Shaheen Sabry M, Rinklebe Jörg
Department of Soil and Water Sciences, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh, 33 516, Egypt.
Department D, Soil- and Groundwater-Management, University of Wuppertal, Pauluskirchstraße 7, 42285, Wuppertal, Germany.
Environ Geochem Health. 2015 Dec;37(6):953-67. doi: 10.1007/s10653-015-9718-8. Epub 2015 Jun 4.
The objective of this study was to quantify the phytoextraction of the potentially toxic elements Al, As, Cd, Co, Cr, Cu, Mo, Ni, Pb, Se, V, and Zn by Indian mustard, rapeseed, and sunflower from a contaminated riparian soil. To achieve this goal, a greenhouse pot experiment was established using a highly contaminated grassland soil collected at the Wupper River (Germany). The impact of ethylene-diamine-tetra-acetic acid (EDTA), humate (HK), and phosphate potassium (PK) on the mobility and uptake of the elements by rapeseed also was investigated. Indian mustard showed the highest efficiency for phytoextraction of Al, Cr, Mo, Se, and V; sunflower for Cd, Ni, Pb, and Zn, and rapeseed for Cu. The bioconcentration ratios were higher than 1 for the elements (except As and Cu), indicating the suitability of the studied plants for phytoextraction. Application of EDTA to the soil increased significantly the solubility of Cd, Co, Cr, Ni, and Pb and decreased the solubility of Al, As, Se, V, and Mo. Humate potassium decreased significantly the concentrations of Al and As in rapeseed but increased the concentrations of Cu, Se, and Zn. We may conclude that HK can be used for immobilization of Al and As, while it can be used for enhancing the phytoextraction of Cu, Se, and Zn by rapeseed. Phosphate potassium immobilized Al, Cd, Pb, and Zn, but enhanced phytoextraction of As, Cr, Mo, and Se by rapeseed.
本研究的目的是量化印度芥菜、油菜籽和向日葵从受污染的河岸土壤中对潜在有毒元素铝、砷、镉、钴、铬、铜、钼、镍、铅、硒、钒和锌的植物提取量。为实现这一目标,利用在德国伍珀河采集的高度污染草地土壤进行了温室盆栽试验。还研究了乙二胺四乙酸(EDTA)、腐殖酸盐(HK)和磷酸钾(PK)对油菜籽中元素迁移率和吸收量的影响。印度芥菜对铝、铬、钼、硒和钒的植物提取效率最高;向日葵对镉、镍、铅和锌的提取效率最高,油菜籽对铜的提取效率最高。除砷和铜外,其他元素的生物富集系数均高于1,表明所研究的植物适合进行植物提取。向土壤中施加EDTA显著提高了镉、钴、铬、镍和铅的溶解度,降低了铝、砷、硒、钒和钼的溶解度。腐殖酸钾显著降低了油菜籽中铝和砷的浓度,但提高了铜、硒和锌的浓度。我们可以得出结论,HK可用于固定铝和砷,同时可用于提高油菜籽对铜、硒和锌的植物提取量。磷酸钾固定了铝、镉、铅和锌,但提高了油菜籽对砷、铬、钼和硒的植物提取量。