研究论文
孙平跃,史建君,李明云,王寿祥.氚水在模拟海水生态系统中的积累、迁移和消长[J].环境科学学报,2002,22(5):609-613
氚水在模拟海水生态系统中的积累、迁移和消长
- Accumulation,transference and dynamical disappearance of HTO in simulated marine ecosystem
- 基金项目：国家自然科学基金资助项目(39870150);浙江省自然科学基金资助项目
- 作者
- 单位
- 孙平跃
- 宁波大学海洋与水产系,宁波 315211
- 史建君
- 浙江大学原子核农业科学研究所(华家池校区),杭州 310029
- 李明云
- 宁波大学海洋与水产系,宁波 315211
- 王寿祥
- 浙江大学原子核农业科学研究所(华家池校区),杭州 310029
- 摘要：运用同位素示踪技术研究了氚水在模拟海水生态系统中的积累、迁移等特性.试验期间,海水中氚的含量随时间逐渐减少.底质对吸湿性水氚的积累呈递增趋势,而对结晶水氚没有明显的积累.自由水氚是氚水在缢蛏和中华乌塘鳢体内的主要存在形式,结合态氚在这两种海洋生物中的含量均很低.缢蛏和中华乌塘鳢对氚水的富集系数均小于 1,说明它们对氚水都没有明显的富集效应.
- Abstract：Some characteristics such as accumulation,transference of HTO in simulated marine ecosystem were studied with isotope tracer technique. The results showed that during the experimental period the specific activity of HTO in seawater decreased with time. The content of free water tritium in sediment appeared an increasing tendency all the time and was much higher than that of organically bound tritium. Free water tritium was the main form of HTO existed in Sinonovacula constricta and Bostrichthys sinensis. The radioactive contents of organically bound tritium were very low and the concentration factors were both below 1 in these two marine animals. Our study showed both of the two kinds of animals had no significantly concentrating capability for HTO.
- Key words：HTO simulated ecosystem Sinonovacula constricta Bostrichthys sinensis environmental behavior
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