Preliminary Study of shiraz airborne precipitated nanoclusters
Paper ID : 1399-ICNS
Maral Fahandezh, Mehdi Pakmehr *
Department of Physics, Shiraz University
Airborne Particulates in nanocluster from known to be as a kind of air pollutant Based on different air pollution standards. Problems caused by such particulates at western and south-western parts of the Persian plateau’s atmosphere, especially within urban regions make us investigate physically such nanoclusters as prototype. In spite of their small size (with mean diameter of 550 nm) such particulates would precipitate at lower altitude of atmosphere mainly due to their heavier mass in comparison to other invisible components of air (N2 and O2 gas molecules) at normal weather condition. Such airborne precipitated nanoclusters could be analysed as a main component of air pollution during highly polluted days with a good approximation. This manuscript reports preliminary physical analysis of such nanoclusters including their average density and size distribution as well as their chemical composition for each sample prototype collected during highly polluted periods. We measured some physical parameters of the collected sample prototypes including their diameter size as being nanoclusters in conjunction with implementing structural analysis to define different phases included in each sample prototype. This case study of nanoclusters help us to roughly define the origin of air pollutant particulates within Shiraz urban region during severe pollution case.
airborne particulates, nanoclusters, PXRD, air pollution.
Status : Abstract Accepted (Poster Presentation)