The effect of EDDS addition on the phytoextraction efficiency from Pb contaminated soil by Sedum alfredii Hance

被引：53

作者：

Wang, Xin ^{[5
]}

Wang, Ying ^{[5
]}

Mahmood, Qaisar ^{[4
]}

Islam, Ejazul ^{[3
]}

Jin, Xiaofen ^{[2
]}

Li, Tingqiang ^{[2
]}

Yang, Xiaoe ^{[2
]}

Liu, Dan ^{[1
]}

机构：

[1] Zhejiang Forestry Univ, Coll Tourism & Hlth, Linan 311300, Peoples R China

[2] Zhejiang Univ, Coll Environm & Resource, Hangzhou 310029, Zhejiang, Peoples R China

[3] Nucl Inst Agr, Tandojam, Hyderabad, Pakistan

[4] COMSATS Inst Informat Technol, Dept Environm Sci, Abbottabad 22060, Pakistan

[5] Zhejiang Forestry Univ, Coll Landscape Architecture, Linan 311300, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 168卷 / 01期

基金：

中国国家自然科学基金;

关键词：

EDDS; Environmental pollution; Pb; Phytoextraction; Sedum alfredii Hance; CHELATE-ASSISTED PHYTOEXTRACTION; ENHANCED PHYTOEXTRACTION; INDIAN MUSTARD; ORGANIC-ACIDS; HEAVY-METALS; TRACE-METALS; CITRIC-ACID; EDTA; ACCUMULATION; CU;

D O I：

10.1016/j.jhazmat.2009.02.074

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Present study reports the results of three pot experiments, conducted to investigate the chelate-assisted phytoextraction of Pb contaminated soils. The optimum phytoextraction was observed when 2.5 mM ethylene diamine disuccinic acid (EDDS) was added in single dosage for 14 days to low Pb soil (treated with 400 mg kg(-1) soil). On the contrary, for high Pb soil (treated with 1200 mg kg(-1) soil), 5 mM EDDS concentration in single dosage for 10 days produced better results. Post-harvest effects of EDDS on the concentrations of available Pb and dissolved organic carbon (DOC) were significantly higher as compared with check (CK i.e. without EDDS addition), and consequently decreased with the passage of time. Our results suggested that chelate-assisted phytoextraction was more suitable for slightly contaminated soils. (C) 2009 Elsevier BY. All rights reserved.

引用

页码：530 / 535

页数：6

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