title: Gross alpha determination in drinking water using a highly specific resin and LSC.
abstract: Some results of experiments concerning a new highly specific resin for the extraction of alpha-emitting nuclides from drinking water samples are presented. The product used during these experiments is a new extraction chromatographic resin which consists of a combination of several reagents and extractants supported on inert polymeric substrates, called "Resin" hereafter. It shows strong affinity for Actinides in the tri-, tetra- and hexavalent oxidation state, as well as for radium, even in presence of large amounts of calcium. Gross-alpha activities were determined using alpha-/beta-discrimination liquid scintillation counting (alpha-/beta-LSC) by direct measurement of the dried resin after extraction. Counting conditions were optimised accordingly. A method for the determination of alpha-emitting nuclides in drinking water was developed and tested using intercomparison and spiked drinking water samples.
authors.affiliation: Eichrom Europe, Parc de Lormandière, Bât. C, Rue Maryse Bastié, Campus de Ker Lann, Bruz 35170, France. shappel@eichrom.com
authors.forename: S
authors.initials: S
authors.lastname: Happel
authors.forename: P
authors.initials: P
authors.lastname: Letessier
authors.forename: W
authors.initials: W
authors.lastname: Ensinger
authors.forename: J H
authors.initials: JH
authors.lastname: Eikenberg
authors.forename: A H
authors.initials: AH
authors.lastname: Thakkar
authors.forename: E P
authors.initials: EP
authors.lastname: Horwitz
mesh_terms: D000512:Alpha Particles; D002852:Chromatography, Ion Exchange / Q000379:methods*; D007475:Ion Exchange Resins; D011868:Radioisotopes / Q000032:analysis*; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000379:methods*; D012680:Sensitivity and Specificity; D014875:Water Pollutants, Radioactive / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D007475:Ion Exchange Resins; D011868:Radioisotopes; D014875:Water Pollutants, Radioactive