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.

@article{Cristache2009EpithermalNA,
  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.},
  author={Carmen Cristache and O G Duliu and Otilia A Culicov and Marina Viladimirovna Frontasyeva and C Ricman and Magdalena Toma},
  journal={Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine},
  year={2009},
  volume={67 5},
  pages={901-6}
}
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.