【摘要】 采用同位素示踪法对常见的17种水生物中²¹⁰Po含量进行了测定,还分析了虾不同部位中²¹⁰Po含量。水生物可食部分中²¹⁰Po含量范围为0.15³4.8 Bq/kg（鲜）,不同水生物可食部分中²¹⁰Po含量差别较大。甲壳类、头足类和贝类水生物对²¹⁰Po有很强的浓集能力,尤其是牡蛎、八爪鱼、螃蟹和鱿鱼中²¹⁰Po含量很高,分别为34.8、25.0、20.3和17.2 Bq/kg（鲜）,超过了我国现行国标食品中放射性物质限制浓度中的限值。虾不同部位中²¹⁰Po含量呈现规律分布,头部中²¹⁰Po含量最高,壳次之,肉最低。更多还原

【Abstract】 Concentrations of ²¹⁰Po in 17 kinds of aquatic organisms were determined by an isotope tracing method,and ²¹⁰Po concentrations in different parts of shrimps’ bodies were also measured. The concentrations of ²¹⁰Po in edible parts of aquatic organisms were 0. 15-34. 8 Bq/kg of fresh weight,and the variations between different aquatic organisms were large. Aquatic organisms of crustaceans,cephalopods,and shellfishes have strong enrichment capability for ²¹⁰Po,and especially the ²¹⁰Po concentrations in oysters,octopus,crab,squid were 34. 8,25. 0,20. 3,and 17. 2 Bq/kg of fresh weight respectively,which are higher than our national limit for the ²¹⁰Po concentration in food. ²¹⁰Po concentrations in different parts of shrimp ’s bodies presented a distribution pattern: the highest in heads,moderate in shells,and the lowest in meats.更多还原