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Transference kinetics of ^(60)Co in an aquatic-terrestrial ecosystem 被引量：3

Transference kinetics of ^(60)Co in an aquatic-terrestrial ecosystem
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摘要 The dynamics of transportation,accumulation,disappearance and distribution of 60Co in a simulated aquatic-terrestrial ecosystem was studied by isotope-tracer technique. In the aquatic system,60Co was transported and transformed via depositing,coupling with ions and adsorption. The absorption resulted in the redistribution and accumulation of 60Co in each compartment of the system. Specific activities of 60Co in water started sharply and gently decreased. The sediment accumulated a large amount of 60Co by adsorption and ion exchange. The hornwort (Ceralophyllum demersum) could also adsorb a large amount of 60Co in a short time,because of its large specific surface area. Fish (Carassius auratus) and snail (Bellamya purificata) had a poor capacity of adsorbing 60Co. The distribution of 60Co in the fish was mainly in the viscera,and the amount of 60Co in the snail flesh was greater than that in the shell. The amount of 60Co in individual compartment in the system was changed with time. The highest specific activity of 60Co in the bean of the terrestrial system remained in the root nodule. The dynamics of transportation, accumulation, disappearance and distribution of 60Co in a simulated aquatic-terrestrial ecosystem was studied by isotope-tracer technique. In the aquatic system, 60Co was transported and transformed via depositing, coupling with ions and adsorption. The absorption resulted in the redistribution and accumulation of 60Co in each compartment of the system. Specific activities of 60Co in water started sharply and gently decreased. The sediment accumulated a large amount of 60Co by adsorption and ion exchange. The hornwort （Ceralophyllurn demersurn） could also adsorb a large amount of 60Co in a short time, because of its large specific surface area. Fish （Carassius auratus） and snail （Bellarnya purificata） had a poor capacity of adsorbing 60Co. The distribution of 60Co in the fish was mainly in the viscera, and the amount of 60Co in the snail flesh was greater than that in the shell. The amount of 60Co in individual compartment in the system was changed with time. The highest specific activity of 60Co in the bean of the terrestrial system remained in the root nodule.
作者 ZHAO Xiyue CAI Zhiqing GONG Fanghong SHI Jianjun WANG Shouxiang
机构地区 School of Chemistry and Chemical Engineering Institute of Nuclear Agricultural Sciences
出处 《Nuclear Science and Techniques》 SCIE CAS CSCD 2008年第4期213-217,共5页 核技术（英文）
基金 National Natural Science Foundation of China (39570149)
关键词 土壤污染 化学技术 生态系统 动力学 60Co, Aquatic-terrestrial ecosystem, Compartment model, Transference kinetics
分类号 X131.3 [环境科学与工程—环境科学] X591 [环境科学与工程—环境工程]
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参考文献15

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同被引文献44

  • 1孙桂莲,史建君.^(14)C在水-金鱼藻系统中的消长动态[J].中国环境科学,2006,26(2):219-223. 被引量：3
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二级引证文献9

Nuclear Science and Techniques
2008年 第4期

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