Benzopyrene Isomer Ratio in Organic Fraction of Aerosols Over Water Surface of Lake Baikal

Горшков, А. Г.; Marinaite, Irina I.; Жамсуева, Г. С.; Zayakhanov, A. S.

doi:10.1016/s0021-8502(19)30264-2

Cited by 15 publications

(8 citation statements)

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“…In the Baikal aerosol, PAHs are trace components in the aerosol composition, and their content does not exceed 0.05%. Above the Baikal water surface, the ΣPAH concentrations range from 0.10 to 0.61 ng/m 3 ; in the atmosphere of the cities and settlements on the coast of the lake, it is up to 1.7 ng/m 3 [37,38]. Regional transport of polluted air masses from the industrial zone of the Baikal region is considered one of the sources of anthropogenic POPs entering the water area of the southern basin of Lake Baikal.…”

Section: Introductionmentioning

confidence: 99%

Wildfires as a Source of PAHs in Surface Waters of Background Areas (Lake Baikal, Russia)

Горшков

Izosimova

Kustova

et al. 2021

Water

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Polycyclic aromatic hydrocarbons (PAHs) were detected in different types of PAH-containing samples collected in Lake Baikal during wildfires in the adjacent areas. The set of studied samples included the following: (i) water from the upper layer (5 m); (ii) water from the surface microlayer; (iii) water from the lake tributaries; (iv) water from deep layers (400 m); and (v) aerosol from the near-water layer. Ten PAHs were detected in the water samples: naphthalene, 1-methylnaphthalene, 2-methylnaphthalene acenaphthylene, acenaphthene, fluorene, phenanthrene, fluoranthene, pyrene, and chrysene. The total PAH concentrations (ƩPAHs) were detected in a wide range from 9.3 to 160 ng/L, characterizing by seasonal, intersessional, and spatial variability. In September 2016, the ƩPAH concentration in the southern basin of the lake reached 610 ng/L in the upper water layer due to an increase in fluorene, phenanthrene, fluoranthene, and pyrene in the composition of the PAHs. In June 2019, ƩPAHs in the water from the northern basin of the lake reached 290 ng/L, with the naphthalene and phenanthrene concentrations up to 170 ng/L and 92 ng/L, respectively. The calculation of back trajectories of the atmospheric transport near Lake Baikal, satellite images, and ƩPAH concentrations in the surface water microlayer of 150 to 960 ng/L confirm the impact of wildfires on Lake Baikal, with which the seasonal increase in the ƩPAH concentrations was associated in 2016 and 2019. The toxicity of PAHs detected in the water of the lake in extreme situations was characterized by the total value of the toxic equivalent for PAHs ranging from 0.17 to 0.22 ng/L, and a possible ecological risk of the impact on biota was assessed as moderate.

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Section: Introductionmentioning

confidence: 99%

Wildfires as a Source of PAHs in Surface Waters of Background Areas (Lake Baikal, Russia)

Горшков

Izosimova

Kustova

et al. 2021

Water

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“…The reliability of the obtained results on the concentrations of nutrients was verified by the regular quality control of the analyses within the framework of the EANET international program on the "surface waters" standard samples testing. The concentrations of polycyclic aromatic hydrocarbons (PAH) were measured using chromatography mass spectrometry (Gorshkov et al, 2004). Quantification of individual PAHs (phenanthrene-d10, chrysene-d12 and perylene-l12) was done using "Supelco" standards (USA).…”

Section: Methodsmentioning

confidence: 99%

Chemical composition and quality of water of the Selenga River and its tributaries in Mongolia

Сороковикова

Томберг

Stepanova

et al. 2019

LFWB

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The chemical composition and current state of water quality of the Selenga River and its tributaries in Mongolia are considered in this article based on the hydrochemical studies carried out in July 2013-2014. The observed changes in the chemical composition of the water resulted from natural and anthropogenic factors are analyzed. It is shown that water quality of the Selenga River and its tributaries worsened because of the entering of polluting components from the catchment area of Ulaanbaatar city and its wastewater. No influence of the wastewater from the Erdenet Ore-Dressing Plant (EODP) on the trace elements content in the water of the Orkhon and Selenga Rivers is revealed.

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“…DRs show the ratios of individual PAHs or PAH groups, e.g., A/(A + B) or A/B, where A and B are the concentrations of two different PAHs. DRs were used in this study to identify PAH sources according to [4][5][6][7][8][17][18][19] (Table 2). BeP/BeP + BaP <0.5 Close sources >0.5 Distant sources [4][5][6][7][8] 0.4-0.7 (0.62) 0.68-0.9 (0.74)…”

Section: Diagnostic Coefficientsmentioning

confidence: 99%

“…DRs were used in this study to identify PAH sources according to [4][5][6][7][8][17][18][19] (Table 2). BeP/BeP + BaP <0.5 Close sources >0.5 Distant sources [4][5][6][7][8] 0.4-0.7 (0.62) 0.68-0.9 (0.74)…”

Section: Diagnostic Coefficientsmentioning

confidence: 99%

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Polycyclic Aromatic Hydrocarbons in the Atmosphere of the Southern Baikal Region (Russia): Sources and Relationship with Meteorological Conditions

et al. 2022

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This article presents the results of the long-term studies at two stations located in the city of Irkutsk and the Listvyanka settlement of the southern Baikal region (East Siberia) concerning the concentration of polycyclic aromatic hydrocarbons (PAHs) in atmospheric aerosol. The studies revealed the seasonal and interannual dynamics in the distribution of PAHs in aerosols from urban (source) and rural (receptor) areas. We carried out a comprehensive analysis of weather conditions such as wind direction, relative humidity, air temperature, and atmospheric pressure. The analysis determined high correlations between air temperature, atmospheric pressure, temperature inversions, and PAHs at the monitoring stations. The average annual concentrations of PAHs in the abnormally warm 2020 were three times lower than the average values obtained in the cold 2016. The toxic equivalent concentrations (BaPeq) increased from summer to winter with an increase in the contribution from benzo(a)pyrene, one of the most toxic and hazardous compounds of this class of organic substances. Four-, five- and six-ring PAHs mainly predominated in aerosol; the proportion of two- and three-ring PAHs increased from the warm season to the cold season. Diagnostic ratios of PAHs identified the main sources of air pollution by this class of compounds: combustion of coal, liquid fuel and firewood, vehicle emissions, and wildfires. The percentage of the transport of anthropogenic aerosol containing PAHs from industrial sources of the Southern Baikal region towards Lake Baikal was 65 to 71%.

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Benzopyrene Isomer Ratio in Organic Fraction of Aerosols Over Water Surface of Lake Baikal

Cited by 15 publications

References 1 publication

Wildfires as a Source of PAHs in Surface Waters of Background Areas (Lake Baikal, Russia)

Wildfires as a Source of PAHs in Surface Waters of Background Areas (Lake Baikal, Russia)

Chemical composition and quality of water of the Selenga River and its tributaries in Mongolia

Polycyclic Aromatic Hydrocarbons in the Atmosphere of the Southern Baikal Region (Russia): Sources and Relationship with Meteorological Conditions

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