engleski

Five Years Continuous Measurement Of PM2.5 Particle Fraction And Acidic Anions In Zagreb Air, Croatia

Daily PM2.5 samples were taken continuously for five years (2005 - 2009) in the northern residential part of Zagreb, with moderate to high traffic density. The samples were analysed for mass and content of water soluble ions, chlorides, nitrates, and sulphates. The present paper focuses on relation to mass concentrations, relative contribution of measured species to PM2.5 mass and the prediction of the relative importance of pollutant sources. The most abundant contributing species to the PM2.5 mass were sulphates followed by nitrates, and then by chlorides. The mass ratio of (NO3-)/(SO42-) as an indicator of the relative importance of pollutant sources shows that the mobile source emission was important contributor to particle mass.

air pollution; chlorides; nitrates; sulphates; ion chromatography

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