放射性锆在模拟海水、底质及海洋生物系统中的动态

应用生态学报 ›› 2003, Vol. ›› Issue (6): 977-981.

放射性锆在模拟海水、底质及海洋生物系统中的动态

王春琳¹, 史建君², 孙平跃¹, 李明云¹

1. 宁波大学生命学院海洋与水产系, 宁波 315211;
2. 浙江大学原子核农业科学研究所, 杭州 310029

收稿日期:2002-07-18 修回日期:2002-11-22
通讯作者: 王春琳,男,1965年生,硕士,副教授,硕士生导师.主要从事水产养殖生态学与水产养殖学,发表论文50余篇.E-mail:chunling@pub.cnnb.net.
基金资助:
国家自然科学基金重点资助项目(39970147)

Dynamics of ⁹⁵Zr in simulated marine water-sediment-organisms system

WANG Chunlin¹, SHI Jianjun², SUN Pingyue¹, LI Mingyun¹

1. Department of Oceanography and Fisheries, Ningbo University, Ningbo 315211, China;
2. Insitute of Nuclear Agricultural Science, Zhejiang University, Hangzhou 310029, China

Received:2002-07-18 Revised:2002-11-22

摘要/Abstract

摘要： 研究了放射性锆(⁹⁵Zr)在模拟海水、底质及海洋生物间的迁移、消长的动态.结果表明,海水中⁹⁵Zr的比活度在最初4h内下降了90%以上,此后呈缓慢递减趋势;底质中⁹⁵Zr的比活度至48h达到最大值,随后逐渐降低;半褶织纹螺螺壳和螺肉的放射性百分比分别为68.7%和31.30%;大弹涂鱼的鳃、鳍、内脏、头骨、皮、脊柱和肌肉等组织的放射性百分比分别为22.80%、12.64%、34.82%、10.31%、4.48%、11.55%和3.71%.半褶织纹螺对⁹⁵Zr的积累比大弹涂鱼更强.⁹⁵Zr在海水、底质、半褶织纹螺和大弹涂鱼中浓度的大小顺序是:底质>半褶织纹螺>海水>大弹涂鱼.各分室中⁹⁵Zr浓度(即比活度)随时间变化的动态可用指数函数表达.

关键词: 锆-95, 海洋环境, 海洋生物, 沉积物

Abstract: To provide scientific evidence to evaluate the behavior of ⁹⁵Zr in ocean ecosystem,the dynamic model of the transference,accumulation and disappearance of ⁹⁵Zr among the simulated marine water,sediment and organisms was investigated using Nassarius semiplicatus and Boleophthalums pectinirostris as experimental stuffs. The result showed that ⁹⁵Zr(Bq穏^-1 or Bq穖l^-1) in the marine water was decreased more than 90% in the first 4 h,and then descended gradually. ⁹⁵Zr in sediment was increased th the peak in 48 h and then declined. The radioactivity percent of ⁹⁵Zr in the shell and muscle of Nassarius semiplicatus was 68.7% and 31.30% respectively,while the radioactivity percent was 22.80%,12.64%,34.82%,10.31%,4.48%,11.55% and 3.71%,respectively in the fill,fin,viscera,skull,skin,vertebra and muscle of Boleophthalmus pectinirostris.Nassarius semiplicatus had a greater concentrating capability of ⁹⁵Zr than Boleophthalmus pectinirostris . The order of the ⁹⁵Zr concentration was found to be sediment > Nassarius semiplicatus> water> Boleophthalmus pectinirostris .Adynamic model of closed four compartment was constructed with exponent functio

Key words: ⁹⁵Zr, Marine environment, Marine organism, Sediment

中图分类号:

王春琳, 史建君, 孙平跃, 李明云. 放射性锆在模拟海水、底质及海洋生物系统中的动态[J]. 应用生态学报, 2003, (6): 977-981.

WANG Chunlin, SHI Jianjun, SUN Pingyue, LI Mingyun. Dynamics of ⁹⁵Zr in simulated marine water-sediment-organisms system[J]. Chinese Journal of Applied Ecology, 2003, (6): 977-981.

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