【摘要】 本文报导了¹³⁷Cs、^?0Co双核素示踪法研究它们在扁藻、轮虫、泥（虫廿）、对虾、罗非鱼等重要水产品体内的积累与分布。并以单核素示踪进行比较。结果表明:除对虾以外的其他生物体内^?0Co 的积累大于¹³⁷Cs;胃肠和肝脏是鱼类积聚^?0Co、¹³⁷Cs 的主要器官,而对虾的头胸部和附肢是积聚^?0Co的主要部位,¹³⁷Cs在对虾体内倾向于全身性分布。更多还原

【Abstract】 Phytoplankton （platymonas sp.）, rotifer （Brachionus plicatilis Muller）, clam（Arca granosa Linnus）, shrimp （Penaeus penicillatus Alcock） and fish （Tilapia mos-sambica Poster） were respectively. cultured in sea water with ⁶⁰Co (5×10^-9 Ci/l) and¹³⁷Cs (5×10^-8Ci/l) The accumulative ability of radioactive substance in different organism and thedistribution of these radioactive substance in accumulated organism were studied, Ge（Li） gamma-ray detector and S-80 type multi-analyser were used for measuring ra-dioactivity of samples. It was found that in phytoplankton, rotifer, clam and fish the accumulativeability of ⁶⁰Co is greater than that of ¹³⁷Cs. The critical organism for accumulation of⁶⁰Co is phytoplankton and clam, and that of ¹³⁷Cs is phytoplankton and shrimp. In fishthe accumulative organs of ⁶⁰Co and ¹³⁷Cs are stomach, intestine and liver. In shrimpsaccumulative organs of ⁶⁰Co are head and chest, and ¹³⁷Cs distributes in the whole bodyof the shrimp. The different rasults on degree of accumulation of ⁶⁰Co and ¹³⁷Cs in every organ ofclam, which are obtained by two tracer methods, i.e. with single nuclide, ⁶⁰Co or¹³⁷Cs, and with both the nuclides, may be due to the variant experimental period inour studies.更多还原