Seasonal variations of PM1-bound water concentration in urban areas inPoland

Özet

Ambient concentrations and seasonal variability of water bound to ambientfine particulate matter (PM1-boundwater) were investigated at two urban sites, the cities Zabrze and Warsaw (southern and central Poland, re-spectively), in summer and winter. The types and numbers of PM1sources differ extremely between the twocities in one season and between the two seasons in one city, therefore the chemical compositions of PM1differas well. Water and other main PM1components (ions of water soluble compounds, organic and elementalcarbon) were determined in the PM1samples and their amounts comparatively analyzed.The large effect of solid fuel (hard coal) burning for residential heating on chemical composition and con-centrations of PM1makes the concentrations of PM1-bound water and their seasonal changes greater in Zabrzethan in Warsaw, where PM1in winter comes mainly from natural gas burning and from road traffic.