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Absorption and Accumulation of Heavy Metals in Water Spinach,and Their Relationships With Nutrient Elements
Author(s): 
Pages: 225-229
Year: Issue:  2
Journal: Journal of Ecology and Rural Environment

Keyword:  空心菜 重金属 营养元素 相关性;
Abstract: 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(0.094 6)、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的累积性较低。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含量与营养元素含量没有显著相关性。
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