Mercury and iron in atmospheric precipitation of the Azov Sea basin

Fedorov, Yu. A.; Rostov-on-Don,; Mikhailenko, Anna V.; Dmitrik, Leonid; Dotsenko, Irina; Solodko, Daria; Chepurnaya, Victoria I.

doi:10.31951/2658-3518-2020-a-4-838

Cited by 3 publications

(6 citation statements)

References 3 publications

(5 reference statements)

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“…To approximate this influx, the atmospheric Hg concentration in the HERMES model was increased to 6.0 ng/m 3 . Further, Fedorov et al stated that 28% of the total Hg (tHg) influx reached the SoA via precipitation [ 46 ]. Considering this, the total annual input into the SoA would comprise 13,271.1 kg/yr.…”

Section: Resultsmentioning

confidence: 99%

“…Considering this, the total annual input into the SoA would comprise 13,271.1 kg/yr. Taking the riverine inflow of 9059.7 kg/yr, calculated from the inflow of the Don and Kuban Rivers, into account, Fedorov et al underestimated the total influx by only 495.5 kg/yr [ 46 ]. Given the large variability in environmental parameters and the uncertainty associated with the reported data, this mass was considered negligible.…”

Section: Resultsmentioning

confidence: 99%

“…Mercury concentrations in the Black Sea average 9.5 ng/L in surface offshore waters [ 31 ]. Finally, Hg concentrations in rainwater over the SoA average 240 ng/L [ 46 ]. The abovementioned data were used to populate the HERMES model to construct a mass balance of Hg for the SoA.…”

Section: Methodsmentioning

confidence: 99%

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Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Gade,

von Hellfeld,

Mbadugha

et al. 2024

Toxics

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The Sea of Azov, an inland shelf sea bounding Ukraine and Russia, experiences the effects of ongoing and legacy pollution. One of the main contaminants of concern is the heavy metal mercury (Hg), which is emitted from the regional coal industry, former Hg refineries, and the historic use of mercury-containing pesticides. The aquatic biome acts both as a major sink and source in this cycle, thus meriting an examination of its environmental fate. This study collated existing Hg data for the SoA and the adjacent region to estimate current Hg influxes and cycling in the ecosystem. The mercury-specific model “Hg Environmental Ratios Multimedia Ecosystem Sources” (HERMES), originally developed for Canadian freshwater lakes, was used to estimate anthropogenic emissions to the sea and regional atmospheric Hg concentrations. The computed water and sediment concentrations (6.8 ng/L and 55.7 ng/g dw, respectively) approximate the reported literature values. The ongoing military conflict will increase environmental pollution in the region, thus further intensifying the existing (legacy) anthropogenic pressures. The results of this study provide a first insight into the environmental Hg cycle of the Sea of Azov ecosystem and underline the need for further emission control and remediation efforts to safeguard environmental quality.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Gade,

von Hellfeld,

Mbadugha

et al. 2024

Toxics

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“…In the contents not exceeding the MPC (the maximum permissible concentration), they do not pose a threat to the existence of biota. If this threshold value is exceeded, the HM`s can have toxic and mutagenic effects on aquatic and terrestrial landscapes components [2]. Atmospheric precipitation is an important source of heavy metals entering the aquatic and terrestrial ecosystems in the Azov Sea basin.…”

Section: Introductionmentioning

confidence: 99%

“…As a rule, scientists who study the troposphere pollution of urbanized areas are guided by the HM concentrations in the precipitation of background areas. The first large-scale studies of the HM content in atmospheric precipitation, including mercury, were first presented in [2,3,4]. They revealed a high degree of the HM contamination of hydrometeorological equipment in Rostov-on-Don and the satellite cities.…”

Section: Introductionmentioning

confidence: 99%

Physical and chemical properties, elemental and material snow composition in Rostov-on-Don

et al. 2021

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To study the current distribution of the heavy metals (HM) levels and iron in the atmospheric precipitation in Rostov-on-Don, an expedition was conducted aimed at simultaneous river water and snow sampling in the Don River, the roadside and park areas. The pH values of the melt-water were characterized by a slightly acidic reaction, and the stale snow in the park had lower values in comparison with the fresh snow. The river water was slightly alkaline, and the concentrations of dissolved migration forms of Pb, Cd, Zn, Ni, Cr, Mn, and Fe did not exceed the MPC. The exception was the Cu content, which exceeded the MPC by 2.4 times. The contents of the dissolved migration forms of Pb, Cd, Zn, Cu, Ni, and Fe in snow exceeded their contents in river waters. The HM and Fe percentage in suspended form in river water and different snow states is calculated and the sequence series are constructed. The analysis showed that in melt-water, in comparison with river water, there is a higher percentage of the HM and iron in the solution. That may be due to the slightly acidic reaction of the snow water medium, which, as is known, promotes the HM and Fe mobilization from the suspension and their transition to the dissolved state. Using electron microscopy and X-ray phase analysis, the suspension composition in the snow of the park zone was studied, which is mainly represented by aggregates of clay minerals, quartz grains, water silicates, feldspars, and organic matter clumps.

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Mercury behaviour features in soils and bottom sediments of technogenic landscapes water bodies in the Rostov region

Mikhailenko,

Fedorov,

Kostenko

2024

E3S Web Conf.

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Mercury is one of the priority pollutants entering the Rostov region`s water bodies from numerous natural and anthropogenic sources. Analysis of heavy metal extraction in the world indicates a reduction in its use in production. Based on expedition and laboratory studies, the mercury concentrations levels in soils and bottom sediments were determined. The bottom sediments of the region belong to the low and medium range of impact, areas of high pollution are formed within residential areas and in coal-mining areas. Hg concentrations do not exceed MPC in soils.

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Mercury and iron in atmospheric precipitation of the Azov Sea basin

Cited by 3 publications

References 3 publications

Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Mercury Dynamics in the Sea of Azov: Insights from a Mass Balance Model

Physical and chemical properties, elemental and material snow composition in Rostov-on-Don

Mercury behaviour features in soils and bottom sediments of technogenic landscapes water bodies in the Rostov region

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