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首页> 外文期刊>Environmental toxicology and chemistry >UPTAKE OF CESIUM-134 BY THE EARTHWORM SPECIES EISENIA FOETIDA AND LUMBRICUS RUBELLUS
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UPTAKE OF CESIUM-134 BY THE EARTHWORM SPECIES EISENIA FOETIDA AND LUMBRICUS RUBELLUS

机译：地球昆虫埃森氏菌和鲁姆比克菌对铯134的吸收

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摘要

The uptake processes of ~(134)Cs in two earthworm species were investigated as well as the effect of temperature on these processes. The results show that equilibrium concentrations in the two species differ by 1.5- to fivefold. Equilibrium concentrations range from 367 to 963 Bq g~(-1) in Lumbricus rubellus and from 920 to 1,893 Bq g~(-1) in Eisenia foetida; biological half-lives range from 56 to 119 h and 52 to 64 h, respectively. Assimilation was two to four times higher in E. foetida and elimination rate one to two times higher in E. foetida than in L. rubellus. Further, the results show that temperature may affect the ~(134)Cs concentration in these earthworms by a factor of 1.4 to 2.1 between 10 and 20℃, depending on the species. The maximum difference found within one species was a factor of 2.6. Our results show no clear effect of temperature on the assimilation, but a small negative effect on elimination, resulting in an increasing biological half-life and concentration factor with higher temperatures.
机译：研究了两种earth中〜（134）Cs的吸收过程以及温度对这些过程的影响。结果表明，两种物种中的平衡浓度相差1.5-5倍。 Lu虫的平衡浓度范围为367至963 Bq g〜（-1），艾​​森尼亚（Eisenia foetida）的平衡浓度范围为920至1,893 Bq g〜（-1）。生物学半衰期分别为56至119小时和52至64小时。 fo。foetida的同化率比风疹L. rubellus高2-4倍，foetida的消除率高1-2倍。此外，结果表明，温度可能会影响这些and中〜（134）Cs的浓度，在10至20℃之间的影响范围为1.4到2.1，具体取决于物种。一个物种内发现的最大差异是2.6倍。我们的结果表明温度对同化作用没有明显的影响，但是对消除的影响却很小，随着温度的升高，导致生物半衰期和浓度因子的增加。

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