Metals and metalloids pollution levels, partitioning, and sources in the environmental compartments of a small urban catchment in Moscow Megacity

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2024-12-17 DOI:10.1016/j.envpol.2024.125552

Nikolay S. Kasimov, Jessica Yu. Vasil’chuk, Maria A. Tereshina, Sergey R. Chalov, Oxana N. Erina, Natalia E. Kosheleva, Galina L. Shinkareva, Dmitrii I. Sokolov, Dmitrii V. Vlasov, Alexey V. Konoplev

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Abstract

This study examines the contamination levels and sources of 32 metals and metalloids (MMs) in environmental compartments (roadside soil, road dust, and river suspended sediments) of a small urbanized river catchment located in Moscow megacity. MMs partitioning between particle size fractions (PM₁₀₀₀, PM_1-10, and PM₁) was analyzed by ICP-MS and ICP-AES methods. The pollution level of particle size fractions with MMs decreases in the following series: road dust > suspended sediments > soils. Absolute principal component analysis with multiple linear regression (PCA/APCS-MLR) shows that in both relatively coarse (PM_1-10) and fine (PM₁) fractions, traffic emissions are the primary contributors to pollution, whereas natural sources are dominant providers of chemical elements in bulk samples (PM₁₀₀₀). The predominance of fractions with a diameter over 10 μm in all three studied compartments indicates that the mineral matrix of all compartments is formed predominantly by natural material. Across all compartments and their fractions, Sb, Cd, Zn, Mo, W, Sn, Cu, Pb, and Bi are consistently accumulated. PM₁ and PM_1-10 particles of road dust and suspended sediments also absorb Ni and Cr, suspended sediments retain Mn and As, and soils additionally accumulate As. Anthropogenic influence is more pronounced in PM₁ and PM_1-10 particles compared to bulk samples due to a large impact of industrial sources, traffic, construction activities, and waste storage. Polluted soils are an additional source of MMs to PM₁ and PM_1-10 of road dust and PM_1-10 of suspended sediments, and road dust acts as a source of MMs to PM_1-10 of soils.

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本研究考察了莫斯科特大城市一条小型城市化河流集水区环境分区（路边土壤、道路扬尘和河流悬浮沉积物）中 32 种金属和类金属（MMs）的污染水平和来源。采用 ICP-MS 和 ICP-AES 方法分析了颗粒大小组分（PM1000、PM1-10 和 PM1）之间的 MMs 分配情况。含有 MMs 的粒度馏分的污染程度按以下系列递减：道路扬尘；悬浮沉积物；土壤。绝对主成分分析与多元线性回归（PCA/APCS-MLR）表明，在相对较粗（PM1-10）和较细（PM1）的馏分中，交通排放是造成污染的主要因素，而自然来源则是大量样本（PM1000）中化学元素的主要提供者。在研究的所有三个分区中，直径超过 10 μm 的馏分占绝大多数，这表明所有分区的矿物基质主要由天然物质形成。在所有隔室及其馏分中，Sb、Cd、Zn、Mo、W、Sn、Cu、Pb 和 Bi 不断累积。道路尘埃和悬浮沉积物中的 PM1 和 PM1-10 颗粒也会吸收镍和铬，悬浮沉积物会保留锰和砷，而土壤则会积累砷。由于工业源、交通、建筑活动和废物储存的巨大影响，PM1 和 PM1-10 颗粒中的人为影响比大块样本更明显。污染土壤是道路扬尘 PM1 和 PM1-10 以及悬浮沉积物 PM1-10 中 MMs 的额外来源，而道路扬尘则是土壤 PM1-10 中 MMs 的来源。

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来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.