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Metal content in caviar of wild Persian sturgeon from the southern Caspian Sea

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Abstract

Caviar (fish roe of sturgeon) may contain high levels of contaminants. An inductively coupled plasma-optical emission spectrometer and a direct mercury analyzer were used to assess the contents of four heavy metals (Hg, Se, Sn, and Ba) in caviar of wild Persian sturgeon sea foods. The levels of Hg ranged from 1.39 to 1.50 μg g−1, Se from 0.90 to 1.10 μg g−1, Sn from 0.23 to 0.33, and Ba from 0.71 to 1.17 μg g−1. Evaluation of these levels showed that except for Hg, the average concentrations of other metals are significantly lower than adverse level for the human consumption when compared with Food and Agricultural Organization of the United Nations and World Health Organization permissible limits. Therefore, their contribution to the total body burden of these heavy metals can be considered as negligibly small given that caviar is a luxury product.

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Correspondence to S. Sobhanardakani.

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Responsible editor: Philippe Garrigues

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Hosseini, S.M., Sobhanardakani, S., Navaei, M.B. et al. Metal content in caviar of wild Persian sturgeon from the southern Caspian Sea. Environ Sci Pollut Res 20, 5839–5843 (2013). https://doi.org/10.1007/s11356-013-1598-9

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Keywords

  • Caviar
  • Toxic metal
  • Persian sturgeon
  • Caspian Sea