Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 16521 Prague 6, Czech Republic.
Bull Environ Contam Toxicol. 2011 May;86(5):525-30. doi: 10.1007/s00128-011-0255-6. Epub 2011 Mar 27.
This study evaluates the long-term behavior of metals in soils treated with ethylenediaminedisuccinate for remediation purposes. The addition of the chelant led to a significant increase of water-extractable copper, iron, aluminum contents and their uptake by poplar. Increased concentrations of the metals were present in the soil solution even after the 2 years of the experiment (up to a 30-, 170- and 270-fold increase for copper, iron and aluminum, respectively). Therefore, soils treated with chelants must be monitored not only for the targeted metal concentrations but also for major soil cations originating from chelant-induced dissolution of soil oxides.
本研究评估了乙二胺二琥珀酸处理土壤后的金属在土壤中的长期行为，以达到修复的目的。螯合剂的添加导致可提取的铜、铁、铝含量显著增加，并且杨树对其的吸收也增加了。即使在实验进行了 2 年后，土壤溶液中仍存在较高浓度的金属（铜、铁和铝的浓度分别增加了 30 倍、170 倍和 270 倍）。因此，用螯合剂处理过的土壤不仅要监测目标金属浓度，还要监测主要土壤阳离子，因为这些阳离子来自于螯合剂诱导的土壤氧化物溶解。
