the solid sample using graphite furnace atomic absorption spectrometry (GFAAS) and working at the 383.4nm line. The analytical conditions used permit the determination of magnesium at a concentration of 2% by interpolation on a calibration graph run for the aqueous solution. No special sample introduction system, platform or matrix modification is required. The relative standard deviation thus achieved is ca. 7%.