الفهرس 
Chapter I : IntroductionOnly 14 pages are availabe for public view
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Abstract
In this study, Berner Impactor and high volume samplers as collection sampler. Measurements for determining the mass size distribution of aerosol particles and mass concentrations. An elemental characterization was achieved, it can be state that:
Average size distributions at industrial area, El-sharyna, Etsa and Maghagh were found as Bi-modal log normal. The mean value of MMADA is 407.65 nm and GSDA 2.38. Mean GSDC 1.47 and its MMADc of 3649.6 nm. Mean mass concentration is 292±17 µg/m3. Mass size distribution of all elements (Pb, Mn, Fe, Cu, K, Ca, Ba) was a bi-modal log normal size distribution expect lead element in Etsa, it was found as unimodal .Average mass size distributions in indoor were found as Bi-modal ,The MMADA mean value 220.3 nm. The mean value of MMADc 3627.6 nm. The mean GSDA is 1. while GSDc mean value 1.46. The mean mass concentration of indoor aerosols was (315.52±17 µg/m3).