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 。
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.
出处
《环境科学学报》
CAS
CSCD
北大核心
2002年第5期609-613,共5页
Acta Scientiae Circumstantiae
基金
国家自然科学基金资助项目(39870 1 50 )
浙江省自然科学基金资助项目
关键词
积累
迁移
消长
氚水
模拟生态系
缢蛏
中华乌塘鳢
环境行为
海水
HTO
simulated ecosystem
Sinonovacula constricta
Bostrichthys sinensis
environmental behavior
