Tropospheric aerosol ionic composition in the Eastern Mediterranean region

Tropospheric aerosol ionic composition in the Eastern Mediterranean region by Nikos Mihalopoulos, Euripides G. Stephanou, Maria Kanakidou, S. Pilitsidis, Philippe Bousquet.

Concentrations of the major soluble ions: sulfate (SO 4 = ), nitrate (NO 3 − chloride (Cl methanesulfonate (MSA), sodium (Na + ammonium (NH )), potassium (K calcium (Ca ++ ) and magnesium (Mg have been measured in 49 aerosol samples collected over a year period at coastal site island Crete Eastern Mediterranean. Significant correlations observed between nss-SO (nonsea salt sulfate) NH Cl – NO . The /SO equivalent ratio was 0.32. Comparison total concentrations anions cations shows clear deficit cations. Correlation cation suggests that H is probably missing cation. Taking into consideration MSA/nss-SO ratios, contribution biogenic sulfur Mediterranean evaluated 0.6 28.3%. variations ion are discussed conjointly with meteorological data 5-day back trajectories air masses. DOI: 10.1034/j.1600-0889.49.issue3.7.x

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