Phytoremediation of lead with green onions (Allium fistulosum) and uptake of arsenic compounds by moonlight ferns (Pteris cretica cv Mayii)

被引：16

作者：

Cho, Youngsoo ^{[1
]}

Bolick, James A. ^{[1
]}

Butcher, David J. ^{[1
]}

机构：

[1] Western Carolina Univ, Dept Chem & Phys, Cullowhee, NC 28723 USA

来源：

MICROCHEMICAL JOURNAL | 2009年 / 91卷 / 01期

基金：

美国国家科学基金会;

关键词：

Phytoremediation; Lead; Arsenic; ICP-OES; Allium fistulosum; Pteris cretica cv Mayii; MUSTARD BRASSICA-JUNCEA; HEALTH-RISK ASSESSMENT; INDIAN MUSTARD; CONTAMINATED SOIL; BARBER-ORCHARD; PB; NC;

D O I：

10.1016/j.microc.2008.05.008

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Phytoremediation has been investigated as an alternative to excavation to remediate contamination in soil. In this work, Allium fistulosum (green onions) and Pteris cretica cv Mayii (moonlight ferns) were investigated for phytoremediation. Green onions were planted in lead-spiked soil, and chelating agents were introduced to enhance the uptake of lead by the plants. Lead uptake was low in the absence of chelating reagents. Ethylenediaminetetraacetic acid (EDTA) significantly enhanced the concentration of lead in the stems of green onions, while propylenediaminetetraacetic acid (PDTA) did not induce lead absorption. Moonlight ferns (P. cretica cv Mayii) were planted in a hydroponic system to which arsenic (III), arsenic (V). and monomethylarsenate (MMA) were added with hydroponic solution. Ferns exposed to arsenic (III) showed the highest extraction of arsenic followed by ferns exposed to arsenic (V). The extraction of arsenic by the ferns was higher when arsenic (III) was mixed with arsenic (V) than the combination of arsenic (III) and MMA. These results suggest that inorganic arsenic is phytoextracted preferentially to MMA. (C) 2008 Elsevier B.V. All rights reserved

引用

页码：6 / 8

页数：3

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