波罗的海南部灰海豹（Halichoerus grypus）中的铯和钾。
Cs and K in gray seals Halichoerus grypus in the southern Baltic Sea.
机构信息
Institute of Meteorology and Water Management - National Research Institute, Waszyngtona 42, 81-342, Gdynia, Poland.
Central Laboratory for Radiological Protection, Konwaliowa 7, 03-194, Warsaw, Poland.
出版信息
Environ Sci Pollut Res Int. 2019 Jun;26(17):17418-17426. doi: 10.1007/s11356-019-05145-7. Epub 2019 Apr 24.
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.
本研究报告了 2007 年至 2015 年间收集的海豹胎盘内 Cs 和 K 浓度水平。Cs 和 K 的平均活度分别为 5.49 Bq kgw.w. 和 136.6 Bq kg ww。在海豹的主食鲱鱼的胎盘和 Cs 活性之间观察到了统计学上显著的相关性。还在野生海豹的其他组织（肌肉、肝脏、肺和大脑）中测定了 Cs 和 K 的浓度。Cs 的浓度范围从 2.59 Bq ww（肺）到 24.3 Bq kg ww（肌肉）。Cs 的转移系数值（海豹组织/鱼）在胎盘的情况下为 0.89 至 2.42，在肌肉的情况下为 1.35 至 8.17。对于成年海豹，Cs 的有效剂量为 2.98 nGy h。幼崽从 Cs 获得的平均外照射剂量为 0.77 nGy h，从 K 获得的剂量为 6.69 nGy h。
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