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Atomic absorption characteristics of germanium

1968; Elsevier BV; Volume: 23; Issue: 8 Linguagem: Inglês

10.1016/0584-8547(68)80035-7

1873-3565

Ronald E. Popham, W. G. Schrenk,

Laser-induced spectroscopy and plasma

Using a demountable hollow-cathode lamp and a Jarrell-Ash 0.5 m grating monochromator with associated a.c. electronics, the atomic absorption characteristics of germanium were studied in a nitrous oxide-acetylene laminar flow flame with a Jarrell-Ash Tri-Flame burner and in an oxyacetylene flame with a medium bore Beckman total consumption burner. For the unresolved 2651.18–2651.58 Å doublet under optimum operating conditions and utilizing a 50% vv acetone solution, the detection limits were 0.5 and 5.0 ppm in reducing nitrous oxide-acetylene and oxyacetylene flames, respectively. By proper choice of flame and solvent system, an analytical range of from 1 to 1000 ppm germanium was easily obtainable. This study included the effects of organic solvents, fuel-to-oxidant ratios, and the position of the hollow cathode beam in the flame on the absorption of germanium. Elements commonly associated with germanium ores and the common inorganic acids were checked for interference effects for both aqueous and acetone solutions in the two flames studied.