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首页> 外文期刊>Moscow University Soil Science Bulletin >Magnetic Susceptibility As an Indicator of Heavy Metal Contamination of Urban Soils (Review)
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Magnetic Susceptibility As an Indicator of Heavy Metal Contamination of Urban Soils (Review)

机译：磁化率作为城市土壤重金属污染的指标（综述）

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摘要

Researchers have a particular interest in the assessment of magnetic susceptibility due to aerial contamination of soils by magnetite and heavy metals. The content of magnetite and other magnetic minerals in urban soils is tens and hundreds of times higher than their background values. The properties of techno-genic magnetics are also different: whereas background soils are dominated by thin superparamagnetic and single-domain particles, large multidomain particles prevail in urban soils. Technogenicmagnetics consist of micron-sized spherules. It has been proven that there is a correlation between magnetic susceptibility and the total content of heavy metals in soil. However, each city (or its district) has its own level, either positive or negative, which is determined by the nature of local contamination. Magnetic susceptibility maps have been created even for some countries (Poland, United Kingdom, etc.). Local surveys of urban areas, for example of a city or its vicinity, is of the greatest practical interest. Such maps reflect detailed contamination by heavy metals. Critical values of magnetic susceptibility above which soil is considered contaminated, differ between countries.
机译：由于磁铁矿和重金属对土壤的空气污染，研究人员对磁化率的评估特别感兴趣。城市土壤中磁铁矿和其他磁性矿物的含量比其背景值高数十倍至数百倍。技术磁性材料的特性也有所不同：背景土壤被超顺磁性薄层和单畴颗粒所占主导，而大的多畴颗粒在城市土壤中占主导地位。技术电磁学由微米级的小球组成。已经证明，磁化率与土壤中重金属的总含量之间存在相关性。但是，每个城市（或其地区）都有自己的水平，可以是正面的也可以是负面的，这取决于当地污染的性质。甚至为某些国家（波兰，英国等）创建了磁化率图。对城市区域（例如城市或其附近地区）的本地调查具有最大的实际意义。这些地图反映了重金属的详细污染。在不同国家，磁化率的临界值（土壤被视为受污染的临界值）不同。

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