Cuske Mateusz, Karczewska Anna, Gałka Bernard, Dradrach Agnieszka
a Institute of Soil Science and Environmental Protection, Wroclaw University of Environmental and Life Sciences , Wroclaw , Poland.
b Department of Agroecosystems and Green Areas Management , Wroclaw University of Environmental and Life Sciences , Wroclaw , Poland.
Int J Phytoremediation. 2016 Aug 2;18(8):839-46. doi: 10.1080/15226514.2016.1146227.
The study was aimed to examine the effects of soil amendment with organic waste materials on the growth of red fescue and the uptake of Cu and Zn by this grass, in view of its potential usage for phytostabilization of Cu-polluted soils. Five soils, containing 301-5180 mg/kg Cu, were collected from the surroundings of copper smelter Legnica, and amended with lignite (LG) and limed sewage sludge (SS). Plant growth and the concentrations of Cu and Zn in the shoots and roots of grass were measured in a pot experiment and related to the results of Pytotoxkit and Microtox® tests performed on soil solution. The effects of soil amendment with LG and SS differed greatly, and depended on soil properties. In some cases, the application of alkaline SS resulted in dramatic increase of Cu phytotoxicity and its enhanced uptake by plants, while application of LG to slightly acidic soil caused increased accumulation of Zn in plants, particularly in their roots. The study confirmed good suitability of red fescue for phytostabilization of Cu-contaminated soils except for those extremely polluted. Organic amendments to be used for metal immobilization should be thoroughly examined prior to application.
鉴于红羊茅在铜污染土壤植物稳定修复方面的潜在用途，本研究旨在考察添加有机废料改良土壤对红羊茅生长以及该草对铜和锌吸收的影响。从莱格尼察铜冶炼厂周边采集了五种含铜量为301 - 5180毫克/千克的土壤，并用褐煤（LG）和石灰处理过的污水污泥（SS）进行改良。通过盆栽试验测定了草的地上部和根部的生长情况以及铜和锌的浓度，并与对土壤溶液进行的植物毒性试剂盒（Pytotoxkit）和Microtox®测试结果相关联。用LG和SS改良土壤的效果差异很大，且取决于土壤性质。在某些情况下，施用碱性SS会导致铜的植物毒性显著增加以及植物对铜的吸收增强，而将LG施用于微酸性土壤会使植物中锌的积累增加，尤其是在根部。该研究证实，除了那些污染极其严重的土壤外，红羊茅非常适合用于铜污染土壤的植物稳定修复。用于固定金属的有机改良剂在施用前应进行全面检测。
