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An ENAA and PGAA comparative study of anoxic Black Sea sediments

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Abstract

A comparative study performed by means of both epithermal neutron activation analysis (ENAA) and prompt gamma neutron activation analysis (PGAA) concerning the distribution of 9 elements (Na, Al, Cl, K, Ca, Ti, Mn Fe and Sm) in unconsolidated sediments collected from the Black Sea anoxic region is presented. Principal component analysis (PCA) was used as a supplementary method in interpreting experimental data. The final results have shown that eight of them (Na, Al, Cl, K, Ti, Mn, Fe and Sm) have concentrations which differ by less than 30% from the corresponding concentrations of Upper Continental Crust (UCC), confirming the continental origin of sediments. At the same time, Ca concentration was about six times higher than that of UCC, this significant enrichment being due to the presence of the neighbouring oxygenated zone of considerable deposits of shell debris, characteristic of the Western Black Sea Continental Platform. Excepting Na and Mn, the concentrations of all other elements involved in this intercomparison were coincident within one standard deviation which attests the accuracy of this test. At the same time, PCA revealed the presence of five clusters, which could be put into concordance with the mineralogical composition of sediments, each of them consisting in equal proportions of elements determined by both methods.

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Author notes

  1. O. Culicov

    Present address: National Institute for Research and Development in Electrical Engineering, 313 Splaiul Unirii, 060032, Bucharest, Romania

Authors and Affiliations

  1. National Institute of Research and Development for Physics and Nuclear Engineering “Horia - Hulubei”, P.O. Box MG - 6, 077125, Magurele (Ilfov), Romania

    C. Cristache & M. Toma

  2. Institute of Isotopes, Hungarian Academy of Sciences, P.O. Box 77, H-1525, Budapest, Hungary

    K. Gméling

  3. Joint Institute of Nuclear Research, 6, Joliot Curie str., 141980, Dubna, Russia

    O. Culicov & M. V. Frontasyeva

  4. Department of Atomic and Nuclear Physics, University of Bucharest, P.O. Box MG-11, 077125, Magurele (Ilfov), Romania

    O. G. Duliu

Authors
  1. C. Cristache
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  2. K. Gméling
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  3. O. Culicov
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  4. M. V. Frontasyeva
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  5. M. Toma
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  6. O. G. Duliu
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Correspondence to O. G. Duliu.

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Cristache, C., Gméling, K., Culicov, O. et al. An ENAA and PGAA comparative study of anoxic Black Sea sediments. J Radioanal Nucl Chem 279, 7–12 (2009). https://doi.org/10.1007/s10967-007-7214-z

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  • DOI: https://doi.org/10.1007/s10967-007-7214-z

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