226Ra and 228Ra determination in mineral waters--comparison of methods.
A comparison of different radiochemical separation procedures and measurement techniques used to determine the activity concentration of (226)Ra and (228)Ra in water is made with respect to accuracy, detection limits and turn-around time. Radium-226 activity concentration was determined by the radon emanation technique, alpha-particle and gamma-ray spectrometry. To determine the (228)Ra activity concentration, four different techniques were used: low-level liquid scintillation counting, low-level proportional counting, alpha-particle and low-level gamma-ray spectrometry.
Vasile
M
M
European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Geel, Belgium. mirela.vasile@ec.europa.eu
Benedik
L
L
Altzitzoglou
T
T
Spasova
Y
Y
Wätjen
U
U
de Orduña
R González
RG
Hult
M
M
Beyermann
M
M
Mihalcea
I
I
D000512:Alpha Particles; D057230:Limit of Detection; D008722:Methods; D008900:Mineral Waters / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods*; D011883:Radium / Q000032:analysis*; D015203:Reproducibility of Results; D012588:Scintillation Counting; D013051:Spectrometry, Gamma; D013057:Spectrum Analysis; D014875:Water Pollutants, Radioactive / Q000032:analysis*
D008900:Mineral Waters; D014875:Water Pollutants, Radioactive; D011883:Radium