Determination of trace levels of calcium in steels by carbon-furnace atomic-absorption and atomic-emission spectrometry.
Methods are described for the determination of trace levels of calcium in steels by atomic-absorption and atomic-emission spectrometry with a carbon furnace for atomization and excitation. In both cases, a commercial electrothermal atomic-absorption instrument was used. Samples were analysed after dissolution in a mixture of nitric, hydrochloric, and hydrofluoric acids.
Alvarado
J
J
Chemistry Department, Simon Bolivar University, Apartado 80659, Caracas 1080, Venezuela.
Campos
F
F
Ottaway
J M
JM