Occurrence of polycyclic aromatic hydrocarbons (PAHs) in air and soil surrounding a coal-fired thermal power plant in the south-west coast of India

Minal Milind Gune, Wan Li Ma, Srimurali Sampath, Wenlong Li, Yi Fan Li, Harikripa Narayana Udayashankar, Keshava Balakrishna, Zifeng Zhang

Research output: Contribution to journalArticle

Abstract

This investigation focused on the potential sources of polycyclic aromatic hydrocarbons (PAHs) in different matrices and their temporal variations surrounding a coal-fired thermal power plant in India. Samples were collected in different seasons for 1 year. Gas chromatography-mass spectroscopy (GC-MS) was used to perform the measurement of 16 priority PAHs. Average PAH concentrations were ranged from 0.71 to 2.99 ng/m3 in air and 1.59–22.7 ng/g in soil respectively. High levels of PAHs were found in soil compared to air, which indicated deposition in soil. This could be because of the fallout of high-molecular-weight compounds. During the monsoons, PAH concentrations in the air were the lowest compared to the other seasons because of the dilution effect. Phenanthrene, fluoranthene, and pyrenes were dominant in the air, contributing up to 32.5%, 22.7%, and 19.2% of total PAHs, respectively. On the other hand, soils contained fluoranthene (12.3%), pyrene (10.7%), benzo[b]fluoranthene (10%), chrysene (9.82%), and indeno[123-c,d]pyrene (9.64%) compounds. The occurrence of indeno[1,2,3-cd]pyrene (9.14 ng/g) indicated that the soil is contaminated from fly ash and diesel emissions from the thermal power plant and vehicular emission. The diagnostic ratios, thematic maps, and principal component analysis revealed that the fly ash, diesel emissions from the thermal power plant, vehicles, and biomass burning were the probable sources of PAHs in the study area. The human health risk assessment studies reveal that the soil samples are more prone to carcinogenicity than air samples. As per our knowledge, this is the first report on the impact of PAHs on air and soil in this region.

Original languageEnglish
JournalEnvironmental Science and Pollution Research
DOIs
Publication statusPublished - 01-01-2019

Fingerprint

Power Plants
Coal
Polycyclic Aromatic Hydrocarbons
Polycyclic aromatic hydrocarbons
Coastal zones
India
Power plants
PAH
Soil
Hot Temperature
Air
coal
Soils
coast
Pyrene
air
pyrene
fluoranthene
soil
Coal Ash

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Gune, Minal Milind ; Ma, Wan Li ; Sampath, Srimurali ; Li, Wenlong ; Li, Yi Fan ; Udayashankar, Harikripa Narayana ; Balakrishna, Keshava ; Zhang, Zifeng. / Occurrence of polycyclic aromatic hydrocarbons (PAHs) in air and soil surrounding a coal-fired thermal power plant in the south-west coast of India. In: Environmental Science and Pollution Research. 2019.
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abstract = "This investigation focused on the potential sources of polycyclic aromatic hydrocarbons (PAHs) in different matrices and their temporal variations surrounding a coal-fired thermal power plant in India. Samples were collected in different seasons for 1 year. Gas chromatography-mass spectroscopy (GC-MS) was used to perform the measurement of 16 priority PAHs. Average PAH concentrations were ranged from 0.71 to 2.99 ng/m3 in air and 1.59–22.7 ng/g in soil respectively. High levels of PAHs were found in soil compared to air, which indicated deposition in soil. This could be because of the fallout of high-molecular-weight compounds. During the monsoons, PAH concentrations in the air were the lowest compared to the other seasons because of the dilution effect. Phenanthrene, fluoranthene, and pyrenes were dominant in the air, contributing up to 32.5{\%}, 22.7{\%}, and 19.2{\%} of total PAHs, respectively. On the other hand, soils contained fluoranthene (12.3{\%}), pyrene (10.7{\%}), benzo[b]fluoranthene (10{\%}), chrysene (9.82{\%}), and indeno[123-c,d]pyrene (9.64{\%}) compounds. The occurrence of indeno[1,2,3-cd]pyrene (9.14 ng/g) indicated that the soil is contaminated from fly ash and diesel emissions from the thermal power plant and vehicular emission. The diagnostic ratios, thematic maps, and principal component analysis revealed that the fly ash, diesel emissions from the thermal power plant, vehicles, and biomass burning were the probable sources of PAHs in the study area. The human health risk assessment studies reveal that the soil samples are more prone to carcinogenicity than air samples. As per our knowledge, this is the first report on the impact of PAHs on air and soil in this region.",
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Occurrence of polycyclic aromatic hydrocarbons (PAHs) in air and soil surrounding a coal-fired thermal power plant in the south-west coast of India. / Gune, Minal Milind; Ma, Wan Li; Sampath, Srimurali; Li, Wenlong; Li, Yi Fan; Udayashankar, Harikripa Narayana; Balakrishna, Keshava; Zhang, Zifeng.

In: Environmental Science and Pollution Research, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Gune, Minal Milind

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