城市群积雪中污染物积累的动态变化

IF 1.5 4区地球科学 Q3 ECOLOGY

Polar Science Pub Date : 2024-12-01 DOI:10.1016/j.polar.2024.101072

Aleksandr Yu Kozhevnikov , Nikita A. Shutskiy , Semen L. Shestakov , Alexey V. Malkov , Dmitriy E. Lahmanov

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引用次数: 0

摘要

积雪特性允许使用雪作为大气空气污染、降水和最终土壤污染的方便指标。微量元素和有机污染物极有可能作为沉积基质在积雪上积累。本研究分析了过滤和未过滤样品中金属（Ca、Mn、Fe、Zn、Sr、Pb和Ba）含量的动态变化，以及城市及附近地区每周雪样中多芳烃（18种碱性多环芳烃）含量的动态变化。将所得结果与季末逐层取样的雪（层厚为0.1 m）中相同污染物的含量进行对比。研究结果表明，为了估算大气污染，应在降水结束后立即进行采样，因为大部分重金属通过雪层迁移到土壤覆盖层中，并在季末丢失。有机污染物，如多环芳烃，也会消失。在整个季节对雪进行采样，可以确定释放到大气中的污染物的全球和当地来源。

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Dynamics of pollutants accumulation in the snow of an urban agglomeration

Snowpack properties allow using snow as a convenient indicator of atmospheric air pollution, precipitation, and eventually soil pollution. There is a high probability of trace elements and organic pollutants accumulation on the snow cover acting as the deposit matrix. In this study, we analyzed the dynamics of the content of metals (Ca, Mn, Fe, Zn, Sr, Pb and Ba) in filtered and unfiltered samples and the content of polyaromatic hydrocarbons (18 basic PAHs) in weekly snow sampling in the city and nearby. The obtained results were collated with the content of the same contaminants in the snow sampled layer by layer at the end of the season (layer thickness was 0.1 m). In result of the study, we concluded that the sampling should be carried out right after the precipitation for the purpose of atmospheric pollution estimation, because most of heavy metals migrate through the snow layers into soil cover and get lost by the end of the season. The organic pollutants, such as PAHs, are also lost. The sampling of snow during the whole season allows identifying the global and local sources of contaminants released into the atmosphere.

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来源期刊

Polar Science ECOLOGY-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

3.90

自引率

5.60%

发文量

期刊介绍： Polar Science is an international, peer-reviewed quarterly journal. It is dedicated to publishing original research articles for sciences relating to the polar regions of the Earth and other planets. Polar Science aims to cover 15 disciplines which are listed below; they cover most aspects of physical sciences, geosciences and life sciences, together with engineering and social sciences. Articles should attract the interest of broad polar science communities, and not be limited to the interests of those who work under specific research subjects. Polar Science also has an Open Archive whereby published articles are made freely available from ScienceDirect after an embargo period of 24 months from the date of publication. - Space and upper atmosphere physics - Atmospheric science/climatology - Glaciology - Oceanography/sea ice studies - Geology/petrology - Solid earth geophysics/seismology - Marine Earth science - Geomorphology/Cenozoic-Quaternary geology - Meteoritics - Terrestrial biology - Marine biology - Animal ecology - Environment - Polar Engineering - Humanities and social sciences.