Man C K, Kwok Y H
Department of Applied Physics, Hong Kong Polytechnic University, Hung Hom, Kowloon.
Appl Radiat Isot. 2000 Feb;52(2):237-41. doi: 10.1016/s0969-8043(99)00122-0.
The uptake and discharge rates of 137Cs by fresh water fish at different radionuclide concentrations have been studied. A dual compartment model was used to fit the experimental data. The discharge rates have been found to be negligible for the duration of the experiment of 10 d. The uptake rates were independent of radionuclide concentrations for a particular type of fresh water fish and were different for different types of fish. The uptake rates of carp, tilapia and snakehead were 1.58, 1.66 and 2.23, in unit of 10(-6) h-1, respectively. It was also estimated that the consumption of fresh water fish, even if the water were contaminated as much as that in the Chernobyl accident, leads to negligible latent cancer fatality to the Hong Kong population.
研究了不同放射性核素浓度下淡水鱼对137Cs的摄取和排出速率。采用双室模型拟合实验数据。在为期10天的实验期间，发现排出速率可忽略不计。对于特定类型的淡水鱼，摄取速率与放射性核素浓度无关，不同类型的鱼摄取速率不同。鲤鱼、罗非鱼和乌鳢的摄取速率分别为1.58、1.66和2.23（单位：10(-6) h-1）。还估计，即使淡水鱼的食用量与切尔诺贝利事故中受污染的量相同，香港居民因食用淡水鱼而导致的潜在癌症死亡人数也可忽略不计。
