摘要
本文报道了海洋生物通过海水途径对铯、钴、锌的浓集与排出研究的实验结果。实验生物为珍珠贝、梭子蟹、黑鲷和扇贝，均取自广东大亚湾海域，在分别含一定浓度的Ｃｓ、Ｃｏ或Ｚｎ的海水中培养７ｄ，进行浓集实验，然后以浅海挂养（贝类）或清洁海水池养（蟹类和鱼类）的方式进行排出实验，用原子吸收分光光度计测定生物不同组织或器官中元素的含量。实验结果表明，Ｃｓ在珍珠贝闭壳肌中的浓集因子最大（１９），在鳃中最低（４）；在梭子蟹壳中的饱和平衡期最长，约为１１７ｄ，表明壳对Ｃｓ的新陈代谢作用较缓。Ｃｏ和Ｚｎ在实验生物中的吸收过程很长，尤以在黑鲷肉中最为突出，其值达６６０ｄ；相应的其生物半排期也较长。
This paper describes the experiment of stable Cs,Co and Zn concentration and excretion of marine organisms through seawater pathway.All the experimental marine organisms,Pteria martensii Dunkar,Portunus dayawanensis,Sparus macrocephalus,Zool scallop,were collected from Daya Bay sea zone.First,the experimental organisms were fed seven days in seawater which contained definite Cs,Co and Zn for concentration experiment,then cultivated by means of suspended breeding in shallow sea zone (for shell fish) and pool breeding in clean seawater pool (for crab and sea fish) for excretion experiment,finally measured with atomic absorption spectrometry (AAS) to determint the element concentrations in different tissues or organs of organisms.The results of this experiment show that the Cs concentration factor in tissue of Pteria martensii Dunkar is maximum for 19,the minimum for 4 in gill;it will take longer time,about 117 days,to get the equilibrium in parts of shell of Portunus dayawanensis;for co procedure,especially in the tissues of Sparus macrocephalus for about 660 days,the biological half life are longer correspondingly. (
出处
《辐射防护》
CAS
CSCD
北大核心
1997年第2期114-121,共8页
Radiation Protection
关键词
海洋生物
浓集
排出
铯
钴
锌
海水途径
Marine Organisms,Concentration Factors,Cs,Co,Zn,Seawater Pathway)
