Measurement of 226Ra and 228Ra in water by gamma-ray counting after preconcentration on ion-exchange resin.

A rugged resin concentration method followed by gamma counting was developed for measuring 226Ra and 228Ra in drinking water. Using typical distribution system pressure, 310 kPa (45 psig), radium in a 20-L sample was concentrated 100-fold onto 200 mL of ion-exchange resin beads that were then sealed in a glass jar for gamma activity measurement. Parameters… CONTINUE READING