Authors: M.A. Belarra, Isela Lavilla, J.R. Castillo
Journal: Analytical Sciences, 11: 651-656, 08/1995
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%.