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首页> 外文期刊>Journal of environmental science and health >Elevated concentrations of trace elements in soil do not necessarily reflect metals available to plants
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Elevated concentrations of trace elements in soil do not necessarily reflect metals available to plants

机译：土壤中痕量元素的浓度升高不一定反映出植物可利用的金属

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摘要

Bioaccumulation and entry of trace elements from soil into the food chain have made trace-elements major environmental pollutants. The main objective of this investigation was to study the impact of mixing native agricultural soil with municipal sewage sludge (SS) or SS mixed with yard waste (SS+YW) compost on total concentration of trace elements in soil, metals available to plants, and mobility of metals from soil into peppers and melon fruits. Regardless of soil treatment, the average concentrations of Ni, Cd, Pb, Cr, Cu, Zn, and Mo in melon fruits were 5.2, 0.7, 3.9, 0.9, 34.3, 96.1, and 3.5/μg g~(-1), respectively Overall concentrations of Ni, Cd, Pb, and Zn in melon fruits were significantly greater (P ＜ 0.05) than pepper fruits. No significant differences were found in Cr, Cu, and Mo concentrations between pepper and melon fruits at harvest time. Total metal concentrations and metal ions in soil available to melon and pepper plants were also determined. Total concentration of each metal in the soil was significantly greater than concentration of metal ions available to plants. Elevated Ni and Mo bioaccumulation factor (BAF ＞ 1) of melon fruits of plants grown in SS+YW mixed soil is a characteristic that would be less favorable when plants grown on sites having high concentrations of these metals.
机译：生物积累和微量元素从土壤进入食物链已使微量元素成为主要的环境污染物。这项研究的主要目的是研究将本地农业土壤与市政污水污泥（SS）或SS与庭院废物（SS + YW）混合肥料混合对土壤中微量元素，植物可利用的金属和金属从土壤到辣椒和甜瓜果实的迁移性。无论采用何种土壤处理，瓜果中镍，镉，铅，铅，铬，铜，锌和钼的平均浓度分别为5.2、0.7、3.9、0.9、34.3、96.1和3.5 /μgg〜（-1），甜瓜果实中的镍，镉，铅和锌的总浓度分别显着高于辣椒果实（P ＜0.05）。收获时辣椒和甜瓜果实之间的铬，铜和钼浓度没有显着差异。还确定了瓜类和辣椒植物可获得的土壤中的总金属浓度和金属离子。土壤中每种金属的总浓度明显大于植物可用的金属离子的浓度。在SS + YW混合土壤中生长的植物的瓜果的Ni和Mo生物富集因子（BAF＞ 1）升高的特征是，当植物生长在这些金属的浓度较高的地方时，不利于植物生长。

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  • 来源
    《Journal of environmental science and health》 |2013年第3期|219-225|共7页
  • 作者

    GEORGE F. ANTONIOUS; MAIFAN R. SILITONGA; TEFERI D. TSEGAYE; JASON M. UNRINE; TIMOTHY COOLONG; JOHN C. SNYDER;

  • 作者单位

    Division of Environmental Studies, College of Agriculture, Food Science, and Sustainable Systems, Kentucky State University, 110 At-wood Research Building, Frankfort, KY 40601-2355;

    Division of Environmental Studies, College of Agriculture, Food Science, and Sustainable Systems, Kentucky State University, Frankfort, Kentucky, USA;

    Division of Environmental Studies, College of Agriculture, Food Science, and Sustainable Systems, Kentucky State University, Frankfort, Kentucky, USA;

    Department of Plant and Soil Sciences, Agricultural Science Center North, University of Kentucky, Lexington, Kentucky, USA;

    Department of Horticulture, Agricultural Science Center North, University of Kentucky, Lexington, Kentucky, USA;

    Department of Horticulture, Agricultural Science Center North, University of Kentucky, Lexington, Kentucky, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Municipal sewage sludge; yard waste compost; pepper; melon; bioaccumulation factor;

    机译：城市污水污泥;院子里的垃圾堆肥;胡椒;瓜;生物蓄积因子;

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