4.7 Article

The use of Pinus nigra as a biomonitor of pesticides and polycyclic aromatic hydrocarbons in Lebanon

Journal

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 28, Issue 8, Pages 10283-10291

Publisher

SPRINGER HEIDELBERG
DOI: 10.1007/s11356-020-11954-y

Keywords

Air pollution; Biomonitoring; Pinus nigra; Organic pollutants; QuEChERS; Chromatography; Mass spectrometry

Funding

  1. University of Strasbourg
  2. Lebanese University

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The study examined the levels of pesticides and polycyclic aromatic hydrocarbons in conifer samples from different regions in north Lebanon. Results showed varying levels of pollution, with some areas having significantly higher concentrations. Conifers are suggested to be efficient biomonitoring tools for contamination levels in the air.
Among the various species of vegetation, conifers play an important role as a biomonitor of air pollution. The current study presents the determination of pesticides and polycyclic aromatic hydrocarbons in 15 conifer samples collected in August 2018 (summer season) from different regions in north Lebanon (Tripoli, Koura, Bcharre, and Akkar). Pollutants were extracted based on QuEChERS-SPME followed by liquid and gas chromatography-tandem mass spectrometry. Results showed that the samples collected from Bcharre region had the lowest concentration in both pesticides and polycyclic aromatic hydrocarbons with a total concentration of 50 and 66 ng g(-1), while the samples collected from the regions widely known by their agriculture (Akkar, Tripoli, and Koura areas) were the most polluted with concentrations of 231 and 422 ng g(-1), 192 and 370 ng g(-1), and 127 and 98 ng g(-1) for pesticides and polycyclic aromatic hydrocarbons respectively. This study revealed that conifers are suggested to be efficient biomonitors of contamination levels in the air.

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