NDLI: Rare earth elements, thorium and uranium in ores of the North-Latium (Italy)

Content Provider	Springer Nature Link
Author	Capannesi, Geraldo Rosada, Alberto Manigrasso, Maurizio Avi, Pasquale
Copyright Year	2011
Abstract	In geochemistry, the distribution of the Rare Earth Elements (REEs) in earth crust and mantle allows to understand geochemical cycles and origin and age of igneous rocks. In this article REEs (Ce, Dy, Eu, La, Nd, Sm, Tb, and Yb), Th and U in ores of the North-Latium (Bracciano area, Ceriti Mt., Fate Mt., Sabatini Mt., Vulsini Mt., Acqua Rossa basin), have been investigated for evaluating the extraction feasibility for industrial applications. 107 samples were irradiated in the rotating rack of the TRIGA Mark II reactor of the R.C. Casaccia (ENEA) at neutron flux of 2.6 × 10$^{12}$ n × cm$^{−2 }$× s$^{−1}$ for 12 h together with primary and secondary standards. The gamma spectrometry measurements were performed after 8 h, 3 and 30 days of decay by means of HPGe detector (FWHM 1.75 keV at 1332.5 keV, peak/Compton ratio 55.1, relative efficiency of 22%) connected to a multi-channel analyzer. The total REE mean content is 105 μg g$^{−1}$, ranging widely between 2.23 and 410.5 μg g$^{−1}$ (average coefficient of variation 112%). A similar behavior is found for Th and U: their average levels are 13.5 and 6.0 μg g$^{−1}$, respectively. A quite good correlation between REEs and Th (and U) is found for Ceriti Mt. (r $^{2}$ > 0.8) whereas for the other areas the correlation is <0.7. The results obtained evidence the low U content in the investigated locations.
Starting Page	163
Ending Page	168
Page Count	6
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	291
Issue Number	1
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-05-31
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rare earth elements Thorium Uranium Ores INAA North-Latium Nuclear Chemistry Inorganic Chemistry Diagnostic Radiology Physical Chemistry Nuclear Physics, Heavy Ions, Hadrons
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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