Continuum Source Atomic Absorption Spectrometry: Past, Present and Future Aspects - A Critical Review

Determination of sulfur in crude oil using high-resolution continuum source molecular absorption spectrometry of the SnS molecule in a graphite furnace

“…This approach was discussed in detail by Becker-Ross et al [10], Heitmann et al [11] and Welz et al [12].…”

Determination of palladium, platinum and rhodium in used automobile catalysts and active pharmaceutical ingredients using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample analysis

“…Moreover, the introduction of high-resolution continuum source (HR CS) GFAAS instrumentation has represented an important step forward for this technique, significantly improving its potential to overcome spectral interferences, to adjust the sensitivity to the sample content, and even permitting to determine several analytes simultaneously, in some circumstances [23][24][25][26][27][28]. Despite these possibilities, HR CS GFAAS has not been used for the direct determination of PGMs, with only one exception (determination of Pd in airborne particulates [29]).…”

Development of a fast screening method for the direct determination of chlorinated persistent organic pollutants in fish oil by high-resolution continuum source graphite furnace molecular absorption spectrometry

“…On the other hand, the ionization is also very low due to the high ionization potential of Cl For MAS, bands of diatomic molecules that exhibit a pronounced rotational fine structure can be formed in the graphite tube vaporizer employing a molecule-forming reagent and can be monitored for quantitative determination (Welz et al, 2009). The successful application of HR-CS GF MAS is correlated with the continuum radiation source coupled to a high-resolution double monochromator and a linear charge-coupled device (CCD) array detector providing a resolution of λ/Δλ ≈ 175,000, which makes possible the use of the entire spectral region (190 -900 nm) for analytical measurement at high resolution (Welz, 2004;Welz et al, 2014). The diatomic molecules formed in the gas phase should have dissociation energies higher than 400 kJ mol -1 to ensure their stability at the temperatures of the pyrolysis and vaporization stages, and avoid formation of competitive molecules (Butcher, 2013).…”