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MERCURY CONTENT OF ILLINOIS SOILS

机译:伊利诺伊州土壤的含汞量

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For a survey of Illinois soils, 101 cores had been collected and analyzed to determine the current and background elemental compositions of Illinois soils. Mercury and other elements were determined in six samples per core, including a surface sample from each core. The mean mercury content in the surface samples was 33 ± 20 μg/kg soil, and the background content was 20 ± 9 μg /kg. The most probable sources of mercury in these soils were the parent material, and wet and dry deposition of Hg~0 and Hg~(2+) derived from coal-burning power plants, other industrial plants, and medical and municipal waste incinerators. Mercury-bearing sewage sludge or other fertilizers applied to agricultural fields could have been the local sources of mercury. Although the mercury content correlated with organic carbon content or clay content in individual cores, when all the data were considered, there was no strong correlation between mercury and either the organic carbon or the clay-size content.
机译:为了调查伊利诺伊州的土壤,已收集并分析了101个岩心,以确定伊利诺伊州土壤的当前和背景元素组成。在每个核心的六个样本中确定了汞和其他元素,包括每个核心的表面样本。表面样品中的平均汞含量为33±20μg/ kg土壤,背景含量为20±9μg/ kg土壤。这些土壤中最可能的汞来源是母体材料,以及来自燃煤发电厂,其他工业工厂以及医疗和城市垃圾焚烧炉的Hg〜0和Hg〜(2+)的干湿沉积。用于农业领域的含汞污水污泥或其他肥料可能是当地的汞来源。尽管汞含量与各个岩心中的有机碳含量或粘土含量相关,但考虑所有数据后,汞与有机碳或粘土含量之间并没有很强的相关性。

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