title: Epithermal neutron activation, radiometric, correlation and principal component analysis applied to the distribution of major and trace elements in some igneous and metamorphic rocks from Romania.
abstract: Six major (Na, Al, K, Ca, Ti, Fe) and 28 trace (Sc, Cr, V, Mn, Co, Zn, Cu, As, Br, Sr, Rb, Zr, Mo, Sn, Sb, Ba, Cs, La, Ce, Nd, Eu, Sm, Tb, Hf, Ta, W, Th and U) elements were determined by epithermal neutron activation analysis (ENAA) in nine Meridional Carpathian and Macin Mountains samples of igneous and metamorphic rocks. Correlation and principal factor analysis were used to interpret data while natural radionuclides radiometry shows a good correlation with ENAA results.
authors.affiliation: National Institute of Research and Development for Physics and Nuclear Engineering Horia-Hulubei, P.O. Box MG-6, 077125 Magurele, Ilfov, Romania.
authors.forename: C I
authors.initials: CI
authors.lastname: Cristache
authors.forename: O G
authors.initials: OG
authors.lastname: Duliu
authors.forename: O A
authors.initials: OA
authors.lastname: Culicov
authors.forename: M V
authors.initials: MV
authors.lastname: Frontasyeva
authors.forename: C
authors.initials: C
authors.lastname: Ricman
authors.forename: M
authors.initials: M
authors.lastname: Toma
mesh_terms: D019015:Geologic Sediments / Q000032:analysis*; D008670:Metals / Q000032:analysis*; D025341:Principal Component Analysis; D011868:Radioisotopes / Q000032:analysis; D011874:Radiometry; D012383:Romania; D014131:Trace Elements / Q000032:analysis*
chemical_list: D008670:Metals; D011868:Radioisotopes; D014131:Trace Elements