生态与农村环境学报 ›› 2013, Vol. 29 ›› Issue (2): 225-229.doi:

• 污染控制与修复 • 上一篇    下一篇

空心菜对重金属吸收累积特征及其与营养元素的关系

张露尹,李取生,李慧,陈艳   

  1.  暨南大学环境工程系
  • 收稿日期:2012-10-22 修回日期:2013-02-27 出版日期:2013-03-25 发布日期:2013-04-11
  • 通讯作者: 李取生 暨南大学环境工程系 E-mail:liqusheng@21cn.com
  • 作者简介:张露尹(1987-),女,广东梅州人,硕士生,主要研究方向为环境生态与土壤环境。E-mail:poyoro@yahoo.cn
  • 基金资助:

    国家自然科学基金(40871154,U0833002);中央高校基本科研基金(21612103)

Absorption and Accumulation of Heavy Metals in Water Spinach, and Their Relationships with Nutrient Elements

ZHANG  Lu-Yin, LI  Qu-Sheng, LI  Hui, CHEN  Yan   

  1. Department of Environmental Engineering,Jinan University
  • Received:2012-10-22 Revised:2013-02-27 Online:2013-03-25 Published:2013-04-11
  • Contact: LI Qu-Sheng Department of Environmental Engineering,Jinan University E-mail:liqusheng@21cn.com

摘要: 采用盆栽试验方法研究15个空心菜品种可食用部位对重金属Cd、Cu、Pb和Zn的吸收累积特性,结果表明,空心菜对重金属的平均富集系数由高到低依次为Zn(0.0946)、Cd(0.074 0)、Cu(0.050 0)和Pb(0.001 2)。各空心菜品种可食用部位Cd、Cu、Pb和Zn含量范围分别为0.107~0.175、1.35~3.27、0.091~0.162和23.4~38.9 mg•kg-1。通过聚类分析可将15种空心菜分成3类,其中进口泰国空心菜、四海农王柳叶空心菜和四海农王大白梗通菜对重金属累积性较低。对空心菜可食用部位重金属和营养元素含量进行相关性分析,结果显示Cd、Cu含量分别与K、Ca含量呈显著正相关,Zn含量与K、Ca、Na、Mg含量呈显著正相关,Pb与营养元素含量没有显著相关性。

关键词: 空心菜, 重金属, 营养元素, 相关性

Abstract: A pot experiment was carried out to study bioaccumulation of Cd, Cu,Pb and Zn in edible parts of 15 cultivars of water spinaches. Results show that concentrations of heavy metals differed sharply from cultivar to cultivar (P<0.05). By mean enrichment coefficient, the heavy metals followed the discending order of Zn(0.0946), Cd(0.0740),Cu(0.0500),and Pb(0.0012); the concentration of Cd, Cu, Pb and Zn in the edible parts of the plants varied in the range of 0.107 - 0.175; 1.35 - 3.27; 0.091 -0.162,and 23.4 - 38.9 mg•kg-1, respectively. Cluster analysis of the concentrations of heavy metals shows that the 15 cultivars could be sorted into three groups. Among them Thai cultivar, Sihainongwang willow-leaf cultivar and Sihainongwang Dabaigeng cultivar were low in heavy metal accumulation. Correlation analysis shows that Cd and Cu were significantly  related to K and Ca,and Zn was to K, Ca, Na and Mg, while Pb did not show any significant relationship with any nutrient elements.

Key words: water spinach, heavy metals, nutrient elements, correlation

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