简介:2.1 An aliquot of a preserved water sample is evaporated to a small volume
and transferred quantitatively to a tared 2-in. stainless steel counting
planchet. The sample residue is dried to constant weight, reweighed to简介:2.1 An aliquot of a preserved water sample is evaporated to a small volume
and transferred quantitatively to a tared 2-in. stainless steel counting
planchet. The sample residue is dried to constant weight, reweighed to determine
dry residue weight, and then counted for alpha and/or beta radioactivity.
2.2 Counting efficiencies for both alpha and beta particle activities are
selected according to the amount of sample solids from counting efficiency vs.
sample solids standard curves.详细>