Partitioning and solubilities of metals and metalloids in spring rains in Moscow megacity

Власов, Д.В.; Касимов, Н.С.; Еремина, И. Д.; Shinkareva, Galina; Чубарова, Н. Э.

doi:10.1016/j.apr.2020.09.012

Cited by 18 publications

(5 citation statements)

References 110 publications

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“…On the contrary, in the rainy season, without the continuing supplements of suspended materials or gaseous atmospheric pollutants, the ion concentrations of the late rain stage (prolonged and heavy rainfall event) decrease progressively and remain on a relatively low level (reflecting the in-cloud process, that is, rainwater presents a similar ion concentration to cloud-water) [5,60,61]. This decrease could also be associated with the dilution effect widely observed in rainwater research [41,[62][63][64][65] that has shown a decreased ion concentration with an increased rainfall amount. Moreover, the combined influence of synoptic easterly airflow that transports a cleaner marine air mass over a region is another potential reason for lower ion concentrations during monsoons [66].…”

Section: Temporal Variationsmentioning

confidence: 98%

Rainwater Chemistry Reveals Air Pollution in a Karst Forest: Temporal Variations, Source Apportionment, and Implications for the Forest

Zeng

Han

2020

Atmosphere

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Temporal rainwater chemistry was used to reveal air pollution in the Maolan National Karst Forest Park (MNKFP), which is representative of the typical karst forest region of southwest China (SW China). The rainwater ions’ sources, variations, trends, and potential environmental effects were investigated from 2007 to 2010 and from 2013 to 2014. Based on the analysis of the temporal ionic concentrations of rainwater in the MNKFP, significant variations of ions were observed, including in NH4+ (9.7~266.6 μeq L−1) and SO42− (14.5~1396.4 μeq L−1), which were mainly controlled by variations in the source and rainfall amount; a decreased trend of rainwater pH was also observed. Accordingly, NH4+, Ca2+, SO42−, and Cl− were regarded as the most dominant ions. Typical ionic ratios and positive matrix factorization (PMF) model-based source apportionment suggested that anthropogenic inputs (coal combustion, industrial, traffic, and agricultural emissions) contributed 51% of F−, 93% of NO3−, 62% of SO42−, and 87% of NH4+, while the natural sources (crustal dust and sea salt) were the main sources of Cl− (74%), Na+ (82%), K+ (79%), Mg2+ (94%), and Ca2+ (93%). In combination with the reducing neutralization trend of temporal rainwater observed in the MNKFP and the potential effect of rainwater ion deposition on karst forests, more detailed monitoring of the rainfall-related deposition process is required for a better understanding of its potential environmental effects on the Earth’s surface.

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Section: Temporal Variationsmentioning

confidence: 98%

Rainwater Chemistry Reveals Air Pollution in a Karst Forest: Temporal Variations, Source Apportionment, and Implications for the Forest

Zeng

Han

2020

Atmosphere

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“…Thus, the pollution index (PI) [74] requires data on pre-industrial HM levels only known for a limited set of chemical elements. It also does not consider contamination with hazardous pollutants such as Sb, Mo, W, Sn, Ag, Bi, and others, which, for instance, are highly accumulated in road dust, soils, bottom sediments, suspended particles in snow, and rains in the largest megacity of Europe-Moscow [75][76][77][78].…”

Section: Assessment Of Solid Components Of the Environment Pollution With Hms' Chemical Fractionsmentioning

confidence: 99%

Integrated Assessment of Affinity to Chemical Fractions and Environmental Pollution with Heavy Metals: A New Approach Based on Sequential Extraction Results

Vodyanitskii

Власов

2021

IJERPH

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To assess the affinity degree of heavy metals (HMs) to geochemical phases, many indices with several limitations are used. Thus, this study aims to develop a new complex index for assessing contamination level and affinity to chemical fractions in various solid environmental media. For this, a new integrated approach using the chemical affinity index (CAF) is proposed. Comparison of CAF with %F on the literature examples on fractionation of HMs from soils, bottom sediments, atmospheric PM10, and various particle size fractions of road dust proved a less significant role of the residual HMs fraction and a greater contribution of the rest of the chemical fractions in the pollution of all studied environments. This fact is due to the normalization relative to the global geochemical reference standard, calculations of contribution of an individual element to the total pollution by all studied HMs, and contribution of the particular chemical fraction to the total HMs content taken into account in CAF. The CAF index also shows a more significant role in pollution and chemical affinity of mobile and potentially mobile forms of HMs. The strong point of CAF is the stability of the obtained HM series according to the degree of chemical affinity and contamination. Future empirical studies are necessary for the more precise assessment of CAF taking into account the spatial distribution of HMs content, geographic conditions, geochemical factors, the intensity of anthropogenic impact, environmental parameters (temperature, humidity, precipitation, pH value, the content of organic matter, electrical conductivity, particle size distribution, etc.). The combined use of CAF along with other indices allows a more detailed assessment of the strength of HMs binding to chemical phases, which is crucial for understanding the HMs’ fate in the environment.

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“…In particular, urban regions are suspected to changes of the timing and magnitude of rainfall events as a result of climate change. Both with proliferation of impervious surfaces, these areas are predicted to signi cantly alter the ooding experienced in many urban areas of the world (Faccini et As far as extreme rainfalls are associated with oods and increase in the amount of contaminants directly introduced into the rivers (Vlasov et al 2021b), many cities are developing mitigation and adaptation strategies to reduce their vulnerability (Maragno et al 2018). In this regard Moscow city remains an exceptional example as the biggest monocentric agglomeration in Europe which do not yet develop green infrastructure (GI) areas and speci cally low impact development measures.…”

Section: Introductionmentioning

confidence: 99%

Rainstorms impacts on water, sediment, and trace elements loads in an urbanized catchment within Moscow city: case study of summer 2020 and 2021

Chalov

Platonov

Erina

et al. 2022

Theor Appl Climatol

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In 2020 and 2021 the city of Moscow, Russia, has experienced two historical rainfall events that had caused major ooding of small rivers. Based on long-term observation datasets from the surrounding weather stations, regional mesoscale COSMO-CLM climate model results, and a detailed hydrological and water quality monitoring data collected in 2019-2021, we performed pioneer climate change and urbanization impact assessment on ooding hazard and water quality of case study urban Setun river. Statistically signi cant rise of moderate extremity indices and absence of signi cant trends for the most extreme indices was revealed for the 1966-2020 period. The combined impact of climate change and increased urbanization is highly non-linear and results in as much as a four-fold increase in extreme oods and shift of water regime features which lead to formation of speci c seasonal ow patterns. The rainstorm ood wave catchment response, involving in ltrated and hillslope-routed fraction of rainfall, is accounted as 6 to 11 hours, which it is more than twice as rapid as compared to the non-urbanized nearby catchments. Behaviour of four types of chemicals in the river water during rainstorms was identi ed, as well as main differences compared to the spring freshet period revealed. Based on the obtained results we conclude that lack of research focused on the combined impacts of climate change and urbanization on ooding and water quality in the Moscow urban area is a key problem in water management advances.

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Partitioning and solubilities of metals and metalloids in spring rains in Moscow megacity

Cited by 18 publications

References 110 publications

Rainwater Chemistry Reveals Air Pollution in a Karst Forest: Temporal Variations, Source Apportionment, and Implications for the Forest

Rainwater Chemistry Reveals Air Pollution in a Karst Forest: Temporal Variations, Source Apportionment, and Implications for the Forest

Integrated Assessment of Affinity to Chemical Fractions and Environmental Pollution with Heavy Metals: A New Approach Based on Sequential Extraction Results

Rainstorms impacts on water, sediment, and trace elements loads in an urbanized catchment within Moscow city: case study of summer 2020 and 2021

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