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Mass concentration and chemical composition of submicron particulate matter (PM1) in the Polish urban areas

2019; IOP Publishing; Volume: 214; Issue: 1 Linguagem: Inglês

10.1088/1755-1315/214/1/012092

1755-1307

Wioletta Rogula‐Kozłowska, Grzegorz Majewski, Patrycja Rogula-Kopiec, Barbara Mathews,

Air Quality Monitoring and Forecasting

Abstract Samples of PM 1 were collected at two urban background sites, one in Zabrze and one in Warsaw (Poland), in summer (24 June - 22 August 2014) and winter (8 January - 8 March 2015) in parallel. At each site, in each season, 60 diurnal (24-h) samples were taken. The samples were analyzed for carbon (organic OC, and elemental, EC) and water soluble ions (Na + , NH 4 + , Cl − , SO 4 2− , NO 3 − ) by using, respectively, a Sunset Laboratory carbon analyzer and a Herisau Metrohm AG ion chromatograph. Each 24-h sample of PM 1 was checked for mass closure using the categorization of the chemical components into: primary (POM) and secondary (SOM) organic matter, secondary inorganic matter (SIM), elemental carbon (EC), and sodium and chlorine (Na_Cl). The seasonal effects, typical of urban areas in Poland, are clearly seen in the whole series of the 24-hour PM 1 concentrations. Most of the PM 1 components and PM 1 had their mean concentrations higher in winter than in summer. Secondary aerosol (SOM+SIM) accounts for approx. 55% of the PM 1 mass in Warsaw and 40% in Zabrze.