Application of the graphite furnace to the determination of trace iron in gold and silver.
Atomic-absorption analysis using a graphite furnace is a powerful technique for the determination of nanogram amounts of iron. It can be applied to the determination of traces of iron in gold and silver. These metals may be removed from solution by reduction to metallic gold and precipitation as silver chloride respectively. Iron is not co-precipitated. The iron content can be determined in 50-100 mg of the noble metals with an error of about 7% (or 0.1 ppm).
Kragten
J
J
Natuurkundig Laboratorium Universiteit van Amsterdam Valckenierstraat 65, Amsterdam-C The Netherlands.
Reynaert
A P
AP