向日葵、芦苇和杨树对铯-137吸收的实验室分析。
Laboratory analyses of 137Cs uptake by sunflower, reed and poplar.
作者信息
Soudek Petr, Tykva Richard, Vanek Tomás
机构信息
Department of Plant Tissue Cultures, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Praha 6, Czech Republic.
出版信息
Chemosphere. 2004 May;55(7):1081-7. doi: 10.1016/j.chemosphere.2003.12.011.
The 137Cs uptake by three plant species (Phragmites australis L., Heliantus annus L., Populus simonii L.) was analyzed in a hydroponic medium (14 MBql(-1); 0.5 mM CsCl) during cultivation. The radioactivity disappearance from the medium was measured after 2, 4, 8, 16 and 32 days of cultivation. Radioactivity distribution within the plant was determined by autoradiography. We did not find differences between uptake of radioactive and stable caesium isotopes. Relations between the uptake of 137Cs and concentration of potassium and ammonium ions in medium were also tested. The highest uptake of radiocaesium by sunflower was obtained for medium with 1 mM K2SO4 (14.2%) and in case of ammonium ions for concentration ratio 6 mM NH4Cl : 3 mM NH4NO3 (13.2%). The obtained results make it possible to compare the capability and rate of 137Cs phytoremediation of different plant species.
在水培介质（14 MBq l⁻¹；0.5 mM CsCl）中培养三种植物（芦苇、向日葵、小叶杨）时，分析了它们对¹³⁷Cs的吸收情况。在培养2、4、8、16和32天后，测量了介质中放射性的消失情况。通过放射自显影确定了植物体内的放射性分布。我们没有发现放射性铯同位素和稳定铯同位素吸收之间的差异。还测试了¹³⁷Cs的吸收与介质中钾离子和铵离子浓度之间的关系。对于含有1 mM K₂SO₄的介质，向日葵对放射性铯的吸收最高（14.2%）；对于铵离子，当浓度比为6 mM NH₄Cl : 3 mM NH₄NO₃时，吸收最高（13.2%）。所得结果使得比较不同植物物种对¹³⁷Cs植物修复的能力和速率成为可能。
Zotero 插件