Poaceae pollen in the atmosphere of Zagreb (Croatia), 2002-2005 (CROSBI ID 124486)
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Podaci o odgovornosti
Peternel, Renata ; Srnec, Lidija ; Čulig, Josip ; Hrga, Ivana ; Hercog, Predrag
engleski
Poaceae pollen in the atmosphere of Zagreb (Croatia), 2002-2005
Pollen of grasses (Poaceae) is one of the most important airborne allergen sources worldwide. The aim of the study was to determine diurnal, day-to- day, weekly, monthly and annual pollen variation, and the effect of some meteorological parameters on atmospheric pollen concentrations in Zagreb. A preliminary study was carried out during four seasons (2002-2005), using a 7-day VPPS 2000 Hirst volumetric pollen trap. Total annual grass pollen concentrations in Zagreb were rather constant (2, 673-3, 074 p.g.m-3), with a relative drop in 2004 (1, 196 p.g.m-3).The begining of the grass pollen season is usualy observed when the average daily temperature exceeds 13.5°C (max. daily temp. 19.5°C), without precipitation. In all four study years the absolute peak of concentrations occurs in the second half of May. The lenght of pollen season during the study period was 157-173 days.A high variability was observed in the maximal concentration and in the number of days when grass pollen concentration exceeded the treshold value of 30 p.g.m-3 (9-40 days). The highest diurnal concentrations were measured between 10.00 and 12.00 a.m. Statistically significant correlations were found between airborne grass pollen concentrations and air temperature, amount of precipitation and relative humidity.
aerobiology; Poaceae; pollen concentrations; grass pollen season
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