Abstract
210Pb and 210Po have been measured by alpha spectrometry following room‐temperature plating in ordinary widemouthed sample jars. Use of two different isotopes of polonium (208Po and 209Po) as yield monitors facilitates measurement of 210Pb and 210Po when both must be determined on the same samples. Hot HCl leaching and plating improves the resolution of alpha spectra for samples high in interfering iron. 226Ra can be quantitatively electrodeposited from aqueous solution onto steel disks in disposable plating cells with an inexpensive 9‐V “battery eliminator” as a power supply. The resulting source can be measured directly by alpha spectrometry, eliminating the need for a separate detector system when determining supported 210Pb activity.
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