Direct Analysis of Pieces of Materials by Solid Sampling Electrothermal Atomic Absorption Spectrometry Demonstrated Using High-Purity Titanium

摘要: Solid sampling electrothermal atomic absorption spectrometry using the boat technique and a transversely heated graphite tube was applied to direct analysis of pieces high-purity titanium for Al, As, Ca, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Sn, Zn. It found that enthalpy alloy formation between analyte element matrix plays an important role in atomization mechanism. While elements Zn could be determined without any modification, carbon powder added facilitate vaporization Sn eliminate interferences determination Al Cr. Quantification performed by calibration curve obtained with use aqueous standard solutions. Accuracy checked comparison results those three other methods. Sample amounts up 30 mg per were applicable. The limits detection 15 assayed 0.02 (Mg) ng/g (Sn).