Simultaneous Determination of Trace Elements using Multi-Element Graphite Furnace Atomic Absorption Spectrometry

摘要: Simultaneous Multi-Element Atomic Absorption Spectrometer (SIMAA 6000) has been used to determine groups of elements (up four) simultaneously, by using 2-operating and 4-operating modes. A direct, simple, fast accurate methodology for the simultaneous multi-element determination have developed. Compromised conditions (e.g. temperature program use universal modifier) mode determined. The carefully optimized taking into account all analytes be optimization depends on determined simultaneously matrix. Also, a powerful matrix modifier in order increase stability (especially volatile elements). This permitted common including less elements. Pd+Mg mixture stabilized high mid For elements, had no stabilization effect these But this case prevented formation refractory compounds which volatilization process Ir coating tube or platform extended significantly lifetime. sensitivity values were comparable those single-element. decreasing is result higher atomization and/or lamp intensities. detection limits than single-element mainly as intensities compared mode. Another could cause temperature. operational (the temperatures, modifier, operating mode) affected absorption signals appeared terms increasing appearance time, peak height, width. accuracy methods was tested analyzing number certified materials concentrations obtained good agreement with