engleski

Mass concentrations of PM1 particle fraction in Zagreb air

Main purpose of this investigation was to provide samples for chemical analyses of particle content in accumulation mode, skipping that way the bias caused by coarse particle fraction. Daily samples of PM1 airborne particle fraction were collected in Zagreb at two measuring sites (city centre and urban background) during 3-years period 2009-2011. Concentrations measured show seasonal dependence and their distribution could be approximated to the lognormal distribution. Difference in PM1 concentration levels between two sampling sites show slightly elevated values measured at town centre compared to those measured at urban background site, although these differences are less pronounced than for PM10 and PM2.5 particle fractions.

air pollution; PM1 particle fraction; mass concentration ratios; Zagreb

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