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Determination of 210Pb and 210Po in water using the extractive scintillation cocktail Polex? |
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| Institution: | 1. Laboratory of Dosimetry and Radiation Protection, Faculty of Physics, Sofia University “St. Kliment Ohridski”, 5 James Bourchier Blvd, 1164 Sofia, Bulgaria;2. Kozloduy Nuclear Power Plant, PP1, 3321 Kozloduy, Bulgaria;1. AMES d.o.o., Brezovica pri Ljubljani, Slovenia;2. Jo?ef Stefan Institute, Ljubljana, Slovenia;3. Faculty of Health Sciences, Ljubljana, Slovenia;1. University of Tartu, Institute of Physics, Riia 142, 51014 Tartu, Estonia;2. Tallinn University of Technology, Department of Chemical Engineering, Ehitajate tee 5, 19086 Tallinn, Estonia;1. Nuclear Physics Institute AS CR, Na Truhlá?ce 39/64, CZ-18086 Prague, Czech Republic;2. National Radiation Protection Institute, Barto?kova 1450/28, CZ-14000 Prague, Czech Republic |
| Abstract: | Method validation was performed to achieve the accreditation for our determination method of 210Pb and 210Po in water. A Pb(NO3)2 carrier is added to the sample and lead is precipitated with Na2SxH2O. 210Po is co-precipitated and the extractive scintillation cocktail Polex? is used to determine 210Po and 210Pb. Uranium is also extracted by Polex?. It can be removed by washing the precipitate with 1% HNO3. The ingrowth of 210Pb from 222Rn during transportation time must be calculated. It has to be subtracted from the original 210Pb in the sample and taken into account for the calculation of the lower limit of detection. |
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