Fukatsu H, Nakayama K, Imazawa Y, Abukawa J, Higuchi H
Radioisotopes. 1982 Jan;31(1):16-20.
In order to investigate both the contamination level and distribution of radioactive nuclides in the marine environment, the concentrations of both 60Co and stable cobalt were determined. The samples collected from the sea around Japan were fishes, squids. The analytical method for 60Co was consisted of the radiochemical separation using ion exchange resins followed with the low background beta counting, and that for stable cobalt was the spectrophotometric determination. The results obtained were as follows: (1) The viscera of squids was found to enrich both 60Co and stable cobalt. (2) No 60Co was detected in fishes except the liver of bonito taken from the north west Pacific. (3) The correlation between 60Co and stable cobalt was rather good in the squids samples. (4) The enrichment factors for squids and fishes agreed well with the values reported by B. Patel or S.E. Tompson.
为了调查海洋环境中放射性核素的污染水平和分布情况，测定了⁶⁰Co和稳定钴的浓度。从日本周边海域采集的样本有鱼类和鱿鱼。⁶⁰Co的分析方法包括使用离子交换树脂进行放射化学分离，随后进行低本底β计数，稳定钴的分析方法是分光光度法测定。得到的结果如下：(1) 发现鱿鱼的内脏富含⁶⁰Co和稳定钴。(2) 除了取自西北太平洋的鲣鱼肝脏外，在鱼类中未检测到⁶⁰Co。(3) 在鱿鱼样本中，⁶⁰Co和稳定钴之间的相关性相当好。(4) 鱿鱼和鱼类的富集因子与B. 帕特尔或S.E. 汤普森报告的值吻合良好。
