Abstract <p>This study presents the results of the identification and quantification of polycyclic aromatic hydrocarbons (PAHs) in atmospheric aerosol particles. Suspended particulate matter (PM<sub>2.5</sub>) was collected in Arkhangelsk, a major city in the Arctic zone, using glass fiber membrane filters with a pore size of 1.6 μm. PAHs were extracted from the particle surfaces by ultrasonic extraction in methanol. Gas chromatography coupled with high-resolution mass spectrometry (GC–HRMS) employing an Orbitrap analyzer enabled limits of detection for the target analytes ranging from 0.020 to 1.5 ng/m<sup>3</sup> (per 1.8 m<sup>3</sup> of air). Concentrations of individual PAHs varied from 1.2 to 4.0 ng/m<sup>3</sup>, with total concentrations of the 18 target PAHs being 17 and 32 ng/m<sup>3</sup> for samples 2 and 1, respectively. Diagnostic ratios of PAH isomers indicated that pyrogenic sources, including incomplete fuel combustion and biomass burning, were the dominant contributors. Non-targeted screening identified 31 compounds, including oxygenated derivatives of phenanthrene and anthracene, nitrogen-containing PAHs, and high-molecular-weight PAHs, such as benzo[j]fluoranthene, benzo[e]pyrene, and perylene. These environmentally significant pollutants were present in concentrations of approximately 1–2 ng/m<sup>3</sup>.</p>

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Search and Determination of Polycyclic Aromatic Hydrocarbons in Atmospheric Aerosols of the Arctic Urban Agglomeration by Gas Chromatography–High-Resolution Mass Spectrometry

  • I. S. Shavrina,
  • D. S. Kosyakov,
  • I. I. Pikovskoi

摘要

Abstract

This study presents the results of the identification and quantification of polycyclic aromatic hydrocarbons (PAHs) in atmospheric aerosol particles. Suspended particulate matter (PM2.5) was collected in Arkhangelsk, a major city in the Arctic zone, using glass fiber membrane filters with a pore size of 1.6 μm. PAHs were extracted from the particle surfaces by ultrasonic extraction in methanol. Gas chromatography coupled with high-resolution mass spectrometry (GC–HRMS) employing an Orbitrap analyzer enabled limits of detection for the target analytes ranging from 0.020 to 1.5 ng/m3 (per 1.8 m3 of air). Concentrations of individual PAHs varied from 1.2 to 4.0 ng/m3, with total concentrations of the 18 target PAHs being 17 and 32 ng/m3 for samples 2 and 1, respectively. Diagnostic ratios of PAH isomers indicated that pyrogenic sources, including incomplete fuel combustion and biomass burning, were the dominant contributors. Non-targeted screening identified 31 compounds, including oxygenated derivatives of phenanthrene and anthracene, nitrogen-containing PAHs, and high-molecular-weight PAHs, such as benzo[j]fluoranthene, benzo[e]pyrene, and perylene. These environmentally significant pollutants were present in concentrations of approximately 1–2 ng/m3.