Estimating and comparing the detection limits in atomic-absorption spectrometry

Experimental studies on spatial distributions of atoms surrounding an individual solute particle vaporizing in an analytical flame

“…quantitative. Only a few attempts have been made to achieve quantitative results for the analysis of solids slurries, for example, the determination of alkali metals in plant leaves (2) and rocks (3) and of tin in tin-ore concentrates (4). Finally, the recent, excellent work of Willis (5), who aspirated aqueous suspensions of various geological materials (rocks, minerals, stream sediments) into a flame, showed that the atomization efficiency of a given metal varies by a factor of only about two among rocks of very different types if the solid is ground finely enoughl Atomic absorption procedures involving nonflame furnace atomization techniques for direct analysis of solids seem to have been somewhat more widely investigated, and have been reviewed by others (6,7).…”

Effect of dissociation on the distribution of atoms from an aerosol particle in an analytical flame

“…The laser-related current pulse is detected with electrodes and monitored with conventional electronics. LEI, a special case of the optogalvanic effect (1), has been directed toward analytical flame spectrometry (2)(3)(4)(5)(6)(7)(8)(9)(10)(11). Detection limits which are superior to those obtained with existing flame spectrometric methods have been reported for many metals (3)(4)(5).…”

“…LEI, a special case of the optogalvanic effect (1), has been directed toward analytical flame spectrometry (2)(3)(4)(5)(6)(7)(8)(9)(10)(11). Detection limits which are superior to those obtained with existing flame spectrometric methods have been reported for many metals (3)(4)(5). Since the LEI signal depends on the analyte transition probability and ionization potential, many transitions which are not suitable for purely optical techniques have been used successfully (3)(4)(5).…”

“…Detection limits which are superior to those obtained with existing flame spectrometric methods have been reported for many metals (3)(4)(5). Since the LEI signal depends on the analyte transition probability and ionization potential, many transitions which are not suitable for purely optical techniques have been used successfully (3)(4)(5). Two photon (5) and stepwise excitation (6, 7) schemes have produced increased selectivity and sensitivity in some cases.…”

“…Since the LEI signal depends on the analyte transition probability and ionization potential, many transitions which are not suitable for purely optical techniques have been used successfully (3)(4)(5). Two photon (5) and stepwise excitation (6, 7) schemes have produced increased selectivity and sensitivity in some cases. Excited states of lanthanum, yttrium, and scandium oxides have been observed in seeded hydrogen/air flames (8).…”