简介:2.1 The radium in the water sample is collected by coprecipitation with
barium and lead sulfate and purified by reprecipitation from EDTA solution. Both
radium-226 and radium-228 are collected in this manner. After a 3简介:2.1 The radium in the water sample is collected by coprecipitation with
barium and lead sulfate and purified by reprecipitation from EDTA solution. Both
radium-226 and radium-228 are collected in this manner. After a 36-hr ingrowth
of actinium-228 from radium-228, the actinium-228 is carried on yttrium oxalate,
purified and beta counted. If radium-226 is also desired, the activity in the
supernatant can be reserved for coprecipitation on barium sulfate, dissolving in
EDTA and storing for ingrowth in a sealed radon bubbler.详细>