Sensitivity enhancement in flameless atomization systems by use of a rigid tungsten collar.
Sensitivity enhancement was achieved in a flameless atomization system by the insertion of a rigid tungsten "collar" 1 cm long and 0.5 mm thick. With such a collar the electrical and thermal properties of the furnace were essentially those of the original tube, and the existing power pack could be used without modification. A significant improvement in sensitivity was found for the majority of the sixteen elements studied. The system did not appear to suffer from the deformation problems associated with other systems of atomization from metal surfaces.
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Metropolitan Police Forensic Science Laboratory, 109, Lambeth Road, London SE1, England.