caa a22 4500 469112352 CHVBK 20180323133114.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF02040482 doi (NATIONALLICENCE)springer-10.1007/BF02040482 The measurement of222Rn in drinking water by low-level liquid scintillation counting [Elektronische Daten] [J. Barnett, J. McKlveen] Radon-222 (Rn) has universally been found in well water. Non-stagnant ground water is collected at the well head while the well is pumping. The water is adjusted to a slow, non-aerated, steady flow through a clear tube, and a 500 ml glass bottle is filled. The sample is tightly capped after a high meniscus has developed. In the laboratory, standard 22 ml glass vials are filled with 10 ml of a toluene based mineral oil LS cocktail. Then, two 5 ml sample aliquots are pipetted into the vial. Vials are capped tightly, shaken vigorously, and placed in the liquid scintillation (LS) counter. Secular equilibrium is established in approximately 4 hours, after which samples are counted for 100 minutes each. The counting efficiency for Rn and progeny ranges between 315 to 345 percent depending on the chosen spectral window. The average background is about 6 cpm. A total of 28 wells were tested for Rn in the Carefree-Cave Creek, Arizona, USA area. The area's geometric average Rn concentration was found to be 46.5 Bq·l−1. The associated estimated lung dose is 0.51 mSv·y−1. Akadémiai Kiadó, 1992 Barnett J. Nuclear Engineering Sciences Program, Electrical Engineering Department, College of Engineering and Applied Sciences, Arizona State University, 85287-5706, Tempe, AZ, (USA) aut McKlveen J. Nuclear Engineering Sciences Program, Electrical Engineering Department, College of Engineering and Applied Sciences, Arizona State University, 85287-5706, Tempe, AZ, (USA) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 161/2(1992-08-01), 357-364 0236-5731 161:2<357 1992 161 10967 https://doi.org/10.1007/BF02040482 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02040482 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barnett J. Nuclear Engineering Sciences Program, Electrical Engineering Department, College of Engineering and Applied Sciences, Arizona State University, 85287-5706, Tempe, AZ, (USA) aut NATIONALLICENCE 700 1- McKlveen J. Nuclear Engineering Sciences Program, Electrical Engineering Department, College of Engineering and Applied Sciences, Arizona State University, 85287-5706, Tempe, AZ, (USA) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 161/2(1992-08-01), 357-364 0236-5731 161:2<357 1992 161 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer