50%, 75% and 90% adsorption efficiency.
(units)
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Determining adsorption efficiency by subsequently exposing radium adsorbing films
to the same sample. Sample volume : 80 ml, sheets : 20mm x 20mm Polyamid 66, covered
on both sides with MnO2 , exposition time : 6 h per film. Samples are mineral waters
from several European countries. Error bars are ±1s counting statistics. Dashed lines : slopes for 50%, 75% and 90% adsorption efficiency. (units) |