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Occurrence of heavy metals and PAHs in soil and plants after application of sewage sludge to soil

机译:污泥施用到土壤后土壤和植物中重金属和多环芳烃的发生

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摘要

The results of investigations on heavy metals and polycyclic aromatic hydrocarbons (PAHs) content in mixed soil fertilized with sewage sludge are presented. The concentration of these micropollutants in various parts of a basket willow Salix viminalis grown on this substratum was also analyzed. Aerobically stabilized, dewatered, and hygienized sewage sludge (a dose of 90 tons of dry matter per hectare) was used to fertilize the soil. S. viminalis was planted on the soil amended with sewage sludge. The samples for analyses were taken after five vegetatives; they were both soil samples and parts of plants (roots, stems, and leaves). The concentration of heavy metals and PAHs was analyzed in the samples. The concentration of heavy metals in soil after five seasons of fertilizing with sewage sludge was at most cases higher than defined in soil at the beginning of the experiment. The concentration of Cr in soil after five years of S. viminalis cultivation was, however, lower than at the outset. The average concentration of Cr in biomass of a basket willow equaled to 9.3 mg/kg_(d.m.) and it was higher than the average content of this element in not fertilized soil samples (4.6 mg/kg_(d.m.)). The content of other heavy metals in willow biomass was lower than the soil concentration and was equal to 0.7, 7.9, 1.3, 13.2, and 47.0 mg/kg_(d.m.) for Cd, Cu, Ni, Pb, and Zn, respectively. The concentration of 15 PAHs total in soil did not exceed 700 μg/kg_(d.m.). The total concentration of 15 PAHs was also analyzed in particular parts of S. viminalis. The average total concentration of these micropollutants in roots was equal to 67 μg/kg_(d.m.). The total concentration of 15 PAHs in above ground parts of plants was equal to 115 and 55 μg/kg_(d.m.) for leaves and stems, respectively.
机译:给出了对污泥施肥的混合土壤中重金属和多环芳烃含量的调查结果。还分析了在该基质上生长的柳篮柳柳中各个部分中这些微量污染物的浓度。用空气稳定,脱水和卫生的污水污泥(每公顷90吨干物质的剂量)对土壤施肥。葡萄球菌被种植在用污水污泥改良的土壤上。用于分析的样品是从五种植物中提取的。它们既是土壤样品,又是植物的一部分(根,茎和叶)。分析样品中重金属和PAHs的浓度。污水污泥施肥五个季节后,土壤中的重金属浓度多数情况下高于实验开始时土壤中的含量。但是,在培养了五年的葡萄球菌之后,土壤中的铬含量低于开始时的水平。篮柳生物量中铬的平均浓度等于9.3 mg / kg_d.m。,高于未施肥土壤样品中该元素的平均含量(4.6 mg / kg_d.m。)。柳树生物量中其他重金属的含量低于土壤浓度,Cd,Cu,Ni,Pb和Zn分别等于0.7、7.9、1.3、13.2和47.0 mg / kg_d.m.。土壤中15种多环芳烃的总含量不超过700μg/ kg_d.m.。还在部分葡萄球菌中分析了15种PAH的总浓度。这些微量污染物在根中的平均总浓度等于67μg/ kg_(d.m。)。植物地上部分中15种PAHs的总浓度分别为叶和茎分别为115和55μg/ kg_d.m.。

著录项

  • 来源
    《Desalination and water treatment》 |2014年第21期|4014-4026|共13页
  • 作者单位

    Institute of Environmental Engineering, University of Zielona Gora, Prof. Szafrana Str, Zielona Gora 65-516, Poland;

    Institute of Environmental Engineering, University of Zielona Gora, Prof. Szafrana Str, Zielona Gora 65-516, Poland;

    Institute of Environmental Engineering, University of Zielona Gora, Prof. Szafrana Str, Zielona Gora 65-516, Poland;

    Department of Environmental Chemistry, Water and Wastewater Technology, Czestochowa University of Technology, 69 Dabrowskiego Str, Czestochowa 42-200, Poland;

    Department of Environmental Chemistry, Water and Wastewater Technology, Czestochowa University of Technology, 69 Dabrowskiego Str, Czestochowa 42-200, Poland;

    Department of Environmental Chemistry, Water and Wastewater Technology, Czestochowa University of Technology, 69 Dabrowskiego Str, Czestochowa 42-200, Poland;

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

    Soil; Sewage sludge; Salix viminalis; Heavy metals; PAHs; HPLC-DAD;

    机译:泥;污水污泥;柳柳;重金属;多环芳烃;高效液相色谱;

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