Institut für Radioökologie und Strahlenschutz (IRS), Leibniz Universität Hannover, Herrenhäuser Straße 2, 30419, Hannover, Germany.
Environ Sci Pollut Res Int. 2017 Oct;24(28):22741-22751. doi: 10.1007/s11356-017-0056-5. Epub 2017 Sep 6.
Due to excessive mining and use of radionuclide especially uranium (U) and its fission products, numerous health hazards as well as environmental contamination worldwide have been created. The present study focused on demonstrating whether low concentration of U treatment in liquid nutient medium may translocate traces of U in plants and in fruits of Pisum sativum after 30 and 60 days of exposure for the safe use as a food supplement for human/animals. Hydroponically grown plants (in amended Hoagland medium) were treated with two different concentrations of uranium ([U] = 100 and 500 nM, respectively). Plants showed a decrease in total chlorophyll after 60 days of treatment. On the other hand, Eh of the nutrient medium was not affected from the initial days till 60 days of treatment, but pH of nutrient medium was increased upon durations, highest at 60 days of treatment. In seeds, micro/macro elements were under limit as well as U concentration was also under detection limit. We did not observe any U in the above ground parts (shoots/seeds) of the plant, i.e., under detection limit. Our observation suggests that P. sativum plants may be useful to grow at low radionuclide [U]-contaminated areas for safe human/animal use, but for other fission products, we have to investigate further for the safe human/animal use.
由于放射性核素（尤其是铀 (U) 及其裂变产物）的过度开采和使用，全球范围内已经产生了许多健康危害和环境污染。本研究旨在证明在液体营养介质中低浓度的 U 处理是否会在豌豆 (Pisum sativum) 暴露 30 和 60 天后的植物和果实中迁移 U 的痕迹，以作为人类/动物的安全食品补充剂。水培植物（在改良的 Hoagland 培养基中）用两种不同浓度的铀 ([U] = 100 和 500 nM，分别）进行处理。经过 60 天的处理后，植物的总叶绿素含量下降。另一方面，营养介质的 Eh 从最初几天到 60 天的处理都没有受到影响，但营养介质的 pH 值随着时间的推移而增加，在 60 天的处理时达到最高。在种子中，微量元素/常量元素的含量都低于限制值，而 U 浓度也低于检测限。我们没有在植物的地上部分（茎/种子）中观察到任何 U，即低于检测限。我们的观察表明，豌豆植物可能适合在低放射性核素 [U] 污染地区生长，以供人类/动物安全使用，但对于其他裂变产物，我们还需要进一步研究以确保人类/动物的安全使用。
