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Cs and K in gray seals Halichoerus grypus in the southern Baltic Sea. | LitMetric

This study presents levels of Cs and K concentrations in the placentas of seals gathered in the period 2007-2015. The mean activity of Cs and K was 5.49 Bq kgw.w. and 136.6 Bq kg ww respectively. Statistically significant correlation was observed between the Cs activities in placenta and in herring-the staple food for seals. The concentrations of Cs and K were also determined in other tissues (muscle, liver, lung, and brain) of wild seals. The concentrations of Cs were from 2.59 Bq ww (lungs) to 24.3 Bq kg ww (muscles). The transfer factor values for Cs (seal tissue/fish) ranged from 0.89 to 2.42 in the case of the placentas and from 1.35 to 8.17 in the case of the muscle. For adults seal, the effective dose from Cs was 2.98 nGy h. The mean external radiation dose to pup was 0.77 nGy h from Cs and 6.69 nGy h from K.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6546647PMC
http://dx.doi.org/10.1007/s11356-019-05145-7DOI Listing

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