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Cd-Cu-Pb复合污染对芥菜吸收Cd、Cu和Pb及矿质元素的影响

谢素 寇士伟 吴鹏辉 骆昌朗 黄成彬 李哲 亦如瀚

谢素, 寇士伟, 吴鹏辉, 骆昌朗, 黄成彬, 李哲, 亦如瀚. Cd-Cu-Pb复合污染对芥菜吸收Cd、Cu和Pb及矿质元素的影响[J]. 环境科学研究, 2012, 25(4): 453-459.
引用本文: 谢素, 寇士伟, 吴鹏辉, 骆昌朗, 黄成彬, 李哲, 亦如瀚. Cd-Cu-Pb复合污染对芥菜吸收Cd、Cu和Pb及矿质元素的影响[J]. 环境科学研究, 2012, 25(4): 453-459.
XIE Su, KOU Shi-wei, WU Peng-hui, LUO Chang-lang, HUANG Cheng-bin, LI Zhe, YI Ru-han. Effects of Cd-Cu-Pb Compound Contamination on Absorption of Cd, Cu, Pb and Mineral Elements in Mustard[J]. Research of Environmental Sciences, 2012, 25(4): 453-459.
Citation: XIE Su, KOU Shi-wei, WU Peng-hui, LUO Chang-lang, HUANG Cheng-bin, LI Zhe, YI Ru-han. Effects of Cd-Cu-Pb Compound Contamination on Absorption of Cd, Cu, Pb and Mineral Elements in Mustard[J]. Research of Environmental Sciences, 2012, 25(4): 453-459.

Cd-Cu-Pb复合污染对芥菜吸收Cd、Cu和Pb及矿质元素的影响

基金项目: 国家自然科学基金委员会-广东省人民政序自然科学联合基金项目(U0933002)

Effects of Cd-Cu-Pb Compound Contamination on Absorption of Cd, Cu, Pb and Mineral Elements in Mustard

  • 摘要: 以十字花科的芥菜为材料,通过室内盆栽均匀设计试验,研究了Cd-Cu-Pb复合污染下芥菜对重金属的吸收转运特点以及对矿质元素吸收的影响. 结果表明:3种重金属在芥菜体内积累能力为Cd>Cu>Pb;芥菜对Pb、Cd有较强耐性,对高浓度Cu耐性不强. 土壤中重金属的含量是影响芥菜各部分重金属含量的主要因素之一;Cd可抑制芥菜对Pb的吸收和转移,促进Cu向芥菜地上部转移;Cd-Pb复合效应促进了Cd在芥菜体内累积;Cu抑制芥菜吸收Pb;Cu-Pb可促进Cd抑制Cu在芥菜各部的积累. 与对照相比,复合污染显著降低了芥菜对矿质元素的吸收累积,各处理芥菜对Mg、Fe和K的吸收转移特点显示出相似的规律,即地上部w(Mg)远大于地下部而w(Fe)和w(K)为地下部占优. Cd可极大促进芥菜对K的吸收而抑制对Fe的吸收,Cu则阻碍地下部对K的吸收;Cu与Cd-Pb复合效应可抑制K向地上部转移.

     

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