Ultramicro atomic-absorption spectroscopy with a tungsten-filament atom-reservoir.
The detection and measurement of traces of zinc, lead, copper and silver by atomic-absorption spectroscopy, with a tungsten-filament atom-reservoir (TFAR), hollow-cathode lamps and limited-field viewing is described. The performance of this atom cell is compared with that of the carbon-filament atom-reservoir for determination of lead. Greater sensitivity and fewer matrix effects are observed with the TFAR system. The lifetime of the tungsten filament is almost indefinite.
Cantle
J E
JE
Chemistry Department, Imperial College of Science and Technology, London, S.W.7, 2AY, U.K.
West
T S
TS