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首页> 外文期刊>Geochemistry: Exploration, Environment, Analysis >Background and baseline concentration values of elements harmful to human health in the volcanic soils of the metropolitan and provincial areas of Napoli (Italy)
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Background and baseline concentration values of elements harmful to human health in the volcanic soils of the metropolitan and provincial areas of Napoli (Italy)

机译：那不勒斯（意大利）的大都市和省区的火山土壤中对人体健康有害的元素的背景和基线浓度值

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摘要

In this paper, we discuss baseline geochemical maps of elements harmful to human health compiled using concentration data of 982 volcanic soil samples from the metropolitan and provincial areas of Napoli (1171 km2). Each sample was digested in aqua regia and analysed by ICP-MS and ICP-ES. For the compilation of baseline geochemical maps, we apply a recently developed multifractal IDW interpolation method and spectral analysis (S-A) using a new geochemistry-dedicated GIS (GeoDAS). The geochemical baseline in an area of heavy anthropogenic impact, such as the Neapolitan territory, includes the geogenic natural content (background) and the anthropogenic contribution in the soils. The definition and distinction of background (geogenic) values, as opposed to baseline values, are very important in environmental studies because legislation typically fixes the intervention limits for both organic and inorganic substances in soils as a function of local background values. Maps obtained by the S-A method show high baseline values for some metallic elements (Pb, Zn, Sb, Hg, Cd, Cr, Cu) which denote a clear anthropogenic contribution, due to the long period of constant human activities in the study area. These maps also show a high geogenic contribution most probably derived from hydrothermal fluids because the study area is located between two active volcanic fields (Mt. Somma–Vesuvius and Campi Flegrei), where geothermal fluids have been used for spas since Roman times. The maps obtained using the S-A method, implemented in GeoDAS, reflect both the geogenic and anthropogenic contribution, so they must be considered as baseline maps. In order to obtain background values, to be used as reference values for the environmental Italian Law 471/1999, we have applied the concentration–area fractal method (C-A) to classify the pixel values of baseline maps. R-mode factor analysis helped in interpreting data controlled by anthropogenic sources as opposed to those controlled by geogenic sources.
机译：在本文中，我们讨论了使用来自大城市和省级 的982火山土壤样品的浓度数据编制的对人类健康有害的元素 的基线地球化学图。那不勒斯（1171 km 2 ）。每个样品均在Aqua区域中进行消化，并通过ICP-MS和ICP-ES进行分析。对于基线地球化学图的编译 ，我们应用了新开发的 分形IDW插值方法，并使用了新的地球化学专用光谱分析 （SA） GIS（GeoDAS）。人为影响较大的区域中的地球化学 基线，例如 那不勒斯地区，包括地球自然含量 （背景）和人为贡献 与基线值相比，背景（基因）值（ ）的定义和区别在环境研究中非常重要，因为立法通常根据当地背景值确定 对土壤中有机和无机物质的干预 限值。通过 SA方法获得的图谱显示某些金属元素（sb> （Pb，Zn，Sb，Hg，Cd，Cr，Cu）的基线值较高，表示明显的人为因素> 贡献，这是由于研究区域中人类长期持续不断的活动 。这些地图还显示出很高的地质成因 ，很可能来自热液，因为研究 区域位于两个活跃的火山场之间（索玛山–维苏威火山 和Campi Flegrei），自罗马时代以来，地热流体就一直用于 spa。使用在GeoDAS中实施的S-A方法获得的地图 反映了地质和人为因素 的贡献，因此必须将其视为基线地图。按照 的顺序获得背景值，以用作意大利环境法471/1999的参考值 ，我们应用了 浓度区域分形方法（CA）对基线图的像素值进行 分类。 R模式因子分析有助于 将人为源控制的数据解释为 与受地源控制的数据相反。

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  • 来源
    《Geochemistry: Exploration, Environment, Analysis》 |2005年第1期|00000029-00000040|共12页
  • 作者

    Domenico Cicchella; Benedetto De Vivo; Annamaria Lima;

  • 作者单位

    Dipartimento di Studi Geologici ed Ambientali, Università degli Studi del Sannio, Via Port'Arsa 11,82100 Benevento, Italy|Dipartimento di Geofisica e Vulcanologia, Universita di Napoli ‘Federico II’, Via Mezzocannone 8, 80134 Napoli, Italy (e-mail: bdevivo@unina.it);

    Dipartimento di Geofisica e Vulcanologia, Universita di Napoli ‘Federico II’, Via Mezzocannone 8, 80134 Napoli, Italy (e-mail: bdevivo@unina.it);

    Dipartimento di Geofisica e Vulcanologia, Universita di Napoli ‘Federico II’, Via Mezzocannone 8, 80134 Napoli, Italy (e-mail: bdevivo@unina.it);

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  • 正文语种 eng
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  • 关键词

    background; baseline; harmful elements; volcanic soils; geochemical maps;

    机译：背景;基线有害元素火山土壤地球化学图;

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