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The uptake of ~(137)Cs and ~(90)Sr by plants from different soil components

机译:植物从不同土壤成分中吸收〜(137)Cs和〜(90)Sr

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The accumulation of ~(137)Cs and ~(90)Sr in wild herbaceous plants was shown to depend on the radionuclide content in the labile fraction of soil humus. Biological availability of radionuclides from different humus fractions was estimated in pot experiments. It was shown that water-soluble inorganic forms of ~(137)Cs and its soluble cesium-fulvic associations are the fractions most available for the root uptake. ~(90)Sr is more available from the clay-humus compounds. Peculiarities of the biologicalavailability of cationic (exchangeable) radionuclides and soluble radionuclide-organic compounds suggest that the exchangeable forms play the dominant role in the uptake of radionuclides by roots.
机译:研究表明,野生草本植物中〜(137)Cs和〜(90)Sr的积累取决于土壤腐殖质不稳定部分中放射性核素的含量。在盆栽实验中估计了来自不同腐殖质部分的放射性核素的生物利用度。结果表明,〜(137)Cs的水溶性无机形式及其可溶的铯-富维酸缔合是最容易吸收根的部分。 〜(90)Sr可从粘土-腐殖质化合物中获得。阳离子(可交换)放射性核素和可溶性放射性核素有机化合物的生物利用度的特殊性表明,可交换形式在根吸收放射性核素中起主要作用。

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