The use of poplar during a two-year induced phytoextraction of metals from contaminated agricultural soils

被引：65

作者：

Komarek, Michael ^{[1
]}

Tlustos, Pavel ^{[1
]}

Szakova, Jirina ^{[1
]}

Chrastny, Vladislav ^{[2
]}

机构：

[1] Czech Univ Agr Prague, Dept Agrochem & Plant Nutr, Prague 16521 6, Czech Republic

[2] Univ S Bohemia, Dept Appl Chem & Chem Teaching, Ceske Budejovice 37005, Czech Republic

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 151卷 / 01期

关键词：

Populus spp; EDTA; chlorides; phytoextraction; metals; soils;

D O I：

10.1016/j.envpol.2007.03.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The efficiency of poplar (Populus nigra L. x Populus maximowiczii Henry.) was assessed during a two-year chemically enhanced phytoextraction of metals from contaminated soils. The tested metal mobilizing agents were EDTA (ethylenediaminetetraacetic acid) and NH4Cl. EDTA was more efficient than chlorides in solubilizing metals (especially Pb) front the soil matrix. The application of chlorides only increased the solubility of Cd and Zn. However, the increased uptake of metals after the application of higher concentrations of mobilizing agents was associated with low biomass yields of the poplar plants and the extraction efficiencies after the two vegetation periods were thus comparable to the untreated plants. Additionally, the application of mobilizing agents led to phytotoxicity effects and increased mobility of metals. Higher phytoextraction efficiencies were observed for Cd and Zn compared to Pb and Cu. Poplars are therefore not suitable for chemically enhanced phytoextraction of metals from severely contaminated agricultural soils. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：27 / 38

页数：12

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