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首页> 外文期刊>Water, air and soil pollution >Chemical Changes and Heavy Metal Partitioning in an Oxisol Cultivated with Maize (Zea mays, L.) after 5 Years Disposal of a Domestic and an Industrial Sewage Sludge
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Chemical Changes and Heavy Metal Partitioning in an Oxisol Cultivated with Maize (Zea mays, L.) after 5 Years Disposal of a Domestic and an Industrial Sewage Sludge

机译：在处理了五年的生活污水和工业污水污泥后，玉米（Zea mays，L.）种植的汽油中的化学变化和重金属分配

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摘要

The need for solutions to minimize the negative environmental impacts of anthropogenic activities Fhas increased. Sewage sludge is composed of predominantly organic matter and can be used to improve soil characteristics, such as fertility. Therefore, its application in agriculture is an adequate alternative for its final disposal. However, there is a lack of information on its long-term effects on soil changes in tropical areas. Thus, the objectives of this study were to determine (i) the effect of sewage sludge application on heavy metal build-up in soil and maize grains and leaves, and (ii) the effects of soil amendment with sewage sludge on the chemical properties of a Brazilian oxisol. Besides the increasing levels of Zn, Cu, Ni, and Cr, amending soil with sewage sludge also alters the distribution of these metals by increasing the mobile Phases, which correlated significantly with the increase in metal extraction with two single extrac-tants, Mehlich 1 and DTPA (Diethylene triamine pentaacetic acid). The levels of Fe, Mn, Zn, and Cu in maize grains and leaves increased with the type and rate of sewage sludge application. Nevertheless, metal build-up in soil and plants was within the allowed limits. Significant differences were also found in soil characteristics like humic fractionation with the applied sewage doses. The data obtained does not indicate any expressive drawbacks in the use of sewage sludge as a soil amendment, as the heavy metal concentrations observed are unlikely to cause any environmental or health problems, even overestimated loadings, and are in accordance with the Brazilian regulations on farming land biosolid disposal.
机译：增加了对解决方案的需求，以最大程度减少人为活动对环境的负面影响。污水污泥主要由有机物组成，可用于改善土壤特性，例如肥力。因此，将其用于农业是其最终处置的适当替代方案。但是，缺乏有关其对热带地区土壤变化的长期影响的信息。因此，本研究的目的是确定（i）污泥施用对土壤和玉米谷粒和叶片中重金属积累的影响，以及（ii）污泥对土壤化学特性的影响。巴西的oxisol。除了增加锌，铜，镍和铬的含量外，用污泥改良土壤还可以通过增加流动相来改变这些金属的分布，这与使用两种单一萃取剂Mehlich 1提取金属的增加显着相关。和DTPA（二亚乙基三胺五乙酸）。玉米籽粒和叶片中铁，锰，锌和铜的含量随污水污泥施用类型和速率的增加而增加。尽管如此，土壤和植物中的金属积累仍在允许的范围内。在土壤特性（如腐殖质分馏与施用的污水剂量）之间也发现了显着差异。所获得的数据并未表明在使用污水污泥作为土壤改良剂时存在任何明显的缺点，因为观察到的重金属浓度不太可能引起任何环境或健康问题，甚至是高估的负荷，并且符合巴西的农业法规。土地生物固体处置。

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  • 来源
    《Water, air and soil pollution》 |2009年第4期|3-16|共14页
  • 作者

    S. Alcantara; D.V. Perez; M. R. A. Almeida; G.M. Silva; J.C. Polidoro; W. Bettiol;

  • 作者单位

    Institute de Quimica, UFRJ, Av. Brigadeiro Trompovisky, s, Cidade Universitaria, CEP 21949-900 Rio de Janeiro (RJ), Brazil;

    Embrapa Solos, R. Jardim Botanico, 1024, CEP 22460-000 Rio de Janeiro(RJ), Brazil;

    Institute de Quimica, UFRJ, Av. Brigadeiro Trompovisky, s, Cidade Universitaria, CEP 21949-900 Rio de Janeiro (RJ), Brazil;

    Institute de Quimica, UFRJ, Av. Brigadeiro Trompovisky, s, Cidade Universitaria, CEP 21949-900 Rio de Janeiro (RJ), Brazil;

    Embrapa Solos, R. Jardim Botanico, 1024, CEP 22460-000 Rio de Janeiro(RJ), Brazil;

    Embrapa Meio Ambiente, Caixa Postal 69, CEP 13820-000 Jaguariuna (SP), Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    humic substances; sequential extraction; metal accumulation;

    机译：腐殖质;顺序提取;金属积累;

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