Functional and non functional particulate hydrocarbons in urban, rural and forest atmospheres of Northern Algeria
by Yacine Moussaoui; Catia Baldduci; Angelo Cecinato; Brahim Youcef Meklati
International Journal of Global Warming (IJGW), Vol. 10, No. 4, 2016

Abstract: Airborne particulates were collected daily during three year seasons by using medium-volume aspirating systems equipped with PM10 inertial impactors. The organic fraction was solvent extracted with soxhlet, fractioned and cleaned-up through column chromatography, then processed by gas chromatography combined with flame ionisation and mass spectrometry detectors. Chemical analyses allowed characterising a set of groups of compounds, namely n-alkanes, n-alkanoic acids, dicarboxylic acids, polycyclic aromatic hydrocarbons, nitrated polycyclic aromatic hydrocarbons, and highly-polar chemicals. Besides that, the potential sources of pollution were investigated by analysing the n-alkane carbon preference index and selected diagnostic ratios among PAH and NPAH concentrations. Total concentrations of n-alkanes varied widely over the study period (from 48 to 170 ng m⁻³); PAHs behaved similarly (2 ÷ 24 ng m⁻³). Caffeine and nicotine accounted together for ∼12% of all identified PM components in the Rouiba urban area during summers and this percentage raised up to ~65% in autumn 2007.

Online publication date: Fri, 14-Oct-2016

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