Cristin-resultat-ID: 1668045
Sist endret: 30. januar 2019, 12:28
NVI-rapporteringsår: 2018
Resultat
Vitenskapelig artikkel
2018

Spatial gradients of polycyclic aromatic hydrocarbons (PAHs) in air, atmospheric deposition, and surface water of the Ganges River basin

Bidragsytere:
  • Brij Mohan Sharma
  • Lisa Melymuk
  • Girija K Bharat
  • Petra Přibylová
  • Ondřej Sáňka
  • Jana Klánová
  • mfl.

Tidsskrift

Science of the Total Environment
ISSN 0048-9697
e-ISSN 1879-1026
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2018
Volum: 627
Sider: 1495 - 1504

Importkilder

Scopus-ID: 2-s2.0-85041535799

Beskrivelse Beskrivelse

Tittel

Spatial gradients of polycyclic aromatic hydrocarbons (PAHs) in air, atmospheric deposition, and surface water of the Ganges River basin

Sammendrag

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous semi-volatile organic pollutants. Their environmental occurrence is of global concern as some of them are carcinogens, mutagens, and teratogens. In this study, concentrations and distributions of 16 priority PAHs (∑PAHs) were measured in air, atmospheric deposition, and surface water at various locations in Himalayan, Middle, and Lower Reaches of the Ganges River, covering a spatial transect of 2500 km, during two seasons (pre-monsoon and monsoon). The concentration of ∑PAHs ranged between 2.2 and 182.2 ng m−3 in air, between 186 and 8810 ng m−2 day−1 in atmospheric deposition, and between 0.05 and 65.9 ng L−1 in surface water. Air concentrations were strongly correlated with human population density. In the Middle and Lower Reaches of the Ganges River, atmospheric PAHs were mainly attributed to fossil fuel combustion sources. In the Himalayan Reach the influence of forest fire or biomass combustion was evident during the dry pre-monsoon season. Seasonality in concentrations of PAHs in river water was evident in the Himalayan Reach of the river, as a probable consequence of climate-modulated secondary source intensity (i.e. releases from glacier melting). Seasonality faded in the Middle and Lower Reaches of the Ganges where water contamination is expected to mainly reflect anthropogenic primary sources. Ambient air concentrations were used to calculate the probabilistic incremental lifetime cancer risk (ILCR). It was expectedly found to be higher in the Middle and Lower Reaches compared to the Himalayan Reach. The strong correlation between population density and air concentrations suggests population density may be used as a surrogate variable to assess human health risk in data-sparse regions such as the Ganges River basin.

Bidragsytere

Brij Mohan Sharma

  • Tilknyttet:
    Forfatter
    ved Masarykova univerzita

Lisa Melymuk

  • Tilknyttet:
    Forfatter
    ved Masarykova univerzita

Girija K. Bharat

Bidragsyterens navn vises på dette resultatet som Girija K Bharat
  • Tilknyttet:
    Forfatter
    ved The Energy and Resources Institute

Petra Přibylová

  • Tilknyttet:
    Forfatter
    ved Masarykova univerzita

Ondřej Sáňka

  • Tilknyttet:
    Forfatter
    ved Masarykova univerzita
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