Abstract
A simple, demountable hollow-cathode excitation source for the analysis of solutions is described which allows water cooling, high emission intensity, discharge shielding, and extreme ease of operation. A graphite hollow-cathode assembly is shown which is particularly suitable for the analysis of acidic digestion residues. A high salt concentration can be used with the tube, allowing a lithium and potassium carrier salt-spectroscopic buffer which controls effects caused by matrix variation. Analyses of lead in biological materials are used to demonstrate the capabilities of the tube.
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