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Determination of multi-element composition of Vietnamese marine sediment and tuna fish by k 0-standardized neutron activation analysis

Abstract

The k 0-standardized neutron activation analysis (k 0-NAA) has been applied for determination of multiple elements (25 elements: Al, As, Ba, Br, Ca, Cl, Co, Cr, Cs, Cu, Eu, Fe, Hg, K, La, Mg, Na, Rb, Sc, Se, Sm, Th, Ti, V and Zn) in marine sediment and tuna fish. About 50 marine sediment and 9 tuna fish samples were collected in two coastal areas of Vietnam. The health risk index (HRI) values of As and Br were higher than 1.0 for the tuna fish. Also, HRI value of Hg was 8.92 × 10−1 indicating a relatively high potential health risk, whiles Co and Mn with HRIs = 1.56 × 10−4 and 8.56 × 10−4, respectively, have the lowest potential health risks. Average enrichment factors using Al as a reference element (EF Al) were higher than 1.5 for Eu, La, Zn, Th, Cs and As in which the highest EF Al value for As was higher than 10. This study showed that the HRI value of As in the tuna fish correlated positively with the EF Al value for the element in the marine sediment.

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Acknowledgments

The financial support by Vietnam Atomic Energy Institute (VINATOM) for the FNCA/NAA project in Vietnam is gratefully acknowledged. This research has also been supported by the Ministry of Education, Culture, Science and Technology (MEXT) of Japan. The authors would like to thank Dr. Nguyen Trong Ngo and the operators of Dalat research reactor for their supporting the implementation of this work.

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Correspondence to Manh-Dung Ho.

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Ho, MD., Tran, QT., Ho, VD. et al. Determination of multi-element composition of Vietnamese marine sediment and tuna fish by k 0-standardized neutron activation analysis. J Radioanal Nucl Chem 309, 235–241 (2016). https://doi.org/10.1007/s10967-016-4761-1

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  • DOI: https://doi.org/10.1007/s10967-016-4761-1

Keywords

  • K 0-standardized neutron activation analysis
  • Marine environment
  • Enrichment factor
  • Estimated daily intake
  • Health risk index