Feasibility of the Direct Analysis of Urinary Silicon by Graphite Furnace Atomic Absorption Spectrometry

Abstract

Urine samples have been analyzed for silicon using graphite furnace atomic absorption spectrometry. The samples were simply diluted(1+349) with distilled water and introduced into pyrocoated graphite tube together with nickel modifier. Atomic absorption signal was recorded at 251.6nm wavelength. Under these conditions, the detection limits of silicon are less than 0.7mg/ml for urine sample. The quantitative performance of the proposed technique applied to urine samples was compared with that obtained from inductively coupled plasma emission spectrometry.