title: Elevated concentrations of primordial radionuclides in sediments from the Reedy River and surrounding creeks in Simpsonville, South Carolina.
abstract: A gamma-ray survey and analysis of 16 riverbed samples from the Reedy River watershed near Simpsonville, SC were conducted and compared with national and international studies of primordial radionuclides. The study reported here follows on a recent discovery of anomalously high uranium concentrations in several private well waters in the area. An HPGe spectrometer was used for quantification of gamma emitting radionuclides in the sediments. All sediments contained radionuclides from the uranium and thorium series as well as (40)K. Uranium-238 concentrations in sediment samples ranged from 11.1 to 74.2Bqkg(-1). The measured radionuclide concentrations were compared with data from UNSCEAR and NURE reports. The river and stream sediment data were augmented by in situ NaI(Tl) gamma-ray spectrometer measurements. Comparisons between the ex situ and in situ measurements indicate equivalently distributed uranium in the surface soils and stream sediments, the source of which is likely attributed to the monazite belts that are known to exist in the area.
authors.affiliation: Clemson University, Department of Environmental Engineering and Science, 342 Computer Court, Clemson, SC 29634-0919, USA.
authors.forename: Brian A
authors.initials: BA
authors.lastname: Powell
authors.forename: Lara D
authors.initials: LD
authors.lastname: Hughes
authors.forename: Aurelie M
authors.initials: AM
authors.lastname: Soreefan
authors.forename: Deborah
authors.initials: D
authors.lastname: Falta
authors.forename: Michael
authors.initials: M
authors.lastname: Wall
authors.forename: Timothy A
authors.initials: TA
authors.lastname: DeVol
mesh_terms: D019015:Geologic Sediments / Q000032:analysis; D011197:Potassium Radioisotopes / Q000032:analysis*; D011834:Radiation Monitoring; D011883:Radium / Q000032:analysis*; D045483:Rivers; D012990:Soil Pollutants, Radioactive; D013022:South Carolina; D013910:Thorium / Q000032:analysis*; D014501:Uranium / Q000032:analysis*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D011197:Potassium Radioisotopes; D012990:Soil Pollutants, Radioactive; D014875:Water Pollutants, Radioactive; D014501:Uranium; D013910:Thorium; D011883:Radium